How to Lose 4 Stone and Belly Fat: A Realistic Long-Term Plan

• Four stone is 56 pounds, or roughly 196,000 calories, which is about a year at the deficit UK guidance recommends.
• What 4 stone means depends on your starting weight. It is 20 per cent of body weight at 20 stone and 25 per cent at 16 stone.
• Published trial figures show what proportion of people reached those percentages, and over how long.
• Treatment suitability depends on an individual clinical assessment with a UK registered prescriber.

Four stone is a big weight loss goal, so it is natural to wonder how long it might take. For some people, losing 4 stone could take around a year or longer. For others, it may take less or more time. Your starting weight, health, eating habits, activity levels and how your body responds can all affect your progress.

Four stone is equal to 56 pounds. Using the commonly used estimate of around 3,500 calories per pound, this works out at roughly 196,000 calories. A daily calorie deficit of 600 calories would add up to this amount in about 47 weeks. However, this is only a mathematical estimate. Weight loss does not happen at exactly the same rate every week, and a calorie deficit should not be treated as a personal prescription.

A longer plan can give you more time to build habits that fit into your everyday life. This could include eating balanced meals, being mindful of portion sizes, finding foods you enjoy and staying active in ways that feel manageable. Strength training and aerobic activity can also support muscle strength, fitness and overall health.

There is no need to rush. Losing weight very quickly can be difficult to maintain, and restrictive diets may make it harder to get enough nutrients or stick with your routine. A six month timeline may be possible for some people, but it is not a target that everyone needs to reach.

Your starting weight matters, too. Losing 4 stone from a weight of 20 stone is a 20% reduction in body weight. From 16 stone, it represents 25%. This shows why the same 4 stone goal can mean something very different from one person to another.

If you have a medical condition, take regular medication, are living with obesity or have concerns about changing your diet or activity levels, speak with a GP or another qualified healthcare professional. They can help you choose an approach that takes your health and individual needs into account.

Key things to know

• Four stone is equal to 56 pounds.
• Using the commonly used 3,500 calorie estimate, 4 stone represents around 196,000 calories.
• A daily calorie deficit of 600 calories would add up to this amount in approximately 47 weeks according to this calculation. However, this is a mathematical estimate, not a recommended calorie target for everyone.
• Losing 4 stone in six months would require a much larger estimated calorie deficit and may not be suitable for many people.
• Four stone represents a different percentage of body weight depending on your starting weight.
• You cannot choose exactly where your body loses fat from. Overall weight loss may reduce abdominal fat, but how much you lose from your stomach and how quickly this happens can vary.
• Weight regain can happen after weight loss. If you are using a weight management treatment, having a plan for maintaining your progress can be helpful from the beginning.

How long does it take to lose 4 stone?

So, is there a magic number of weeks for losing 4 stone? Not really. Everyone starts from a different place, and weight loss can change over time.

Using the commonly used 3,500 calorie estimate, a daily calorie deficit of 500 to 1,000 calories gives different theoretical timelines. These calculations are useful for understanding the maths, but they do not account for changes in energy needs, activity levels, fluid levels, body composition or individual health needs.

For some people, losing 4 stone may take around 9 to 12 months or longer. Others may need more time. The NHS advises aiming for a steady rate of around 1 to 2 pounds, or 0.5 to 1kg, a week, although individual progress can vary.

These are mathematical estimates only. They should not be used to decide how many calories you personally should eat. Your calorie needs depend on factors such as your age, height, weight, activity levels, health and nutritional needs.

The NHS provides general guidance on reducing calorie intake for weight loss, while current NICE guidance recommends a flexible, individualised approach that supports a nutritionally balanced diet and long term weight management.

Why about a year may be a realistic planning figure

A longer timeframe gives you room to adjust as your weight and routine change. Life does not always follow a perfect weight loss plan. You may have holidays, busy periods at work, illness, celebrations or weeks when exercise is harder to fit in.

