Ounce to Gram Converter

Convert Ounce to Gram — free, instant, accurate. Part of Weight converters.

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1 Ounce = 28.3495 Gram

Ounce to Gram: values and formula

1 Ounce = 28.3495 Gram, and 1 Gram = 0.0352739907 Ounce. To convert a weight value from Ounce to Gram, multiply it by 28.3495. For example, 10 Ounce equals 283.495 Gram, and 250 Ounce equals 7087.375 Gram.

OunceGram
1 Ounce28.3495 Gram
2 Ounce56.699 Gram
5 Ounce141.7475 Gram
10 Ounce283.495 Gram
25 Ounce708.7375 Gram
50 Ounce1417.475 Gram
100 Ounce2834.95 Gram
500 Ounce14174.75 Gram
1000 Ounce28349.5 Gram

When to use the Ounce to Gram converter

  • Shipping and logistics — converting parcel weight between kilograms and pounds.
  • Cooking — switching between grams, ounces, and pounds for international recipes.
  • Fitness — tracking body and lifting weights across systems.
  • Healthcare — recording patient weight where clinical guidelines use a different unit than local custom.

A short history of weight units

Weight (technically mass in everyday usage) was historically measured against grain or stone references, with each region defining its own pound. The kilogram was originally fixed in 1799 as the mass of one litre of water at 4°C, then redefined in 2019 in terms of the Planck constant. The avoirdupois pound used in the US and UK is exactly 0.45359237 kg by international agreement.

Common mistakes when converting weight

Confusing pounds-mass with pounds-force

Everyday "pound" is mass; in engineering, lbf is a force unit. They share a name but measure different things.

Using short ton instead of metric ton

A short ton is 907.185 kg, a long ton is 1016.047 kg, and a metric ton (tonne) is exactly 1000 kg.

Carat vs karat

Carat is a mass unit for gemstones (200 mg). Karat is a purity measure for gold. Same sound, different meaning.

Frequently asked questions

How do I convert Ounce to Gram?+
Enter your Ounce value into the converter above and the equivalent in Gram appears instantly. As a quick reference, 1 Ounce equals 28.3495 Gram and 10 Ounce equals 283.495 Gram. The Formula card shows the exact relationship so you can reproduce the calculation by hand or in a spreadsheet.
What is 1 Ounce in Gram?+
1 Ounce is exactly 28.3495 Gram. The converter above scales this for any value — type a number and the Gram result updates instantly with full precision.
Is the Ounce to Gram converter accurate?+
Yes. Conversions use the official weight factor as published by NIST and BIPM, with full floating-point precision. Results are only rounded for display.
Can I share or bookmark a specific Ounce to Gram value?+
Yes. Add ?v=YOUR_VALUE to the URL (for example /weight/ounce-to-gram?v=100) and the converter pre-fills with that input.
Does Converterse work offline?+
Yes. The site is a Progressive Web App (PWA), so once you have visited any converter page it will keep working without an internet connection.
Is the Ounce to Gram converter free?+
Yes. Every converter on Converterse is free to use, with no sign-up, no usage limits, and no paywall. The site is supported by display advertising.

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