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Ounces to Grams (oz to g)
Convert ounces to grams: 1 oz = 28.3495 g. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 oz = 28.3495 g
grams = ounces × 28.34952313 — reverse: ounces = grams × 0.03527396195
The factor is derived from the SI definitions of both units (base unit: kg) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.
Worked examples
- 5 oz = 141.748 g
- 12.5 oz = 354.369 g
- 100 oz = 2834.95 g
Ounces to grams conversion table
| Ounces (oz) | Grams (g) |
|---|---|
| 1 | 28.3495 |
| 2 | 56.699 |
| 3 | 85.0486 |
| 4 | 113.398 |
| 5 | 141.748 |
| 6 | 170.097 |
| 7 | 198.447 |
| 8 | 226.796 |
| 9 | 255.146 |
| 10 | 283.495 |
| 15 | 425.243 |
| 20 | 566.99 |
| 25 | 708.738 |
| 30 | 850.486 |
| 40 | 1133.98 |
| 50 | 1417.48 |
| 75 | 2126.21 |
| 100 | 2834.95 |
| 200 | 5669.9 |
| 250 | 7087.38 |
| 500 | 14174.8 |
| 1000 | 28349.5 |
FAQ
How many grams are in one ounce?
1 oz = 28.3495 g. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.
What is the formula to convert ounces to grams?
Multiply the value in ounces by 28.34952313: grams = ounces × 28.34952313. For example, 5 oz = 141.748 g.
How do I convert grams back to ounces?
Multiply by the inverse factor 0.03527396195 (ounces = grams × 0.03527396195), or use the grams-to-ounces page.
Related conversions
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=oz&to_unit=g - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"oz","to_unit":"g"} - Markdown: https://tttkmbb.com/conversion/oz-to-grams.md · JSON: https://tttkmbb.com/conversion/oz-to-grams.json (add
?value=for a result) · Units: /api/v1/units?quantity=mass - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.