Stone (st)
A stone equals 14 pounds, or exactly 6.35029318 kilograms in the UK definition.
Stones are commonly used for personal body weight in the United Kingdom and Ireland.
Stone to Kilogram
Convert stone to kilogram instantly. Type in either field — results update live.
Instant
Private
Free
Weight & Mass Stone Kilogram
1 stone = 6.35029318 kilograms
Unit
Unit
Conversion table
Selected st values converted to kg using the exact factor from this tool.
| st | kg |
|---|---|
| 0.01 | 0.0635029318 |
| 0.1 | 0.635029318 |
| 1 | 6.35029318 |
| 2 | 12.70058636 |
| 3 | 19.05087954 |
| 5 | 31.7514659 |
| 10 | 63.5029318 |
| 20 | 127.0058636 |
| 50 | 317.514659 |
| 100 | 635.029318 |
| 1,000 | 6,350.29318 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 st = 6.35029318 kg
1 kg = 0.1574730444 st
To convert stone to kilogram, multiply by 6.35029318.
To convert kilogram to stone, multiply by 0.1574730444.
Example: convert 10 st to kg
10 × 6.35029318 = 63.5029318 kg
About these units
Short background on the units used in this conversion.
Kilogram (kg)
The kilogram is the SI base unit of mass, defined by fixing the numerical value of the Planck constant.
Kilograms are used worldwide for body weight, food packaging, shipping labels, and science wherever the metric system is standard.
Frequently asked questions
How many kilograms are in one stone?
One stone equals 6.35029318 kilograms. Multiply your stones value by 6.35029318 to convert to kilograms.
What is the conversion formula?
kg = st × 6.35029318The reverse is
st = kg × 0.1574730444, using the same exact factors as this converter.Is this Stone to Kilogram converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All stone conversions
Jump to any weight & mass conversion starting from stone — including the reverse direction and every other unit in our dataset.
kilogram (kg) → stone (st)
stone (st) → gram (g)stone (st) → milligram (mg)stone (st) → microgram (µg)stone (st) → centigram (cg)stone (st) → decigram (dg)stone (st) → dekagram (dag)stone (st) → hectogram (hg)stone (st) → metric ton (tonne) (t)stone (st) → picogram (pg)stone (st) → nanogram (ng)stone (st) → femtogram (fg)stone (st) → attogram (ag)stone (st) → megagram (Mg)stone (st) → gigagram (Gg)stone (st) → teragram (Tg)stone (st) → petagram (Pg)stone (st) → exagram (Eg)stone (st) → pound (lb)stone (st) → ounce (oz)stone (st) → short ton (us) (ton)stone (st) → long ton (uk) (long ton)stone (st) → hundredweight (us) (cwt)stone (st) → hundredweight (uk) (cwt-UK)stone (st) → quarter (us) (qr)stone (st) → dram (avoirdupois) (dr)stone (st) → grain (gr)stone (st) → slugstone (st) → troy ounce (oz t)stone (st) → dram (apothecary) (dr ap)stone (st) → troy pound (lb t)stone (st) → pennyweight (dwt)stone (st) → carat (ct)stone (st) → atomic mass unit (u)stone (st) → planck mass (mₚ)stone (st) → electron mass (mₑ)stone (st) → proton mass (mₚ⁺)stone (st) → neutron mass (mₙ)stone (st) → solar mass (M☉)stone (st) → earth mass (M⊕)stone (st) → quintal (q)stone (st) → mommestone (st) → cattystone (st) → piculstone (st) → arrobastone (st) → macestone (st) → baht (gold)stone (st) → talent (biblical)stone (st) → minastone (st) → shekel