Stones to kilograms Converter

This weight conversion tool quickly converts stones to kilograms with this free online converter. Fast, accurate, and perfect to convert the stones [s] to kilograms [k].

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How to Convert Stones to Kilograms

To convert stones to kilograms, multiply the number of stones by 6.35029. Since one stone equals approximately 6.35029 kilograms, this conversion bridges UK imperial units with the metric system.

Conversion Formula:

value * 6.35029

Understanding the Conversion

Converting stones to kilograms is essential for international communication, medical records, and scientific applications where UK weight measurements need to be expressed in metric units. This conversion connects the traditional UK stone unit with the metric system's kilogram, the base unit for mass in the International System of Units (SI).

One stone equals approximately 6.35029 kilograms, requiring multiplication by this factor to convert. This conversion is particularly important in healthcare and fitness contexts in the UK, where body weight may be measured in stones but needs to be converted to kilograms for international medical records, pharmaceutical dosages, or fitness tracking applications that use metric units.

The conversion factor of 6.35029 is precise and based on international standards. This accuracy makes stones to kilograms conversions reliable in fields like healthcare, where accurate conversions ensure proper medical documentation and international compatibility.

Conversion Examples

Example: Convert 1 stone to kilograms

Step 1: Identify the conversion factor. Since 1 stone = 6.35029 kilograms, multiply stones by 6.35029.
Step 2: Multiply 1 stone by 6.35029.
Step 3: 1 × 6.35029 = 6.35029 kilograms

1 stone = 6.35029 kilograms

This demonstrates the conversion factor between stones and kilograms.

Example: Convert 0.5 stones to kilograms

Step 1: Use the conversion factor: 1 stone = 6.35029 kilograms.
Step 2: Multiply 0.5 stones by 6.35029.
Step 3: 0.5 × 6.35029 = 3.175145 kilograms

0.5 stones = 3.175145 kilograms

This shows converting half a stone, useful for precise measurements.

Example: Convert 2 stones to kilograms

Step 1: Conversion factor: 1 stone = 6.35029 kilograms.
Step 2: 2 stones × 6.35029
Step 3: Result = 12.70058 kilograms

2 stones = 12.70058 kilograms

This illustrates converting a larger stone value to kilograms for practical applications.

Conversion Formula

The formula to convert stones to kilograms is:

stones × 6.35029 = kilograms

Mathematically, you can write this as:


stones × 6.35029 kilograms/stone = kilograms

Multiplying by 6.35029 converts stones to kilograms using the standard conversion factor, since one stone equals approximately 6.35029 kilograms (14 pounds × 0.453592 kilograms per pound).

Conversion Chart

Stones	Kilograms
0.5	3.175145
1	6.35029
2	12.70058
3	19.05087
5	31.75145
10	63.5029
15	95.25435
20	127.0058
25	158.75725

Quick Conversion Tip

Quick conversion: Multiply stones by approximately 6.35 to get kilograms. For example, 1 st ≈ 6.35 kg, 2 st ≈ 12.7 kg, 5 st ≈ 31.75 kg.

Unit Definitions

Stone (st)

A stone is an imperial unit of mass used primarily in the UK and Ireland. One stone equals 14 pounds or 224 ounces, commonly used for body weight measurements.

1 stone = 6.35029 kilograms = 14 pounds = 6,350.29 grams

Kilogram (kg)

A kilogram is the base unit of mass in the International System of Units (SI). It equals 1000 grams and is used worldwide for weight measurements.

1 kilogram = 0.157473 stones = 2.20462 pounds = 1000 grams

Common Use Cases

Medical records: Convert patient weights from stones to kilograms for international medical documentation and pharmaceutical calculations.
Fitness and health: Convert body weight from stones to kilograms when tracking fitness goals or using equipment with metric units.
International travel: Convert luggage weights from stones to kilograms for airline restrictions and international travel.
Scientific research: Convert sample weights from stones to kilograms for laboratory work requiring metric units.
Sports and athletics: Convert athlete weights from stones to kilograms for international competitions and records.
Healthcare: Convert body weight from stones to kilograms for medical calculations and international health records.