Your weight can also move up and down because of changes in fluid levels, while your energy needs may change as your body weight decreases. This means you may not see the same amount of weight loss every week.

Instead of focusing only on a deadline, think about whether your plan gives you enough food and nutrients, keeps you active and fits around your everyday life. NICE recommends dietary approaches that are tailored to the individual and supported over the longer term.

How to lose 4 stone in 6 months

Could you lose 4 stone in six months? It may be possible for some people, but trying to force your weight down quickly is not suitable for everyone.

Losing 4 stone in six months would require an estimated daily deficit of around 1,077 calories for 26 weeks, based on the 3,500 calorie estimate. That is a large theoretical deficit and should not be treated as a recommended target.

The average daily reference intake is around 2,000 calories for women and 2,500 calories for men. These are general figures rather than personal calorie requirements, and your actual needs can be different.

Very low calorie diets also need particular care. Current NICE guidance says diets providing under 800 calories a day should only be considered in specific circumstances, as part of a specialist weight management service, with clinical support and supervision. They are not intended as a long term weight management strategy.

If you are thinking about a faster weight loss plan, speak with a GP or qualified healthcare professional first. They can help you understand what approach is appropriate for your health, rather than simply working towards a number on the scales.

How to lose 4 stone in a year

A year can give you more breathing room. Instead of trying to make dramatic changes overnight, you have time to build habits and adjust your routine as your weight changes.

Using the 3,500 calorie estimate, a daily deficit of around 537 calories would add up to approximately 196,000 calories over 365 days. Again, this is simply the maths behind the estimate. It does not mean that a 537 calorie deficit is the right target for everyone.

A flexible approach can also make it easier to manage birthdays, holidays, illness, work commitments and the occasional week when things do not go to plan. You do not need to be perfect every day to make progress.

How many calories to lose 4 stone?

If you have ever tried to calculate exactly how many calories you need to lose 4 stone, the maths can look surprisingly simple. Your body, however, is more complicated than a calculator.

Using the commonly used estimate of 3,500 calories per pound, losing 56 pounds represents around 196,000 calories.

You can divide this figure by the number of days in your planned timeframe to work out a theoretical daily calorie deficit. However, this should not be used as a prescription for how much you should eat. Your calorie needs are personal, and they can change as your weight, activity levels and circumstances change.

The arithmetic behind 4 stone

The commonly used estimate is around 3,500 calories per pound of body fat. Based on this calculation:

• 1 pound is around 3,500 calories.
• 4 stone is equal to 56 pounds.
• 56 pounds multiplied by 3,500 calories equals approximately 196,000 calories.

This is a simplified calculation. Weight loss is not simply a matter of subtracting calories from a fixed number. Your energy needs, body composition, activity levels and fluid balance can all affect what happens to your weight over time.

Why the last stone may take longer

You may notice that weight loss slows down as you get closer to your goal. One reason is that a lighter body generally needs less energy to maintain itself and to carry out everyday activities.

This does not mean you have failed or that you need to make drastic changes. Your plan may simply need reviewing as your weight changes.

If you are unsure about your calorie intake or are finding weight loss difficult, a GP, registered dietitian or another qualified healthcare professional can help you look at your diet, activity levels and wider health needs.

What 4 stone means depends on where you start

Four stone is always 56 pounds, but it does not represent the same amount of weight loss for everyone.

For example, losing 4 stone from 16 stone means losing 25% of your starting body weight. From 24 stone, the same 4 stone represents 16.7%.

Why the percentage matters

A target of 4 stone can sound straightforward, but the amount of change it represents depends on where you begin.

Clinical research often reports weight loss as a percentage of starting body weight because this makes it easier to compare results between people with different starting weights. However, research findings should not be used to predict exactly how much weight one person will lose.

Your starting weight, health, treatment plan, eating habits, activity levels and ability to maintain lifestyle changes can all affect your results.

Most importantly, there is no need to compare your progress with someone else's. A weight loss plan should take your own health and circumstances into account, and getting support from a healthcare professional can be useful if you are unsure where to start.

