Grams to Stones Converter

by

Enter a weight in grams to find its decimal-stones value and the equivalent stones-and-pounds notation.

Advanced options
Did we solve your problem today?

How to use our Grams to Stones Converter

  1. Enter the measured value in "Weight (g)." You can type a decimal point, valid thousands commas, or a g suffix such as 1,000 g.
  2. Use a decimal point for part of a gram. For example, enter 3175.14659 for half a stone.
  3. Open "Advanced options" and choose "Decimal places" if you need a shorter or more detailed decimal-stones answer.
  4. Select "Calculate" to see "Weight in decimal stones."
  5. Use "Same weight in stones and pounds" when you need UK-style mixed notation. For example, 0.5 st equals 0 st 7 lb, not 0 st 5 lb.
Example inputs for Grams to Stones Converter
Example inputs for Grams to Stones Converter

Definitions

Gram (g): A metric unit of mass.

Stone (st): A unit of mass equal to 14 pounds or 6,350.29318 grams.

Decimal stones: A stone value written as one base-10 number, such as 1.5 st.

Stones and pounds: Mixed-unit notation that gives whole stones followed by the pounds left over, such as 1 st 7 lb.

Common mistakes and quick fixes

Mistake: Reading 11.4 st as 11 st 4 lb.
Fix: The digits after the decimal are part of a base-10 number. Check "Same weight in stones and pounds" for the pounds remainder.

Mistake: Using a comma as a decimal separator, such as 1,5.
Fix: Use a decimal point for fractions: enter 1.5. Use commas only for thousands grouping, such as 6,350.29318.

Mistake: Rounding the gram measurement before converting it.
Fix: Enter the full measured value when available, then choose how many decimal places to show in stones.

Limitations & Key Assumptions / Boundary Conditions

  • This converter accepts nonnegative mass values in grams. It does not convert force, such as a reading in newtons.
  • The decimal-stones answer is rounded only for display. A very small nonzero value can appear as zero if too few decimal places are selected.
  • The stones-and-pounds result rounds the displayed pounds remainder. If that rounding reaches 14 lb, the converter carries it into the stone count.

Methodology

Conversion method

One stone equals 14 pounds, or 6,350.29318 grams.

decimal_stones = grams / 6350.29318

The calculator uses the full converted value, then rounds only the displayed decimal-stones answer to the selected number of decimal places.

Stones and pounds breakdown

whole_stones = floor(decimal_stones)

remaining_pounds = (decimal_stones - whole_stones) * 14

For example, 3,175.14659 g divided by 6,350.29318 equals 0.5 st. The whole-stone part is 0, and 0.5 multiplied by 14 is 7 lb, so the mixed result is 0 st 7 lb.