How to convert stone to pounds
To convert a measurement in stone to pounds, multiply the value by 14. The conversion factor comes from the relationship between both units and the kilogram.
For example, to convert 5 st to pounds: 5 × 14 = 70 lb.
What is a stone?
A stone is a British imperial unit of mass equal to 14 pounds or exactly 6.35029318 kilograms. The stone was historically used across Europe with regionally varying values before Britain standardized it at 14 pounds. It remains in everyday use in the UK and Ireland for body weight despite metrication.
Common uses of stone include: Body weight in the UK and Ireland; Weigh-ins for sports and fitness in Britain; Historical and livestock weight references; Everyday conversational weight in the British Isles.
What is a pound?
A pound is an imperial and US customary unit of mass equal to 16 ounces or exactly 0.45359237 kilograms. The pound derives from the Roman 'libra' (hence the symbol 'lb'). The international avoirdupois pound was fixed at exactly 0.45359237 kg by the 1959 international yard and pound agreement between English-speaking nations.
Common uses of pounds include: Body weight in the US and UK; Grocery and produce pricing in the US; Bodybuilding and weightlifting loads; Shipping weights for parcels in the US.
Stone to pounds worked examples
Here are some common values converted:
1 st = 14 lb 5 st = 70 lb 10 st = 140 lb 50 st = 700 lb 100 st = 1,400 lb
Frequently asked questions
How many pounds are in one stone?
One stone (st) equals 14 pounds (lb). Multiply any value in stone by 14 to convert to pounds.
How do I convert stone to pounds?
Multiply the value in stone by 14. For example, 5 st × 14 = 70 lb.
How do I convert pounds to stone?
Multiply the value in pounds by 0.071428571429, or divide by 14. Use the swap button on the converter above to reverse the direction.
Is the stone to pound conversion exact?
Yes. Since 1959 the international pound is defined as exactly 0.45359237 kg, so all weight conversions between metric and avoirdupois units use exact factors.
What is the formula for stone to pounds?
The formula is: lb = st × 14. This comes from the definition of both units relative to the kilogram.