KG to Stone Conversion Guide: Kilograms to Stone & Pounds
In the UK, we commonly express body weight in stone and pounds, while medical professionals and fitness equipment often use kilograms. This guide helps you convert between these systems with ease.
Convert Your Weight
Use our free Stone to KG Converter for instant results.
The Conversion Formulas
Stone to KG: kg = stone × 6.35029
1 stone = 6.35029 kg
1 stone = 14 pounds
1 kg = 2.20462 pounds
Quick Reference: KG to Stone Chart
| Kilograms | Stone | Stone & Pounds |
|---|---|---|
| 50 kg | 7.87 st | 7 st 12 lb |
| 55 kg | 8.66 st | 8 st 9 lb |
| 60 kg | 9.45 st | 9 st 6 lb |
| 65 kg | 10.24 st | 10 st 3 lb |
| 70 kg | 11.02 st | 11 st 0 lb |
| 75 kg | 11.81 st | 11 st 11 lb |
| 80 kg | 12.60 st | 12 st 8 lb |
| 85 kg | 13.39 st | 13 st 5 lb |
| 90 kg | 14.17 st | 14 st 2 lb |
| 95 kg | 14.96 st | 14 st 13 lb |
| 100 kg | 15.75 st | 15 st 10 lb |
Detailed KG to Stone Conversion Table
| KG | Stone & Pounds | KG | Stone & Pounds |
|---|---|---|---|
| 45 kg | 7 st 1 lb | 73 kg | 11 st 7 lb |
| 48 kg | 7 st 8 lb | 76 kg | 11 st 13 lb |
| 51 kg | 8 st 0 lb | 79 kg | 12 st 6 lb |
| 54 kg | 8 st 7 lb | 82 kg | 12 st 12 lb |
| 57 kg | 8 st 13 lb | 85 kg | 13 st 5 lb |
| 60 kg | 9 st 6 lb | 88 kg | 13 st 12 lb |
| 63 kg | 9 st 13 lb | 91 kg | 14 st 5 lb |
| 66 kg | 10 st 5 lb | 94 kg | 14 st 11 lb |
| 69 kg | 10 st 12 lb | 97 kg | 15 st 4 lb |
| 72 kg | 11 st 5 lb | 100 kg | 15 st 10 lb |
How to Convert KG to Stone and Pounds
Step-by-Step Example: Convert 78 kg
- Divide by 6.35: 78 ÷ 6.35 = 12.28 stone
- Take the whole number: 12 stone
- Take the decimal (0.28) and multiply by 14: 0.28 × 14 = 3.9 pounds
- Round the pounds: 4 pounds
Result: 78 kg = 12 stone 4 pounds
Stone to KG Conversion Chart
| Stone | Kilograms | Pounds |
|---|---|---|
| 7 st | 44.45 kg | 98 lb |
| 8 st | 50.80 kg | 112 lb |
| 9 st | 57.15 kg | 126 lb |
| 10 st | 63.50 kg | 140 lb |
| 11 st | 69.85 kg | 154 lb |
| 12 st | 76.20 kg | 168 lb |
| 13 st | 82.55 kg | 182 lb |
| 14 st | 88.90 kg | 196 lb |
| 15 st | 95.25 kg | 210 lb |
| 16 st | 101.60 kg | 224 lb |
Pounds to Stone Quick Reference
Since 1 stone = 14 pounds, here's how pounds relate to stone:
| Pounds | Stone & Pounds |
|---|---|
| 1 lb | 0 st 1 lb |
| 7 lb | 0 st 7 lb (half stone) |
| 14 lb | 1 st 0 lb |
| 28 lb | 2 st 0 lb |
| 100 lb | 7 st 2 lb |
| 140 lb | 10 st 0 lb |
| 154 lb | 11 st 0 lb |
| 168 lb | 12 st 0 lb |
Why the UK Uses Stone
The stone has been used in the British Isles for centuries, originally for weighing agricultural commodities. While the UK officially adopted the metric system in 1965, stone remains the most common way to express body weight in everyday conversation.
Where Different Units Are Used
- Stone and pounds: Everyday conversation, older scales, traditional contexts
- Kilograms: Medical settings, fitness equipment, scientific contexts
- Pounds only: US influence, some fitness apps
BMI Calculations with Stone and KG
Body Mass Index requires weight in kilograms:
If you know your weight in stone, first convert to kg:
Weight (kg) = Stone × 6.35 + (Pounds × 0.453)
Example: BMI for 11 stone 7 lb, 5'8" tall
- Weight: (11 × 6.35) + (7 × 0.453) = 69.85 + 3.17 = 73.02 kg
- Height: 5'8" = 1.73 m
- BMI: 73.02 ÷ (1.73 × 1.73) = 73.02 ÷ 2.99 = 24.4
A BMI of 24.4 is in the healthy weight range (18.5-24.9).
Weight Loss Tracking
When tracking weight loss, it's helpful to understand both units:
| Weight Loss | In Stone | In KG | In Pounds |
|---|---|---|---|
| Half stone | 0.5 st | 3.18 kg | 7 lb |
| One stone | 1 st | 6.35 kg | 14 lb |
| Two stone | 2 st | 12.70 kg | 28 lb |
| Three stone | 3 st | 19.05 kg | 42 lb |
| 5% of 80kg | ~0.6 st | 4 kg | 8.8 lb |
| 10% of 80kg | ~1.3 st | 8 kg | 17.6 lb |
Quick Mental Conversion Tips
Easy Approximations
- 1 stone ≈ 6.5 kg (close enough for quick estimates)
- 10 stone ≈ 64 kg
- 14 kg ≈ 2.2 stone
- Double the stone, add 10% = rough kg
Example: 10 stone → 20 + 2 = 22... wait, that's not right. Better to use: Stone × 6.5 = approximate kg
Common Weight Benchmarks
| Description | Stone | KG |
|---|---|---|
| Average UK woman | ~11 st | ~70 kg |
| Average UK man | ~13 st | ~83 kg |
| Olympic lightweight boxer (M) | ~9 st 9 lb | 60 kg |
| Olympic heavyweight boxer (M) | ~14 st 4 lb | 91 kg |
| Newborn baby | ~0.5 st | ~3.5 kg |
Convert Your Weight Now
Use our Stone to KG Converter for accurate conversions!
Conclusion
Key conversion facts to remember:
- 1 stone = 6.35 kg = 14 pounds
- 10 stone = 63.5 kg = 140 pounds
- To convert kg to stone: divide by 6.35
- To convert stone to kg: multiply by 6.35
- For stone and pounds: get whole stone, then multiply decimal by 14 for pounds
Whether you're tracking fitness goals, understanding medical information, or just curious about your weight in different units, these conversions will help you navigate between the systems used in the UK.