Pounds to Tonnes Converter
1 pound = 0.00045359237 tonnes
Distinct from the US short ton (2,000 lb) and the imperial long ton (2,240 lb).
1 pound equals 0.000453592 tonnes
How to convert pounds to tonnes
These units measure mass. Pounds and ounces mean avoirdupois unless the unit explicitly says troy; a fluid ounce measures volume and requires a density to relate it to mass.
t = lb × 0.00045359237One pound is 0.00045359237 tonnes, so a single multiplication converts any value.
0.00453592 t ≈ 10 × 0.00045359237Distinct from the US short ton (2,000 lb) and the imperial long ton (2,240 lb).
Pounds to tonnes conversion table
Common values in pounds, converted to tonnes.
| Pounds (lb) | Tonnes (t) |
|---|---|
| 1 | 0.00045359237 |
| 2 | 0.00090718474 |
| 3 | 0.0013607771 |
| 4 | 0.0018143695 |
| 5 | 0.0022679619 |
| 10 | 0.0045359237 |
| 20 | 0.0090718474 |
| 25 | 0.011339809 |
| 50 | 0.022679619 |
| 100 | 0.045359237 |
| 250 | 0.11339809 |
| 500 | 0.22679619 |
| 1,000 | 0.45359237 |
About these units
poundlb
The avoirdupois pound: exactly 0.45359237 kilograms.
Reference: International Yard and Pound Agreement (1959).
tonnet
The metric ton: exactly 1,000 kilograms.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.