ConverterKey
HomeAll ConvertersText ToolsLengthTemperatureData
Explore
HomeAll ConvertersText ToolsLengthTemperatureData

ConverterKey

A modern converter toolkit built for speed, precision, and mobile use.

Popular converters

  • Length Converter
  • CM to Inches Converter
  • Feet to Meters Converter
  • Miles to Kilometers Converter
  • Area Converter

Platform

  • About
  • Contact
  • All converters
  • Search tools
  • Browse categories
  • Sitemap

Legal

  • Privacy Policy
  • Terms of Use

© 2026 ConverterKey. Validate critical calculations independently.

  1. Home
  2. /
  3. Converters
  4. /
  5. Weight and Mass Converter
  6. /
  7. Convert stone to kg

Convert stone to kg

Convert Stone (st) to Kilogram (kg) instantly.

Choose how you want the answer displayed.

1st=6.350293kg

Quick ConversionConverted
1 st6.350293 kg
2 st12.700586 kg
5 st31.751466 kg
10 st63.502932 kg
12 st76.203518 kg
15 st95.254398 kg
20 st127.005864 kg
25 st158.75733 kg

Stone

A stone is a mass unit equal to 14 pounds.

Stone remains familiar in the UK and Ireland, especially for reporting body weight.

Kilogram

A kilogram is the SI base unit of mass.

Kilograms are used worldwide for commerce, science, health, shipping, food, equipment, and everyday weights.

How to Convert Stone to Kilogram

Mathematically, kilogram (kg) = stone (st) multiplied by the conversion factor shown below.

1 st = 6.350293 kg

1 kg = 0.157473 st

1 st x 6.350293 = 6.350293 kg

The mass in kilogram (kg) is the mass in stone (st) multiplied by 6.350293.

mass(kg) = mass(st) x 6.350293

Or:

kg = st x 6.350293

Formula: value × 6.35029318

Example: 15 st = 95.254398 kg

Example #1

Convert 5 stone to kilogram:

5 st x 6.350293 = 31.751466 kg

Example #2

Convert 12 stone to kilogram:

12 st x 6.350293 = 76.203518 kg

  1. Start with the mass in stone (st).
  2. Multiply by 6.35029318 to convert stone into kilograms.
  3. Use kilograms when the result needs to match metric scales, medical forms, fitness records, or international documentation.

Precision note: Use 6.35029318 kilograms per stone. For body weight, one decimal place is often enough unless a form or record requires more precision.

How many st in kg and kg in st

1 st = 6.350293 kg

1 kg = 0.157473 st

If you are starting with kilogram instead, use the kg to stone page.

Stone [st]Kilogram [kg]
0.25 st1.587573 kg
0.5 st3.175147 kg
3 st19.05088 kg
4 st25.401173 kg
6 st38.101759 kg
8 st50.802345 kg
14 st88.904105 kg
16 st101.604691 kg
18 st114.305277 kg
30 st190.508795 kg
40 st254.011727 kg
50 st317.514659 kg

Common Use Cases for st to kg

  • Converting body weight from stone to kilograms.
  • Preparing health, fitness, or personal records in metric units.
  • Checking weight values for travel, sport, or medical forms that require kilograms.
  • Comparing stone, pounds, and kilograms in one table.

FAQ

How many kilograms are in one stone?

One stone is about 6.35029318 kilograms.

How many stone are in one kilogram?

One kilogram is about 0.157473044 stone.

Is stone mostly used for body weight?

Yes. Stone is mainly used for body weight in the UK and Ireland. Kilograms are the standard metric unit elsewhere.

More Stone conversions

  • stone to micrograms
  • stone to milligrams
  • stone to grams
  • stone to tonne
  • stone to ounces
  • stone to lbs
  • stone to tons uk long
  • stone to tons us short