Calculator

Ounces to Grams

Multiply avoirdupois ounces by 28.349523125 to get grams.

Your inputs

oz

Grams

28.349523

1 oz = 28.349523.

Entered
1 oz

Formula

The ounce follows from the pound:

grams = ounces × 28.349523125

Sixteen of these ounces make one pound.

Assumptions

  • The value can be zero and cannot be negative.
  • The result is shown with up to six decimal places.

Worked example

1 ounce equals 28.349523 grams.

Input definitions

Ounces
Avoirdupois ounces, the ounces on a body or kitchen scale.

Limitations

Precious-metal troy ounces are heavier. This page does not use the troy ounce.

Questions

Why so many decimal places?

28.349523125 is exact because the pound is an exact kilogram value and an ounce is one-sixteenth of it.

Can I convert a fluid ounce of water?

Not here. A fluid ounce is volume. Water's gram weight depends on that volume, which this page does not measure.

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