A diet plan to lose 4 stone

A strict diet with a fixed deadline can be hard to stick to. Instead, it may be more helpful to build eating habits that fit your everyday life. NICE recommends an individualised approach that supports a healthy, balanced diet while helping you reduce energy intake where appropriate.

You could start with a few simple changes:

1. Take a look at your usual eating habits before making major changes.
2. Include a source of protein with your meals, such as eggs, fish, beans, lentils, yoghurt, tofu or lean meat.
3. Include vegetables, fruit and other fibre rich foods as part of a balanced diet.
4. Keep suitable portions of carbohydrate foods such as potatoes, rice, oats, bread and pasta.
5. Pay attention to drinks that can add extra calories, including sugary drinks, sweetened coffees and alcohol.
6. Avoid extreme restriction or cutting out whole food groups unless a healthcare professional has advised you to do so.
7. Leave room for meals out, celebrations and changes in your routine. You do not have to eat perfectly to make progress.
8. Review your approach as your weight, appetite, activity levels and energy needs change.

Eating enough protein and doing resistance training may help support muscle during weight loss. However, neither can guarantee that all of the weight you lose will come from body fat.

How to lose 4 stone without exercise

What if exercise is not realistic for you right now? Weight loss can happen through changes to food intake, but physical activity is still useful for your general health, fitness, strength and mobility.

If exercise is difficult because of pain, mobility problems, tiredness or a medical condition, you do not have to jump straight into a demanding workout. Speak with a healthcare professional about what may be suitable for you. You may be able to start with gentle movement or short periods of activity and build up gradually.

When it is suitable for you, strength training can help develop and maintain muscle strength. Everyday movement, such as walking or taking the stairs, can also help you stay active. The best approach is one that fits your current health and abilities rather than one that feels impossible to maintain.

An exercise plan to lose 4 stone

Exercise does not have to be all about burning calories. Moving regularly can also support your fitness, strength, sleep, mood and general health.

You do not need to start with long or difficult workouts. If you are currently inactive, even small amounts of movement can be a useful starting point. The updated UK Chief Medical Officers' guidance states that any activity is better than none, with benefits increasing as activity levels increase.

What UK activity guidance recommends

For adults aged 19 to 64, UK Chief Medical Officers' guidance recommends aiming for:

• At least 150 minutes of moderate intensity activity each week, or 75 minutes of vigorous intensity activity.
• Strengthening activities on at least 2 days each week.
• Less time spent sitting or being inactive.
• Breaking up long periods of inactivity with movement where possible.

You can spread activity across the week and build up gradually if you are not used to exercising. Walking, cycling, swimming, dancing and similar activities can count, depending on their intensity.

If you are older, have a disability, have a long term health condition or are unsure which activities are suitable for you, you may need to adapt these recommendations. Speak with a healthcare professional if you need advice about exercising safely.

Weight loss injections and 4 stone

Could medication form part of your weight loss plan? Prescription weight management medicines may be offered to some people alongside a reduced calorie diet and increased physical activity when they meet the relevant criteria.

These medicines are not suitable for everyone, and results from clinical trials cannot tell you exactly how much weight you will lose. Your prescriber will consider factors such as your BMI, health, existing conditions, other medicines and the specific licence or treatment criteria.

You can learn more about available prescription weight loss treatments.

Can you lose 4 stone with Mounjaro?

Some people taking tirzepatide in clinical trials lost enough weight to reach or exceed 4 stone, depending on their starting weight. However, the results were not the same for everyone.

Mounjaro contains tirzepatide. In the SURMOUNT 1 trial, 2,539 adults with obesity, or overweight with at least one weight related health condition, received tirzepatide or placebo for 72 weeks alongside lifestyle changes. At the 15 mg dose, the average reduction in body weight was around 20.9%.

The trial also reported the following results at 72 weeks:

These figures describe what happened in the study group. They do not mean that everyone taking 15 mg of tirzepatide will lose 20% of their body weight.

