Instant kg to stones and pounds converter
Enter a weight in kilograms to convert it into stones and pounds (st lb).
Why use a kg to stones and lbs calculator?
Different countries use different weight systems. In many places, body weight is usually recorded in kilograms. In the UK and Ireland, however, people often describe weight in stones and pounds. That can make things confusing when reading medical notes, fitness plans, or online advice.
This calculator gives you a quick and accurate conversion so you can understand numbers in both systems immediately.
How the conversion works
Step 1: Convert kilograms to pounds
To start, kilograms are converted into pounds using this multiplier:
- 1 kilogram = 2.2046226218 pounds
Step 2: Split pounds into stones and remaining pounds
Once total pounds are known, divide by 14 because:
- 1 stone = 14 pounds
The whole-number part is the stone value, and what remains is pounds.
Manual example
Suppose you want to convert 70 kg:
- 70 × 2.2046226218 = 154.3236 lb
- 154.3236 ÷ 14 = 11 stones with 0.3236×14? Better done as remainder:
- 11 stones = 154 lb exactly
- Remainder = 154.3236 − 154 = 0.3236 lb
So, 70 kg ≈ 11 st 0.32 lb.
Quick reference chart
| Kilograms (kg) | Stones and pounds (st lb) | Total pounds (lb) |
|---|---|---|
| 50 | 7 st 12.23 lb | 110.23 lb |
| 55 | 8 st 9.25 lb | 121.25 lb |
| 60 | 9 st 6.28 lb | 132.28 lb |
| 65 | 10 st 3.30 lb | 143.30 lb |
| 70 | 11 st 0.32 lb | 154.32 lb |
| 75 | 11 st 11.35 lb | 165.35 lb |
| 80 | 12 st 8.37 lb | 176.37 lb |
| 90 | 14 st 2.42 lb | 198.42 lb |
| 100 | 15 st 10.46 lb | 220.46 lb |
When this converter is useful
- Reading UK fitness plans that use stones and pounds
- Comparing old medical records with modern metric records
- Tracking weight-loss progress with friends or family abroad
- Understanding gym conversations and sports weight classes
Accuracy and rounding notes
This page shows pounds to two decimal places for practical use. If you need clinical precision, keep more decimal places in pounds and avoid rounding until your final step.
For day-to-day bodyweight tracking, two decimal places is usually more than enough.
Frequently asked questions
Is a stone still used officially?
In many UK contexts, yes—especially for body weight. In scientific and international contexts, kilograms are standard.
Can I enter decimal kilograms?
Yes. The calculator accepts decimal values such as 72.3 kg or 84.75 kg.
Why not just use pounds only?
You can, and this calculator also shows total pounds. But many people prefer stones and pounds because it feels more familiar for body weight.
Final thoughts
If you frequently switch between metric and imperial systems, keeping a reliable kg to stones and lbs calculator bookmarked can save time and avoid mistakes. Use the converter above whenever you need a fast, clear answer.