How many kilograms in 1 st?
1 st = 6.35029318 kg. The other way round: 1 kg = 0.1574730444 st. One stone is 14 pounds, about 6.35 kg. In the UK and Ireland body weight is still often stated in stones and pounds, e.g. 11 st 4 lb. The kilogram is the SI base unit of mass; since 20 May 2019 it is defined through the Planck constant instead of a metal prototype kept near Paris.
Stone to kilograms conversion table
1 st = 6.3503 kg · 2 st = 12.7006 kg · 3 st = 19.0509 kg · 4 st = 25.4012 kg · 5 st = 31.7515 kg · 6 st = 38.1018 kg · 7 st = 44.4521 kg · 8 st = 50.8023 kg · 9 st = 57.1526 kg · 10 st = 63.5029 kg · 12 st = 76.2035 kg · 15 st = 95.2544 kg · 20 st = 127.0059 kg · 25 st = 158.7573 kg · 30 st = 190.5088 kg · 40 st = 254.0117 kg · 50 st = 317.5147 kg · 75 st = 476.272 kg · 100 st = 635.0293 kg · 1,000 st = 6,350.2932 kg
How to convert stone to kilograms
Multiply the value by 6.35029318. Example: 37 st = 234.9608 kg.
Unit Converter
How to use
- 1Pick a category — length, weight, temperature, volume, area, speed, data, time, pressure or energy.
- 2Choose the “from” and “to” units, or press swap to reverse them.
- 3Type a value in either field — the other side updates as you type.
- 4Adjust the decimal precision and check the conversion table for common values.
Exact conversion factors
Many imperial units are defined exactly in metric terms: 1 inch = 2.54 cm, 1 foot = 0.3048 m, 1 mile = 1.609344 km, 1 pound = 0.45359237 kg and 1 US gallon = 3.785411784 litres. The converter uses these definitions, so results are as precise as the decimals you choose to show. The formula is displayed in words — for example “multiply by 2.54” — so you can repeat the calculation by hand.
Temperature is different
Celsius, Fahrenheit and Kelvin do not share a zero point, so temperature cannot be converted with a single factor. °F = °C × 9/5 + 32 and °C = (°F − 32) × 5/9; Kelvin is Celsius + 273.15. That is why 0 °C is 32 °F, while a 10-degree change in Celsius is an 18-degree change in Fahrenheit.
US vs UK units and data sizes
A US gallon (3.785 L) is smaller than an imperial UK gallon (4.546 L), and US fluid ounces differ slightly from UK ones — check which system your recipe or spec uses. For data sizes, storage makers use decimal units (1 GB = 1,000 MB), while operating systems often count in binary units (1 GiB = 1,024 MiB), which is why a new drive shows less capacity than the label.
Frequently asked questions
How many centimetres are in an inch?
Exactly 2.54 cm. To convert cm to inches, divide by 2.54.
How do I convert kg to pounds?
Multiply kilograms by about 2.20462. One pound is exactly 0.45359237 kg.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. For example, 20 °C × 1.8 + 32 = 68 °F.
Can I convert in both directions?
Yes. Type in either field and the other updates, or press swap to switch the units.
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