Grams to Ounces Converter
Convert grams (g) to ounces (oz) instantly. Supports standard (avoirdupois) ounces for cooking, shipping and daily use, plus troy ounces for precious metals. Bidirectional: enter grams or ounces and get the other value right away.
Enter any mass in grams.
Rounded to 4 decimals for practicality.
Note
For everyday US/UK use, choose Standard / Avoirdupois. Use Troy only for metals like gold or silver.
Grams to ounces formula
Standard / Avoirdupois:
oz = g ÷ 28.349523125
Troy ounce:
troy oz = g ÷ 31.1034768
To go backwards:
g = oz × 28.349523125 (standard)
g = troy oz × 31.1034768 (troy)
Quick reference: grams to ounces (standard)
| Grams (g) | Ounces (oz) | Notes |
|---|---|---|
| 1 g | 0.0353 oz | very small amount |
| 10 g | 0.3527 oz | ≈ 1/3 oz |
| 28.35 g | 1 oz | exact standard ounce |
| 50 g | 1.7637 oz | common cooking amount |
| 100 g | 3.5274 oz | 100 g = 3.5 oz approx |
| 200 g | 7.0548 oz | ≈ 7 oz |
| 250 g | 8.8185 oz | ≈ 1/2 lb (8 oz) + a bit |
| 500 g | 17.637 oz | ≈ 1.1 lb |
| 1000 g | 35.274 oz | 1 kg |
How to convert grams to ounces (step-by-step)
- Identify the ounce type: standard (most common) or troy (precious metals).
- Take your weight in grams.
- Divide by the grams-per-ounce value: 28.3495 for standard, 31.1035 for troy.
- Round to 2–4 decimals depending on how accurate you need to be.
Example: Convert 180 g to ounces (standard) → 180 ÷ 28.349523125 = 6.349 oz → round to 6.35 oz.
FAQs
Is 1 oz exactly 28 g?
Not exactly. 1 oz (standard, avoirdupois) = 28.349523125 g. Many cooking sites simplify it to 28 g for convenience.
What ounce should I use for recipes?
Use the standard/avoirdupois ounce. Troy ounce is not for cooking.
Can I convert ounces to grams with this tool?
Yes. Click “Swap direction (oz → g)” and type into the ounces field.
Why do different websites show slightly different values?
Because of rounding. We use the precise NIST factors, so your conversions stay consistent across measurements.
Formula (LaTeX) + variables + units
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Standard / Avoirdupois: oz = g ÷ 28.349523125 Troy ounce: troy oz = g ÷ 31.1034768 To go backwards: g = oz × 28.349523125 (standard) g = troy oz × 31.1034768 (troy)
- No variables provided in audit spec.
- NIST — Weights and measures — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/weights-and-measures - NIST — SI units — nist.gov · Accessed 2026-01-19
https://www.nist.gov/pml/owm/metric-si/si-units
Last code update: 2026-01-19
- Initial audit spec draft generated from HTML extraction (review required).
- Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
- Confirm sources are authoritative and relevant to the calculator methodology.