Ounce to Gram (oz to g)
Result
28.34952313 Gram
Formula
g = oz × 28.34952313
1 oz = 28.34952313 g, and 1 g = 0.03527396195 oz.
The kilogram is the SI base unit of mass, defined through the Planck constant since 2019. The international avoirdupois pound is exactly 0.45359237 kg; the ounce is 1/16 lb and the stone 14 lb.
Worked examples
- 1 oz × 28.34952313 = 28.349523 g
- 4 oz × 28.34952313 = 113.39809 g
- 8 oz × 28.34952313 = 226.79619 g
- 16 oz × 28.34952313 = 453.59237 g
Things to know about oz to g
- This is the avoirdupois ounce (28.3495 g) used for food and postage.
- Gold and silver prices use the troy ounce (31.1035 g), so "an ounce of gold" weighs about 10% more than an ounce of flour.
- Fluid ounces measure volume, not weight; use the volume converter for liquids.
Ounce to Gram table
| Ounce (oz) | Gram (g) |
|---|---|
| 1 | 28.349523 |
| 2 | 56.699046 |
| 4 | 113.39809 |
| 5 | 141.74762 |
| 8 | 226.79619 |
| 10 | 283.49523 |
| 16 | 453.59237 |
| 20 | 566.99046 |
| 50 | 1,417.4762 |
| 100 | 2,834.9523 |
| 1,000 | 28,349.523 |
The units
- Ounce (oz)
- The avoirdupois ounce, 1/16 lb = 28.349523125 g. Not the troy ounce used for gold.
- Gram (g)
- One thousandth of a kilogram.
Sources for these factors
- The International System of Units (SI Brochure), 9th edition — BIPM
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy