At a safe rate of 0.5–1 kg a week, losing 10 kg takes about 10 to 20 weeks (2½ to 5 months). That needs a total deficit of around 77,000 kcal – roughly 550 kcal a day for 20 weeks, or 1,100 kcal a day for 10 weeks. Most people take 4 to 6 months once plateaus are included.
Your 10 kg timeline
10 kg weight loss timeline
| Weekly rate | Daily deficit | Time to lose 10 kg |
|---|---|---|
| 0.25 kg (½ lb) | ≈ 275 kcal | 40 weeks (about 9 months) |
| 0.5 kg (1 lb) | ≈ 550 kcal | 20 weeks (about 4½ months) |
| 0.75 kg (1½ lb) | ≈ 825 kcal | 14 weeks (about 3 months) |
| 1 kg (2 lb) | ≈ 1,100 kcal | 10 weeks (about 2½ months) |
A realistic month-by-month picture
Month 1: −3 to −5 kg
Faster at first, partly water. Focus on new habits: meal planning, fewer sugary drinks, daily walks.
Month 2: −2 to −3 kg
Steady fat loss. Clothes start to feel looser. Add strength exercise twice a week.
Month 3: −2 to −3 kg
Expect a plateau of a week or two. Recalculate your calories – you now need fewer.
Months 4–5: final 1 to 3 kg
The last few kilograms are slowest. Keep going and plan for maintenance.
What 10 kg does for your health
For someone weighing 100 kg, 10 kg is a 10% loss – the level NICE describes as bringing significant health benefits, including lower blood pressure, better blood sugar control and less strain on knees and hips. For a person of 5′6″ (168 cm), 10 kg lowers BMI by about 3.6 points.
Keeping 10 kg off
- Keep weighing yourself weekly.
- Stay active – 150 to 300 minutes a week helps maintenance.
- Increase calories gradually by 100–200 kcal at a time when you reach your goal.
- Have a plan for holidays and stressful times.
Frequently asked questions
Can I lose 10 kg in a month?
Not safely. 10 kg of fat would need a deficit of about 2,500 kcal a day. At a safe rate, 10 kg takes 10 to 20 weeks.
How long does it take to lose 10 kg with exercise?
Exercise adds to your deficit – a daily 45-minute walk could add 200 to 300 kcal – but most of the deficit usually comes from diet. With both, 10 kg typically takes 3 to 5 months.
How many calories should I eat to lose 10 kg?
About 550 to 1,100 kcal less than your maintenance each day, depending on how quickly you want to lose it.
How many stones is 10 kg?
10 kg is about 1 stone 8 lb (22 lb).
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Medical disclaimer: this guide is general information for adults and is not a diagnosis or medical advice. bmicalculatornhs.net is independent and not affiliated with the NHS. Speak to your GP, pharmacist or another qualified health professional about your own health. Full disclaimer.