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Weight Loss Calculator in Stone and Pounds
Enter your starting weight to see your 5%, 10% and 15% weight loss targets in stone, pounds and kg. Add your current weight to track your progress.
- Stone, pounds or kg
- 5%, 10% and 15% targets
- Progress and goal tracker
Starting weight
Starting weight
Current weight (optional)
Current weight (optional)
Goal weight (optional)
Goal weight (optional)
Your weight loss targets
Add your current weight to see your progress. The ring fills at a 10% loss.
How to use the weight loss calculator
Use the weight you started at, in stone and pounds or kilograms.
The calculator shows what you'd weigh after losing 5%, 10% and 15%, and how much that is to lose.
Add your current weight to see how much you've lost so far, and a goal weight to see how long it might take.
Why 5% and 10%?
Many weight management programmes, including NHS services, use 5% and 10% of your starting weight as first targets. They're realistic steps that are easier to reach than one big goal, and you can set a new target each time you get there.
The NHS suggests losing weight gradually, at around 0.5 to 1 kg (1 to 2 lb) a week. When you add a goal weight, the calculator estimates how long it might take at that pace.
5% and 10% weight loss chart in stone
Target weights after a 5% and 10% loss, for starting weights from 9 to 25 stone.
| Starting weight | Target after 5% loss | Target after 10% loss |
|---|---|---|
| 9 st (57.2 kg) | 8 st 7.7 lb (54.3 kg) | 8 st 1.4 lb (51.4 kg) |
| 10 st (63.5 kg) | 9 st 7 lb (60.3 kg) | 9 st 0 lb (57.2 kg) |
| 11 st (69.9 kg) | 10 st 6.3 lb (66.4 kg) | 9 st 12.6 lb (62.9 kg) |
| 12 st (76.2 kg) | 11 st 5.6 lb (72.4 kg) | 10 st 11.2 lb (68.6 kg) |
| 13 st (82.6 kg) | 12 st 4.9 lb (78.4 kg) | 11 st 9.8 lb (74.3 kg) |
| 14 st (88.9 kg) | 13 st 4.2 lb (84.5 kg) | 12 st 8.4 lb (80.0 kg) |
| 15 st (95.3 kg) | 14 st 3.5 lb (90.5 kg) | 13 st 7 lb (85.7 kg) |
| 16 st (101.6 kg) | 15 st 2.8 lb (96.5 kg) | 14 st 5.6 lb (91.4 kg) |
| 17 st (108.0 kg) | 16 st 2.1 lb (102.6 kg) | 15 st 4.2 lb (97.2 kg) |
| 18 st (114.3 kg) | 17 st 1.4 lb (108.6 kg) | 16 st 2.8 lb (102.9 kg) |
| 19 st (120.7 kg) | 18 st 0.7 lb (114.6 kg) | 17 st 1.4 lb (108.6 kg) |
| 20 st (127.0 kg) | 19 st 0 lb (120.7 kg) | 18 st 0 lb (114.3 kg) |
| 21 st (133.4 kg) | 19 st 13.3 lb (126.7 kg) | 18 st 12.6 lb (120.0 kg) |
| 22 st (139.7 kg) | 20 st 12.6 lb (132.7 kg) | 19 st 11.2 lb (125.7 kg) |
| 23 st (146.1 kg) | 21 st 11.9 lb (138.8 kg) | 20 st 9.8 lb (131.5 kg) |
| 24 st (152.4 kg) | 22 st 11.2 lb (144.8 kg) | 21 st 8.4 lb (137.2 kg) |
| 25 st (158.8 kg) | 23 st 10.5 lb (150.8 kg) | 22 st 7 lb (142.9 kg) |
Frequently asked questions
How do I work out 5% weight loss?
Multiply your starting weight by 0.05 to find how much to lose, or by 0.95 to find your target weight. For 15 stone, 5% is 10.5 lb, so the target is 14 st 3.5 lb.
What is 10% weight loss for 14 stone?
10% of 14 stone is 1 st 5.6 lb. Your target would be 12 st 8.4 lb (80.0 kg).
What is 5% of 12 stone?
5% of 12 stone is 8.4 lb (3.8 kg), giving a target of 11 st 5.6 lb.
How do I calculate the percentage of weight I've lost?
Take your current weight away from your starting weight, divide by your starting weight, then multiply by 100. If you started at 15 st and now weigh 14 st, that's 1 ÷ 15 × 100 = 6.7%.
How long does it take to lose 5% of my weight?
It depends on your starting weight. The NHS suggests losing weight gradually, at around 0.5 to 1 kg (1 to 2 lb) a week. At that pace, losing 5% from 15 stone (10.5 lb) takes roughly 5 to 10 weeks. The calculator works this out for your goal.
Can I use kilograms instead of stone?
Yes. Tap the Kilograms tab and enter your weights in kg. Results are shown in both units.
This calculator is for adults and gives general information only. If you're under 18, pregnant, have a medical condition or have had an eating disorder, talk to your GP before trying to lose weight. You can also check your BMI with the NHS BMI calculator.