How many stone is 70 kg?

Seventy kilograms equals 11 stone 0.2 pounds (approximately 11 stone). This is a common weight for an average-height adult in the UK. To calculate it: 70 / 6.35029 = 11.023 stone.

Why does the UK use stone for body weight?

Stone has been used in the British Isles for centuries and remains the most common way to discuss body weight in everyday conversation. Medical professionals and official records typically use kilograms, but most people still think in stone and pounds when talking about how much they weigh.

How do I convert kg to stone and pounds together?

Divide the kg value by 6.35029 to get total stone. The whole number is the stone, and the decimal part multiplied by 14 gives the remaining pounds. For example, 80 kg = 80 / 6.35029 = 12.598 stone = 12 stone 8.4 pounds.

Kilograms to Stone Converter

Convert kilograms to stone and pounds, or stone to kilograms

Published by UltraCalculatorsLast reviewed: 1 Apr 2026v1.0Report an issue

The United Kingdom has a uniquely dual relationship with weight measurement. While the metric system is standard in medicine, science, and commerce, the stone remains the preferred unit for body weight in everyday British life. Ask anyone in the UK how much they weigh and the answer will almost certainly come in stone and pounds rather than kilograms. This creates a constant need for conversion. Your GP records your weight in kilograms, your bathroom scales might show kg, and fitness apps from international developers typically default to metric. But when you tell a friend your weight or set a target at a slimming club, you think in stone. One stone equals exactly 6.35029 kilograms, and there are 14 pounds in a stone. This converter handles the translation in both directions. Enter a value in kilograms to see the equivalent in stone and pounds, or enter stone and pounds to find the metric weight. Results are precise to four decimal places, though for practical purposes rounding to the nearest half-pound is usually sufficient.

How to Use This Calculator

To use the kilograms to stone converter: 1. Select the conversion direction. Choose "Kilograms to Stone and Pounds" if you have a metric weight and want the imperial equivalent. Choose "Stone and Pounds to Kilograms" for the reverse. 2. For kg to stone: Enter your weight in kilograms. The converter shows the result broken down into whole stone and remaining pounds, plus the total in pounds. 3. For stone to kg: Enter the stone value and any additional pounds separately. For example, if you weigh 12 stone 7 pounds, enter 12 in the stone field and 7 in the pounds field. 4. Results update instantly as you adjust the inputs, making it easy to check multiple values or track weight changes over time.

How It Works

The conversion uses the defined relationship: 1 stone = 6.35029 kg (1 stone = 14 pounds, 1 pound = 0.453592 kg). Kilograms to Stone: Total stone (decimal) = kg / 6.35029 Whole stone = floor of total stone Remaining pounds = (total stone - whole stone) x 14 Example: 75 kg = 75 / 6.35029 = 11.811 stone = 11 stone 11.35 pounds (approximately 11 st 11 lbs) Stone and Pounds to Kilograms: Total kg = (stone x 6.35029) + (pounds / 2.20462) Example: 10 st 7 lbs = (10 x 6.35029) + (7 / 2.20462) = 63.503 + 3.175 = 66.678 kg

Worked Examples

Example 1: Converting NHS weight record to stone

Inputs: Kilograms: 82.5. Direction: kg to stone.

Total stone: 82.5 / 6.35029 = 12.992 stone.
Whole stone: 12.
Remaining pounds: 0.992 x 14 = 13.9 lbs.

Result: 82.5 kg is 12 stone 13.9 pounds, effectively 13 stone.

Example 2: Setting a fitness goal in kg from a stone target

Inputs: Stone: 10. Pounds: 0. Direction: stone to kg.

Total kg = 10 x 6.35029 = 63.503 kg.
Total pounds = 10 x 14 = 140 lbs.

Result: A target of 10 stone equals 63.5 kg or 140 pounds.

Example 3: Checking luggage weight against airline limits

Inputs: Kilograms: 23. Direction: kg to stone.

Total stone: 23 / 6.35029 = 3.622 stone.
Whole stone: 3.
Remaining pounds: 0.622 x 14 = 8.7 lbs.

Result: 23 kg (a standard airline luggage limit) is 3 stone 8.7 pounds, or about 50.7 lbs.

Useful reference points: 8 stone = 50.8 kg, 10 stone = 63.5 kg, 12 stone = 76.2 kg, 14 stone = 88.9 kg, 16 stone = 101.6 kg. The average UK adult male weighs around 13 stone 3 lbs (83.6 kg) and the average UK adult female weighs around 11 stone (70.2 kg). When tracking weight loss, 1 stone lost equals 6.35 kg, and losing 1 kg equates to about 2.2 pounds.