Kilograms to Stone (kg to st) Converter

Kilograms to Stone Conversion

The stone (st) is a traditional UK and Irish unit for body weight, while kilograms are the international standard. This converter helps interpret British weight scales and medical records.

Conversion formula: 1 st = 6.35029 kg — divide kilograms by 6.35029.

When You Need This

UK body weight — scales and conversations use stone
Medical records — converting clinic kg to stone
Fitness tracking — many UK apps default to stone
Travel & relocation — adapting to British norms
Diet plans — UK programmes track weight in stone

How to Convert

The Conversion Formula

One stone equals 6.35029318 kilograms (14 pounds). To convert, divide kilograms by 6.35029. For a quick estimate, divide by 6.35. To reverse, multiply stone by 6.35029.

stone = kilograms ÷ 6.35029 — for example, 70 kg ÷ 6.35029 ≈ 11.02 st.

Using the Tool

Enter the value

Type the amount you want to convert into the input field.

Read the result instantly

The converted value appears immediately in the second field — no button to press.

Swap or pick any unit

Press the swap button to reverse direction, or open a dropdown to choose a different unit.

Copy the result

Tap the copy icon next to either field to copy the value for your records.

Worked Examples

Kilograms	Calculation	Stone
50 kg	`50 ÷ 6.35029`	7.87 st
63.5 kg	`63.5 ÷ 6.35029`	10.0 st
70 kg	`70 ÷ 6.35029`	11.02 st
100 kg	`100 ÷ 6.35029`	15.75 st

Features & Use Cases

Tool Capabilities

Instant Two-Way Conversion

Results update as you type. Use the swap button to reverse the direction in one click.

Any Unit, Any Pair

Searchable dropdowns let you switch to grams, ounces, pounds, stone, tons, carats and more — not just the default pair.

Copy & Quick Reference

Copy either value with one tap, and check the built-in reference table for common conversions at a glance.

Common Use Cases

Medical Records

UK clinics record weight in kg but patients think in stone. Convert to discuss weight in familiar terms.

Fitness Tracking

Many UK fitness apps default to stone. Convert your kg scale reading to stone to log progress consistently.

Travel & Relocation

Moving to or visiting the UK means encountering stone everywhere. Convert from kg to understand local weight talk.

Diet Programmes

UK weight-loss programmes track progress in stone and pounds. Convert your kg figure to follow along accurately.

Runs in your browser: All calculations happen locally on your device. Nothing is uploaded — fast and private.

Frequently Asked Questions

How many kilograms are in a stone?

One stone equals 6.35029 kg (which is 14 pounds).

How do I convert 70 kg to stone?

Divide by 6.35029: 70 ÷ 6.35029 ≈ 11.02 st (about 11 stone).

Why does the UK still use stone?

Stone remains a cultural convention for body weight in the UK and Ireland, even though kilograms are official.

How do I express the leftover pounds?

The whole part is stone; multiply the decimal by 14 for pounds. 11.02 st ≈ 11 st 0 lb; 11.5 st = 11 st 7 lb.

How much is 100 kg in stone?

100 ÷ 6.35029 ≈ 15.75 st (about 15 st 10 lb).

Is one stone the same as 14 pounds?

Yes, exactly. 1 stone = 14 pounds = 6.35029 kg by definition.

Kilograms to Stone