For example, if you start at 20 stone, losing 4 stone would represent 20% of your starting weight. In the SURMOUNT 1 trial, 62.9% of participants taking 15 mg of tirzepatide reached at least 20% weight loss after 72 weeks. This is a study result, not a prediction of what will happen to an individual.

Your response may be different because your starting weight, health, treatment plan, dose, lifestyle and other circumstances may not be the same as those of the people in the trial. Mounjaro should only be used for weight management when it is appropriate for you and prescribed by an appropriately qualified healthcare professional.

How do the injectable and oral options compare?

Clinical trials have also looked at oral semaglutide as a potential weight management treatment. However, these studies involved different groups of people and were carried out under different conditions, so the results should not be treated as a direct comparison between medicines.

In SURMOUNT 1, the average weight reduction with tirzepatide 15 mg was around 20.9% at 72 weeks. In STEP 1, the average reduction with once weekly semaglutide 2.4 mg was 14.9% at 68 weeks. The OASIS 4 trial found an estimated average reduction of 13.6% with oral semaglutide 25 mg at 64 weeks.

These were separate clinical trials, with different participants, treatment conditions and study designs. Looking at the percentages side by side does not show which treatment would be right for an individual person.

You can read more about the oral option on our page covering weight loss tablets.

The six month review point

If you are taking tirzepatide for weight management, NICE recommends reviewing your response after 6 months on the highest tolerated dose. If you have lost less than 5% of your initial body weight, the prescriber should discuss the reasons with you and consider the benefits and risks before deciding whether to continue treatment. People with type 2 diabetes may take longer to lose weight.

This does not mean that everyone who loses less than 5% will automatically stop treatment. The decision should take your response, health, treatment benefits and possible risks into account.

Who are these medicines licensed for?

Eligibility depends on the medicine, its licence and the treatment setting. BMI is only one part of the assessment, so the figures below should not be used to decide whether a medicine is suitable for you.

NICE recommends lower BMI thresholds for some ethnic groups because weight related health risks can occur at a lower BMI. The relevant threshold can also depend on the medicine and treatment setting. Your prescriber will assess your individual circumstances rather than looking at BMI alone.

Losing 4 stone with a slow metabolism

Have you been told that you have a slow metabolism because your weight loss has slowed down? There can be several reasons why progress changes over time.

Your energy needs are affected by factors such as body size, body composition, age, activity levels and health. As you lose weight, your body generally needs less energy to maintain its new weight. This can make your calorie deficit smaller if your food intake and activity stay the same.

What may affect your progress

Several everyday factors can make weight loss harder to track, including:

• Changes in portion sizes.
• Drinks and other foods that add calories without being very filling.
• Lower activity levels.
• Changes in sleep or stress.
• Changes in your calorie needs as your weight decreases.
• Certain medical conditions or medicines.

If you are also experiencing ongoing tiredness, feeling unusually cold or other symptoms that concern you, speak with a healthcare professional. They can look at your symptoms and decide whether you need further assessment or testing.

Loose skin after losing 4 stone

Losing a significant amount of weight can leave some people with loose skin. How much loose skin you have can vary greatly from person to person.

Factors such as age, genetics, skin elasticity, the amount of weight lost and how long your skin has been stretched can all play a part.

What may make loose skin more likely?

• The total amount of weight lost.
• How long you have carried extra weight.
• Age and natural changes in skin elasticity.
• Genetics.
• Your body composition.
• How quickly your weight changes.

What may help and what does not?

Gradual weight loss, balanced nutrition and strength training can support your general health and muscle strength. However, they cannot guarantee that loose skin will tighten.

Be cautious of products that promise to remove or permanently tighten loose skin. Creams, supplements and weight management medicines should not be relied on to remove excess skin.

If loose skin causes discomfort, skin irritation or problems with movement, speak with a healthcare professional. They can discuss the options available based on your symptoms and circumstances.

Does it differ for women, men and people over 40?

