Stone to Pounds Converter

1 st equals 14 lb, and 1 lb equals 0.071428571 st. Enter a value in either box to convert stone to pounds and back. Formula: kilograms = value x unit factor (1 lb = 0.45359237 kg exactly, 1 oz = 1/16 lb, 1 st = 14 lb).

· CalcFlow Editorial

1 st = 14 lb

Results shown are estimates for informational purposes only. Nothing on CalcFlow is financial, tax, legal, or medical advice. Always consult a qualified professional before making important decisions.

Stone to Pounds Conversion Table

StonePounds
1 st14 lb
2 st28 lb
5 st70 lb
10 st140 lb
25 st350 lb
50 st700 lb
75 st1,050 lb
100 st1,400 lb
200 st2,800 lb

Pounds to Stone Conversion Table

PoundsStone
1 lb0.071428571 st
2 lb0.14285714 st
5 lb0.35714286 st
10 lb0.71428571 st
25 lb1.7857143 st
50 lb3.5714286 st
75 lb5.3571429 st
100 lb7.1428571 st
200 lb14.285714 st

Worked example: 10 st = 140 lb. A 70 kg person weighs 70 x 2.20462 = 154.32 lb, which is 11 stone and 0.3 lb. A 500 g bag of flour is 17.64 oz.

Need other units? Open the full Weight and Mass Converter.

Formula

kilograms = value x unit factor (1 lb = 0.45359237 kg exactly, 1 oz = 1/16 lb, 1 st = 14 lb)

Understanding Weight Conversion

Mass is measured in kilograms in the metric system, while the United States uses pounds and ounces and the UK often uses stones for body weight. The avoirdupois pound has been defined as exactly 0.45359237 kilograms since 1959, so conversions are exact. Strictly, weight is a force and mass is an amount of matter, but in everyday use both words mean the same thing on a scale at the surface of the Earth.

Tips and Best Practices

  • 1To convert kilograms to pounds, multiply by 2.20462; to convert pounds to kilograms, multiply by 0.45359.
  • 2A stone is 14 pounds, so body weight in stones and pounds needs a division by 14 and a remainder.
  • 3Jewelry uses carats (200 mg) for gemstones; do not confuse them with karats, which measure gold purity.

Real-World Example

A 70 kg person weighs 70 x 2.20462 = 154.32 lb, which is 11 stone and 0.3 lb. A 500 g bag of flour is 17.64 oz.

Common Mistakes to Avoid

  • Confusing the short ton (2,000 lb, US) with the long ton (2,240 lb, UK) and the metric tonne (1,000 kg).
  • Using troy ounces for gold with the regular avoirdupois ounce factor; troy ounces are heavier.
  • Reading a stone value like 11.5 st as 11 st 5 lb; it is 11 st 7 lb.

How to Use

  1. Type a number in the Stone box.
  2. The Pounds result appears instantly; you can also edit the Pounds box to convert backwards.
  3. Use the swap button to reverse the direction and Copy result to copy the answer.

Frequently Asked Questions

Q

How many pounds are in 1 st?

1 st equals 14 lb.
Q

How many stone are in 1 lb?

1 lb equals 0.071428571 st.
Q

What is the formula to convert stone to pounds?

kilograms = value x unit factor (1 lb = 0.45359237 kg exactly, 1 oz = 1/16 lb, 1 st = 14 lb).
Q

How many ounces are in a pound?

There are exactly 16 avoirdupois ounces in a pound.

Sources: NIST Handbook 44 Appendix B (avoirdupois pound, ton, grain); BIPM SI Brochure (tonne, carat 200 mg).