Stones
0
Equivalent weight
Accurate conversion between kilograms and stones — instant results, no sign-up required
Convert kilograms to stones instantly with our free kg to stones converter 2026. Includes reverse stones to kg conversion, pounds (lbs), grams, full formula reference, and conversion tables for body weight, fitness, and everyday use.
Fast, accurate weight conversion for body weight, fitness tracking, medical records, and everyday calculations in 2026
Convert any weight in kilograms to stones using the exact factor: 1 stone = 6.35029 kg. Therefore, stones = kg ÷ 6.35029. Our kilograms to stones converter also outputs pounds (lbs), stones and pounds combined (e.g., 11 st 4 lb), and grams — giving you a complete multi-unit weight breakdown in one step for 2026.
Switch seamlessly between kilograms to stones and stones to kilograms conversion modes. Whether you are reading a UK or Irish medical record in stones, tracking your body weight across metric and imperial systems, or converting a weight limit from kg to stones, both directions are handled instantly from a single input value.
Essential for anyone in the UK, Ireland, or Australia tracking body weight in stones while using metric scales, medical professionals converting patient weights between systems, personal trainers, dietitians, and fitness enthusiasts. The kilograms to stones calculator is one of the most commonly used weight converters in daily life in 2026.
Select your conversion direction and enter a value below
The kilograms to stones converter is a free online tool that converts any weight in kilograms (kg) to stones (st) — and back — instantly. It uses the exact conversion factor of 1 stone = 6.35029318 kg (or equivalently, 1 stone = 14 pounds, and 1 pound = 0.453592 kg). The tool also outputs the result in the traditional UK format of stones and pounds (e.g., 11 st 4 lb), total pounds, grams, and ounces — all from a single input value with no sign-up needed in 2026.
The stone is a unit of weight still commonly used for body weight in the United Kingdom, Ireland, and parts of Australia, even though these countries officially use the metric system. Because most bathroom scales, fitness apps, and medical records in these regions display weight in both kilograms and stones, a reliable kg to stones calculator is one of the most frequently needed everyday conversion tools. You can also explore our Days to Weeks Converter and other free tools on ConcreteMetric.
1 stone = 14 pounds = 6.35029 kg = 6,350.29 g = 224 oz
The conversion between kilograms and stones is based on the fixed definition of one stone as exactly 14 pounds avoirdupois, where 1 pound = exactly 0.45359237 kg. This gives 1 stone = 14 × 0.45359237 = 6.35029318 kg exactly. This value has been fixed by international agreement since 1959 and does not change — it is the standard used in all kg to stones conversions in 2026.
To quickly estimate kg to stones, divide by 6.35. For a rough mental check, divide by 6 and subtract about 5% — for example, 70 kg ÷ 6 = 11.67, minus 5% ≈ 11.1 stones (exact: 11.023 st). Alternatively, multiply kg by 0.1575 to get stones directly.
The reference table below lists common kilograms to stones conversions covering typical body weight ranges. All values use the exact conversion factor of 1 stone = 6.35029318 kg. For any value not shown, use the kilograms to stones calculator at the top of this page.
| Kilograms (kg) | Stones (decimal) | Stones & Pounds | Pounds (lbs) | Grams (g) |
|---|---|---|---|---|
| 40 kg | 6.299 st | 6 st 4.2 lb | 88.18 lbs | 40,000 g |
| 45 kg | 7.087 st | 7 st 1.2 lb | 99.21 lbs | 45,000 g |
| 50 kg | 7.874 st | 7 st 12.2 lb | 110.23 lbs | 50,000 g |
| 55 kg | 8.661 st | 8 st 9.3 lb | 121.25 lbs | 55,000 g |
| 60 kg | 9.448 st | 9 st 6.3 lb | 132.28 lbs | 60,000 g |
| 63.50 kg | 10.000 st | 10 st 0 lb | 140.00 lbs | 63,503 g |
| 65 kg | 10.236 st | 10 st 3.3 lb | 143.30 lbs | 65,000 g |
| 70 kg | 11.023 st | 11 st 0.3 lb | 154.32 lbs | 70,000 g |
| 75 kg | 11.811 st | 11 st 11.3 lb | 165.35 lbs | 75,000 g |
| 80 kg | 12.598 st | 12 st 8.4 lb | 176.37 lbs | 80,000 g |
| 85 kg | 13.385 st | 13 st 5.4 lb | 187.39 lbs | 85,000 g |
| 90 kg | 14.173 st | 14 st 2.4 lb | 198.42 lbs | 90,000 g |
| 95 kg | 14.960 st | 14 st 13.4 lb | 209.44 lbs | 95,000 g |
| 100 kg | 15.747 st | 15 st 10.5 lb | 220.46 lbs | 100,000 g |
| 110 kg | 17.322 st | 17 st 4.5 lb | 242.51 lbs | 110,000 g |
| 120 kg | 18.897 st | 18 st 12.6 lb | 264.55 lbs | 120,000 g |
| 127.01 kg | 20.000 st | 20 st 0 lb | 280.00 lbs | 127,006 g |
| 150 kg | 23.621 st | 23 st 8.7 lb | 330.69 lbs | 150,000 g |
Use this stones to kilograms reference table when you need to convert a known stone value back to kg. This is particularly useful when reading UK or Irish medical records, pharmacy prescriptions, or fitness assessments stated in stones and pounds.
