📋 Health Information · Editorial Team

How to Lose a Stone in 2 Weeks

The 2-week kickstart plan with honest numbers. A full stone in 14 days needs a 3,500 kcal daily deficit: here is what is actually achievable and exactly how to do it safely.

Realistic 2-week fat loss: 4-6 lb

Plus water weight: 2-4 lb

Daily calorie target: 1,200-1,800 kcal

Medical disclaimer: This article is general information, not medical advice. Rapid weight loss carries risks. Speak to your GP before starting, especially if you have diabetes, take medication, are pregnant, or have a history of disordered eating.

The Honest Maths: Why 14 Days Cannot Deliver 14 lb of Fat

A stone is 14 lb, roughly 49,000 kcal of stored body fat. Dividing by 14 days gives a required daily deficit of 3,500 kcal. For perspective, most adults burn 1,800 to 2,500 kcal per day in total. You would need to eat almost nothing while running a marathon daily.

The NHS safe rate is 1 to 2 lb per week. Even at an aggressive (but achievable) 1,000 kcal daily deficit, 14 days delivers about 4 lb of fat loss. Add 2 to 4 lb of water weight in week 1, and a superb 2 weeks totals 6 to 8 lb on the scale.

That is not failure. That is physiology. This plan maximises those 14 days honestly, without crash-diet dangers. For the longer journey, read how to lose a stone and how long it takes.

Week 1: The Reset (Days 1-7)

Target: 3 to 5 lb (mostly water + glycogen, plus 1 to 2 lb fat). Week 1 is about eliminating the easy wins and establishing systems.

Day 1-2: Clear the decks

Remove all liquid calories: fizzy drinks, juices, alcohol, milky coffees, smoothies. One pint of beer is 180 kcal; a large latte is 190 kcal. These add up silently. Switch to water, black coffee, and herbal tea. Start tracking every meal in a free app. Weigh yourself each morning.

Day 3-4: Protein anchor

Set protein at 1.6 to 2.2g per kg of body weight. For a 90 kg person, that is 145 to 200g daily. Protein preserves muscle, suppresses hunger, and burns 20-30% of its own calories in digestion. Every meal: palm-and-a-half of lean protein, two fists of vegetables, one fist of whole carbs.

Day 5-7: Movement baseline

Build to 10,000 daily steps. Walking burns 300-500 kcal without spiking hunger. Add your first full-body strength session: squats, push-ups, rows, lunges, 30 minutes. Sleep 7 to 9 hours; one bad night can add 300+ kcal of cravings the next day.

Understand water weight vs fat so week 1's big drop does not confuse you when week 2 slows.

Week 2: Accelerate (Days 8-14)

Target: 2 to 3 lb (predominantly fat). Week 2 is where real fat loss happens. Water weight is gone; now it is about sustained deficit.

Day 8-10: Tighten the deficit

Eat to 1,200-1,400 kcal (women) or 1,500-1,800 kcal (men). Audit week 1 tracking data: where did extra calories hide? Weekend meals, cooking oils, sauces, handfuls of snacks? Fix the single biggest leak. Add second strength session.

Day 11-12: NEAT maximisation

NEAT (non-exercise activity thermogenesis) is the secret weapon. Stand while on calls, take stairs, park further away, do 5-minute walking breaks hourly. NEAT can vary by 800 kcal/day between sedentary and active people, more than most workouts burn.

Day 13-14: Plan the transition

Decide now: continue the deficit toward your full goal, or shift to maintenance? Read maintaining weight loss and breaking plateaus to plan weeks 3+. Do not "go back to normal."

2-Week Meal Framework (No Crash Diet)

No competitor gives you this. A simple daily template at ~1,400 kcal:

Meal	Example	Approx kcal	Protein
Breakfast	Greek yoghurt (200g) + berries + 15g oats	300	25g
Lunch	Chicken breast (150g) + large salad + 1 tsp olive oil	400	45g
Snack	2 boiled eggs + carrot sticks	200	14g
Dinner	Salmon fillet (150g) + broccoli + 100g sweet potato	500	40g
Total	All of the above	~1,400	~124g

Rotate proteins (turkey, tuna, tofu, eggs) and vegetables for variety. Beware weight loss myths about "magic" foods.

