About Ounces → Grams
US nutrition labels and spice jars often show ounces. Metric scales and EU recipes use grams. Converting oz to g keeps ingredient totals consistent.
Multiply ounces by 28.3495 for grams.
Opposite of grams-to-ounces.
Weight
Ounces to Grams Converter
US nutrition labels and spice jars often show ounces. Metric scales and EU recipes use grams. Converting oz to g keeps ingredient totals consistent.
How to use this tool
Input weight in ounces. Calculate for grams.
Formula & methodology
This ounces to grams converter applies the standard relationship below. Intermediate values are kept at full precision; only the displayed result is rounded.
g = oz x 28.349523125
Tips for accurate results
- A US stick of butter is 4 oz (~113 g).
- Package net weight oz converts directly; drained weight may differ.
- Reverse: g-to-oz.
- Weigh after zeroing tare for containers.
Frequently asked questions
1 oz in grams?
About 28.35 g.
Fluid oz?
Not the same—volume fl oz needs volume converter.
Free?
Yes.
Postal ounces?
Avoirdupois ounces typically apply to small package weights.
Sources & references
The factors and formulas used by this tool follow these references:
- NIST Special Publication 811 — Guide for the Use of the International System of Units (SI)
- BIPM — The International System of Units (SI Brochure, 9th edition)
Last reviewed: September 2026. Found an error? Tell us and we will correct it.
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