| Stones (st) | Kilograms (kg) | Pounds (lbs) | Grams (g) | Common Context |
|---|---|---|---|---|
| 5 st | 31.75 kg | 70.00 lbs | 31,751 g | Child / petite adult |
| 6 st | 38.10 kg | 84.00 lbs | 38,102 g | Underweight adult |
| 7 st | 44.45 kg | 98.00 lbs | 44,452 g | Underweight adult |
| 8 st | 50.80 kg | 112.00 lbs | 50,803 g | Light adult |
| 9 st | 57.15 kg | 126.00 lbs | 57,153 g | Healthy range |
| 10 st | 63.50 kg | 140.00 lbs | 63,503 g | Healthy range |
| 11 st | 69.85 kg | 154.00 lbs | 69,854 g | Healthy range |
| 12 st | 76.20 kg | 168.00 lbs | 76,204 g | Healthy / overweight |
| 13 st | 82.55 kg | 182.00 lbs | 82,554 g | Overweight range |
| 14 st | 88.90 kg | 196.00 lbs | 88,905 g | Overweight range |
| 15 st | 95.25 kg | 210.00 lbs | 95,255 g | Overweight range |
| 16 st | 101.60 kg | 224.00 lbs | 101,605 g | Obese range |
| 18 st | 114.31 kg | 252.00 lbs | 114,305 g | Obese range |
| 20 st | 127.01 kg | 280.00 lbs | 127,006 g | Severely obese |
| 25 st | 158.76 kg | 350.00 lbs | 158,757 g | Severely obese |
Converting kilograms to stones involves dividing by 6.35029318. To get the traditional UK format of whole stones plus remaining pounds, follow the three-step method below. This is the same method used by bathroom scales and fitness trackers that display weight in stones and pounds.
First convert your kilogram value to total pounds by multiplying by 2.20462262. Example: 75 kg × 2.20462262 = 165.347 lbs. This intermediate step is needed because one stone = exactly 14 pounds, making pounds the bridge unit between kilograms and stones.
Divide total pounds by 14 and round down to find whole stones. Example: 165.347 ÷ 14 = 11.81, round down = 11 whole stones. Multiply back: 11 × 14 = 154 lbs used. This gives you the whole stone component of the traditional stones-and-pounds format.
Subtract the pounds used from total pounds: 165.347 − 154 = 11.35 lbs remaining. Final answer: 75 kg = 11 stones 11.35 pounds. For a quick decimal check: 75 ÷ 6.35029 = 11.811 stones — the decimal part (0.811 × 14 = 11.35 lb) matches exactly.
Step 1: 82 × 2.20462 = 180.779 lbs total
Step 2: 180.779 ÷ 14 = 12.913 → whole stones = 12. 12 × 14 = 168 lbs used.
Step 3: 180.779 − 168 = 12.78 lbs remaining
Final Answer: 82 kg = 12 stones 12.8 pounds (12 st 12.8 lb)
Decimal check: 82 ÷ 6.35029 = 12.913 st ✔
The kilograms to stones calculator is used in a wide variety of everyday and professional contexts, particularly in countries where both metric and imperial weight systems are in active use simultaneously.
UK and Irish NHS medical records, prescriptions, and clinical notes often quote patient weight in stones and pounds, while modern scales and hospital equipment measures in kg. Nurses, doctors, and pharmacists regularly use kg to stones conversion to communicate weight to patients in their preferred unit system in 2026.
Many UK gym-goers track weight loss and body composition goals in stones (e.g., "I want to get from 14 st to 12 st"), while fitness equipment, nutrition apps, and body fat scales display kilograms. Personal trainers and dietitians constantly convert between kg and stones when setting client goals and tracking progress.
Airline baggage allowances are specified in kilograms, but some travellers from the UK and Ireland think of weight in stones. Converting a 20 kg baggage allowance to stones (3.15 st) or 44.09 lbs helps passengers quickly assess whether their luggage is within limits without needing the airline's scale.
Markets and grocery stores in the UK sold produce in pounds and ounces historically, though EU regulations require metric labelling. Consumers who grew up with imperial measurements still convert kilograms to stones and pounds when buying bulk items, meat, or produce at market stalls and farm shops.
Pet weight is often discussed in pounds or stones in the UK, while veterinary medication dosing uses kg. Converting a dog's weight of 4 stone 2 lbs (≈26.3 kg) to kilograms is essential for correct medication dosing, dietary recommendations, and health monitoring in UK and Irish veterinary practices.
Secondary school students in the UK learn both SI (kg) and imperial (stones, pounds) units in mathematics and science. Converting between the two systems is a standard exam skill. A reliable kilograms to stones calculator helps students verify their manual conversion work and build intuition for the two systems in 2026.
Important: The stone is exclusively used for body weight in everyday UK and Irish usage — it is not commonly used for other types of weight (e.g., food, packages, materials). For those, pounds (lbs) or kilograms are used instead. Also note that when someone says they weigh "11 stone 4", they mean 11 whole stones plus 4 pounds — not 11.4 stones. Our calculator handles this correctly, always displaying both the decimal stone value and the stones-and-pounds breakdown.
The National Institute of Standards and Technology (NIST) provides official conversion factors between SI and US/imperial units including kilograms, pounds, and stones. NIST Handbook 44 is the authoritative reference for all legal weights and measures in the United States and is widely referenced globally in 2026.
Visit NIST →The UK National Health Service (NHS) provides weight and BMI guidance for adults and children, using both kilograms and stones and pounds. Their healthy weight calculator and BMI tools are key references for anyone using the kilograms to stones converter for health and medical purposes in 2026.
Visit NHS Guide →ConcreteMetric offers a full suite of free converters for weight, time, area, energy, pressure, and more. All tools are free, mobile-friendly, and updated for 2026 — no registration or download required. Explore the full collection today.
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