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Pounds to Grams (lb to g)
Convert pounds to grams: 1 lb = 453.592 g. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 lb = 453.592 g
grams = pounds × 453.59237 — reverse: pounds = grams × 0.002204622622
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 lb = 2267.96 g
- 12.5 lb = 5669.9 g
- 100 lb = 45359.2 g
Pounds to grams conversion table
| Pounds (lb) | Grams (g) |
|---|---|
| 1 | 453.592 |
| 2 | 907.185 |
| 3 | 1360.78 |
| 4 | 1814.37 |
| 5 | 2267.96 |
| 6 | 2721.55 |
| 7 | 3175.15 |
| 8 | 3628.74 |
| 9 | 4082.33 |
| 10 | 4535.92 |
| 15 | 6803.89 |
| 20 | 9071.85 |
| 25 | 11339.8 |
| 30 | 13607.8 |
| 40 | 18143.7 |
| 50 | 22679.6 |
| 75 | 34019.4 |
| 100 | 45359.2 |
| 200 | 90718.5 |
| 250 | 113398 |
| 500 | 226796 |
| 1000 | 453592 |
FAQ
How many grams are in one pound?
1 lb = 453.592 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 pounds to grams?
Multiply the value in pounds by 453.59237: grams = pounds × 453.59237. For example, 5 lb = 2267.96 g.
How do I convert grams back to pounds?
Multiply by the inverse factor 0.002204622622 (pounds = grams × 0.002204622622), or use the grams-to-pounds page.
Related conversions
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=lb&to_unit=g - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"lb","to_unit":"g"} - Markdown: https://tttkmbb.com/conversion/lbs-to-grams.md · JSON: https://tttkmbb.com/conversion/lbs-to-grams.json (add
?value=for a result) · Units: /api/v1/units?quantity=mass - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.