There is no single weight loss plan that works in exactly the same way for everyone. Factors such as body composition, age, hormones, activity levels, health and medical history can all affect weight and energy needs.

This is why the same calorie target should not automatically be used for everyone. Your nutritional needs should be considered before making significant changes to your diet.

Losing 4 stone as a woman

The average daily reference intake for women is around 2,000 calories. This is a general population figure, not a personal calorie requirement.

Hormonal changes and fluid retention during the menstrual cycle can temporarily affect your weight. This can make it harder to judge progress from the scales alone.

A balanced approach should provide enough food, protein, fibre and other nutrients. If you are pregnant or breastfeeding, speak with a healthcare professional before trying to lose weight. The same applies if you have a medical condition or take regular medication.

Losing 4 stone as a man

The average daily reference intake for men is around 2,500 calories, but individual calorie needs can be higher or lower.

Men may be more likely to carry a larger proportion of body fat around the abdomen, but this does not mean that every man will lose belly fat first. Where your body loses fat and how quickly your waist measurement changes can vary.

Your starting weight, body composition, activity levels and eating habits can all affect your progress.

Losing 4 stone over 40

Does losing weight become impossible after 40? No, but your body and lifestyle may change with age.

Changes in muscle mass, activity levels and energy needs can affect how you manage your weight. Strength training, adequate protein and regular movement may help support muscle health as you get older.

You do not need to start with an intense exercise programme. Begin at a level that feels suitable for your fitness and health, and speak with a healthcare professional if you have concerns about exercising.

Keeping 4 stone off

Reaching your target weight is one stage. Keeping the weight off is another.

Thinking about maintenance from the beginning can help you prepare for changes in appetite, routine and energy needs. Weight regain can happen after weight loss, including after stopping some weight management medicines. This does not mean that you have failed. Weight management can be affected by biological, environmental and lifestyle factors.

What withdrawal research shows

Research has found that some people regain weight after stopping weight management medicines.

In the STEP 1 extension study, participants who stopped semaglutide after 68 weeks regained some of the weight they had lost during the following year. On average, they regained around two thirds of their previous weight loss. This was a study finding and does not mean that everyone will regain the same amount.

A separate SURMOUNT 4 trial looked at what happened when people who had taken tirzepatide for 36 weeks were switched to placebo. Those who continued tirzepatide maintained more of their weight loss, while those who switched to placebo regained weight during the following 52 weeks.

These findings show why stopping treatment can be an important part of the weight management discussion. If you are taking a prescription medicine, do not stop it without discussing your options with your prescriber.

Why maintenance needs a separate plan

Your calorie needs may be lower after weight loss than they were before. Maintaining your weight may involve adjusting your food intake, staying active and finding routines that you can continue over time.

Helpful habits may include:

• Staying active in ways you enjoy.
• Continuing strength training if it is suitable for you.
• Eating balanced meals with enough protein and fibre.
• Keeping an eye on changes in your weight without becoming overly focused on the scales.
• Asking for support if weight regain becomes difficult to manage.

Ongoing weight management support

You do not have to manage everything on your own. Regular support can give you an opportunity to review your progress, talk through challenges and check whether your treatment plan is still suitable.

If you are using prescription medication, your prescriber should review your response, side effects and ongoing suitability. NICE also recommends continued support to help people maintain weight loss if tirzepatide is stopped.

You can learn more about clinical support on our weight loss clinic page.

Medical Disclaimer

This article is for general information only and does not replace advice from a qualified healthcare professional. The calorie calculations, weight loss timelines and clinical trial results are included to help explain the topic. They should not be used as personal medical or dietary instructions.

Prescription medicines should only be used under the supervision of an appropriately qualified prescriber. Whether a treatment is suitable for you depends on factors such as your health, medical history, current medicines and clinical assessment.

Speak with a healthcare professional before making a significant change to your diet or exercise routine, particularly if you have a medical condition, take regular medication, are pregnant or breastfeeding, or have a history of disordered eating.