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Pounds to Metric tons (tonnes) (lb to t)
Convert pounds to metric tons (tonnes): 1 lb = 0.000453592 t. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 lb = 0.000453592 t
metric tons (tonnes) = pounds × 0.00045359237 — reverse: pounds = metric tons (tonnes) × 2204.622622
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 = 0.00226796 t
- 12.5 lb = 0.0056699 t
- 100 lb = 0.0453592 t
Pounds to metric tons (tonnes) conversion table
| Pounds (lb) | Metric tons (tonnes) (t) |
|---|---|
| 1 | 0.000453592 |
| 2 | 0.000907185 |
| 3 | 0.00136078 |
| 4 | 0.00181437 |
| 5 | 0.00226796 |
| 6 | 0.00272155 |
| 7 | 0.00317515 |
| 8 | 0.00362874 |
| 9 | 0.00408233 |
| 10 | 0.00453592 |
| 15 | 0.00680389 |
| 20 | 0.00907185 |
| 25 | 0.0113398 |
| 30 | 0.0136078 |
| 40 | 0.0181437 |
| 50 | 0.0226796 |
| 75 | 0.0340194 |
| 100 | 0.0453592 |
| 200 | 0.0907185 |
| 250 | 0.113398 |
| 500 | 0.226796 |
| 1000 | 0.453592 |
FAQ
How many metric tons (tonnes) are in one pound?
1 lb = 0.000453592 t. 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 metric tons (tonnes)?
Multiply the value in pounds by 0.00045359237: metric tons (tonnes) = pounds × 0.00045359237. For example, 5 lb = 0.00226796 t.
How do I convert metric tons (tonnes) back to pounds?
Multiply by the inverse factor 2204.622622 (pounds = metric tons (tonnes) × 2204.622622), or use the metric tons (tonnes)-to-pounds page.
Related conversions
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=lb&to_unit=t - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"lb","to_unit":"t"} - Markdown: https://tttkmbb.com/conversion/lbs-to-tonnes.md · JSON: https://tttkmbb.com/conversion/lbs-to-tonnes.json (add
?value=for a result) · Units: /api/v1/units?quantity=mass - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.