Stones to KG Converter

Instantly calculate! Your online conversion tool always at hand to easily convert stones to kilograms. Perfect for tracking body weight, fitness goals, and medical records. The stone is widely used in the UK and Ireland for expressing body weight. Simply enter your value and get accurate results immediately.

How to Convert Stones to KG

kg = stone × 6.35029

1 stone = 6.35029 kg
1 kg = 0.15747 stone

Example: convert 10 stone to kg:
10 stone = 10 × 6.35029 = 63.503 kg

Stones to KG

Value:

Convert to:

From stones to kilograms

6.3503

1 st = 6.3503 kg

Quick Conversion Table

Stone	KG
1	6.3503
2	12.7006
3	19.0509
5	31.7515

Stone	KG
7	44.452
8	50.8023
9	57.1526
10	63.5029

Stone	KG
11	69.8532
12	76.2035
14	88.9041
15	95.2544

About the Units

Stone (st)

The stone (st) is a unit of weight equal to 14 pounds (6.35029 kg). It is used primarily in the United Kingdom and Ireland for expressing body weight. Though not part of the SI system, the stone remains deeply embedded in British and Irish culture. When someone in the UK says they weigh "10 stone," they mean 140 pounds or approximately 63.5 kg. The unit has been in use since at least the 14th century.

Kilogram (kg)

The kilogram (kg) is the base unit of mass in the International System of Units (SI). Originally defined in 1795 as the mass of one liter of water at 4 °C, it was redefined in 2019 using the Planck constant for greater precision. The kilogram is used worldwide for science, industry, and everyday commerce. Most countries outside the US use kilograms as their primary unit of weight.

Frequently Asked Questions

How many kg is 1 stone?

1 stone equals exactly 6.35029 kilograms (or 14 pounds).

How to convert stones to kg?

To convert stones to kilograms, multiply the stone value by 6.35029. For example, 10 stone = 10 × 6.35029 = 63.503 kg.

What is 10 stone in kg?

10 stone equals 63.503 kilograms (10 × 6.35029).

How many stones is 70 kg?

70 kg equals approximately 11.02 stone (70 ÷ 6.35029).

What is 8 stone in kg?

8 stone equals 50.802 kilograms (8 × 6.35029).

What is 12 stone in kg?

12 stone equals 76.204 kilograms (12 × 6.35029).

Is stone still used today?

Yes, the stone is still widely used in the United Kingdom and Ireland for expressing body weight in everyday conversation, even though kilograms are the official SI unit.

How many pounds in a stone?

There are exactly 14 pounds in one stone. This has been standardized since the 14th century.

What is a healthy weight in stones?

A healthy weight depends on height and build. As a rough guide, for an average-height adult (5'7"–5'10"), a healthy weight is typically between 9 and 12 stone (57–76 kg).

Quick way to estimate stones to kg?

A quick mental trick: multiply the stone value by 6, then add half of the stone value. For example, 10 stone ≈ 60 + 5 = 65 kg (actual: 63.5 kg). It's close enough for quick estimates.