Rapid-Loss Approaches Compared

Approach	Daily kcal	2-Week Loss	Safety
This plan (moderate deficit)	1,200-1,800	6-8 lb	✅ Safe
Fast 800 (VLCD)	800	8-10 lb	⚠️ Medical supervision needed
Scarsdale diet	~1,000	7-9 lb	❌ Experts warn against
NHS 12-week plan pace	1,400-1,900	2-4 lb	✅ Safest

Who Should NOT Do a 2-Week Kickstart

• Pregnant, breastfeeding, or trying to conceive
• Diabetes (especially on insulin or sulfonylureas)
• History of eating disorders
• Taking medication affecting blood sugar, blood pressure, or mood
• Heart, kidney, or liver conditions
• Under 18

If any apply, follow the NHS Better Health programme instead and discuss options with your GP.

Track Your 2 Weeks in Stone

Weigh daily at the same time, but judge by weekly averages. Expect daily fluctuations of 1-3 lb. Milestones:

• Day 7: down 3-5 lb (water + fat)
• Day 14: down 6-8 lb total

Use our weight loss tracker and weigh at the best time for consistency. See what losing a stone looks like for visual motivation.

Frequently Asked Questions

Can you lose a stone in 2 weeks?

A full stone (14 lb) of pure fat in 14 days requires a daily deficit of about 3,500 kcal, which is not achievable or safe for most people. A realistic 2-week result is 4 to 6 lb of fat loss plus 2 to 4 lb of water weight. Anyone promising a full stone of fat in 2 weeks is misleading you.

How many calories should I eat to lose weight in 2 weeks?

For a 2-week kickstart, most women should eat around 1,200 to 1,400 kcal per day and most men around 1,500 to 1,800 kcal. This creates a deficit of 750 to 1,000 kcal below maintenance. Never go below 1,200 kcal (women) or 1,500 kcal (men) without medical supervision.

What is the fastest safe way to lose weight in 2 weeks?

Cut all liquid calories, eat 1.6 to 2.2g of protein per kg of body weight daily, walk 10,000 steps, do 3 full-body strength sessions per week, sleep 7 to 9 hours, and track everything. This delivers 2 to 3 lb of fat loss per week plus initial water weight.

Why do I lose more weight in the first week?

Week 1 losses are mostly water and glycogen, not fat. Each gram of glycogen stores 3 grams of water. Cutting carbs and salt releases this quickly. Real fat loss is 1 to 2 lb per week. This is normal and expected, not a sign the diet stopped working in week 2.

Is 800 calories a day safe for 2 weeks?

Very low calorie diets (800 kcal/day) should only be done with medical supervision. Risks include gallstones, muscle loss, nutrient deficiency, and extreme hunger leading to bingeing. For most people, 1,200 to 1,800 kcal with high protein is safer and more sustainable.

What should I do after the 2 weeks?

Do not return to old habits. Either continue at a moderate deficit (500 kcal/day) toward your full goal over the coming weeks, or transition to maintenance calories while keeping the walking, protein, and tracking habits. The 2 weeks should be a kickstart, not a crash diet.

How much water weight will I lose in 2 weeks?

Most people lose 2 to 4 lb of water weight in the first week when cutting carbs and salt. This is real weight off the scale but not fat loss. From week 2, expect predominantly fat loss at 1 to 3 lb per week depending on your deficit.

Should I exercise every day for 2 weeks?

Daily walking (10,000 steps) is ideal. Add 3 full-body strength sessions per week to preserve muscle. Avoid intense daily cardio which spikes hunger and risks injury. Rest days with walking are more effective than burnout.