Kilograms to Stone and Pounds Converter

Kilograms into stones and pounds, the body-weight format used in the UK and Ireland, with the exact 6.35029318 kg per stone factor.

From kg st To

LIVE

Conversions completed

The stone is 14 pounds, not 10

A stone is exactly 14 avoirdupois pounds, or 6.35029318 kg. It is the everyday body-weight unit in the UK and Ireland, and the NHS still publishes weight guidance in stones and pounds. That single fact explains why a 70 kg reading becomes 11 stone rather than the 15.4 you get from a decimal pound value.

Formulas

Direction	Formula	Example
kg to stone	st = kg x 0.1574730444	70 kg = 11.023 st
kg to stone and pounds	whole st = floor(st); lb = (st - whole) x 14	70 kg = 11 st 0.3 lb
stone to kg	kg = st x 6.35029318	11 st = 69.8532 kg

Chart: kilograms to stone and pounds

Kilograms	Stone and pounds	Pounds
50 kg	7 st 12.2 lb	110.2 lb
55 kg	8 st 9.3 lb	121.3 lb
60 kg	9 st 6.3 lb	132.3 lb
65 kg	10 st 3.3 lb	143.3 lb
70 kg	11 st 0.3 lb	154.3 lb
75 kg	11 st 11.3 lb	165.3 lb
80 kg	12 st 8.4 lb	176.4 lb
85 kg	13 st 5.4 lb	187.4 lb
90 kg	14 st 2.4 lb	198.4 lb
95 kg	14 st 13.4 lb	209.4 lb
100 kg	15 st 10.5 lb	220.5 lb
105 kg	16 st 7.5 lb	231.5 lb
110 kg	17 st 4.5 lb	242.5 lb
120 kg	18 st 12.6 lb	264.6 lb

Why UK scales show both

Most UK bathroom scales let you pick kg, st/lb or lb. Switching between them on the same scale is fine; switching between two different scales is not, because body weight drifts by up to a kilogram across a day. Weigh first thing, before eating, if you are tracking a trend.