Convert Pounds to Tonnes
1 pound is 0.0004536 t. One pound is exactly 0.00045359237 tonnes.
One pound is 4.5359 × 10^-4 tonnes. To convert pounds to tonnes, multiply by 4.5359 × 10^-4; to go the other way, divide by 4.5359 × 10^-4 or multiply by 2204.6226. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Handbook 44. Exactly 0.45359237 kilograms by international agreement, and sixteen ounces.
Factor checked against the defining standard · How we check
- Pounds × 4.5359 × 10^-4
1 * 0.00045360 t
1 pound in every weight unit
| Unit | Value | Exact factor |
|---|---|---|
| ounces | 16 oz | × 16 |
| pounds (as entered) | 1 lb | — |
| stone | 0.07142857143 st | × 0.0714285714286 |
| US tons | 0.0005 ton | × 0.0005 |
| micrograms | 453,592,370 mcg | × 453,592,370 |
| milligrams | 453,592.37 mg | × 453,592.37 |
| centigrams | 45,359.237 cg | × 45,359.237 |
| grams | 453.59237 g | × 453.59237 |
| kilograms | 0.45359237 kg | × 0.45359237 |
| slugs | 0.03108095017 slug | × 0.0310809501716 |
| tonnes | 0.00045359237 t | × 0.00045359237 |
| carats | 2,267.96185 ct | × 2,267.96185 |
| troy ounces | 14.58333333 ozt | × 14.5833333333 |
| grains | 7,000 gr | × 7,000 |
| long tons | 0.0004464285714 LT | × 0.000446428571429 |
Factors are entered by hand from NIST Handbook 44 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert pounds to tonnes? The converter and the working
- 1.Take the measurement in pounds.
- 2.Multiply by 4.5359 × 10^-4 — that is how many tonnes fit in one pound.
- 3.To go back the other way, divide by 4.5359 × 10^-4, or multiply by 2204.6226.
Worked example: 25 pounds to tonnes
- Formula
- lb × 4.5359 × 10^-4 = t
- Arithmetic
- 25 × 4.5359 × 10^-4 = 0.01 t
- Answer
- 25 lb = 0.01 t
The factor is rounded for display; the figure above is computed from the full value.
Pounds to tonnes conversion table
| Pounds | Tonnes |
|---|---|
| 1 lb | 0.0004536 t |
| 2 lb | 0.0009072 t |
| 3 lb | 0.001361 t |
| 4 lb | 0.001814 t |
| 5 lb | 0.002268 t |
| 6 lb | 0.002722 t |
| 7 lb | 0.003175 t |
| 8 lb | 0.003629 t |
| 9 lb | 0.004082 t |
| 10 lb | 0.004536 t |
| 12 lb | 0.01 t |
| 15 lb | 0.01 t |
| 20 lb | 0.01 t |
| 25 lb | 0.01 t |
| 50 lb | 0.02 t |
| 100 lb | 0.05 t |
| 200 lb | 0.09 t |
| 300 lb | 0.14 t |
| 500 lb | 0.23 t |
| 1000 lb | 0.45 t |
| 2000 lb | 0.91 t |
| 5000 lb | 2.27 t |
| 10000 lb | 4.54 t |
What is a pound?
Exactly 0.45359237 kilograms by international agreement, and sixteen ounces.
What is a tonne?
One thousand kilograms, also called the metric ton — 2,204.6 pounds.
How many tonnes are in a pound?
One pound is 4.5359 × 10^-4 tonnes. Going the other way, one tonne is 2204.6226 pounds. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every weight unit here
The whole group — 15 units with their symbols and the size of each one in kilograms — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a pound.
Cite this page
- APA
- Rule Calculator. (2026). Convert Pounds to tonnes. Rule Calculator. https://rulecalculators.com/convert/pound-to-tonne
- MLA
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- Chicago
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Questions people actually ask
- How many tonnes are in a pound?
- 4.5359 × 10^-4. One thousand kilograms, also called the metric ton — 2,204.6 pounds.
- How do I convert tonnes back to pounds?
- Divide by 4.5359 × 10^-4, or multiply by 2204.6226 — they are the same operation.
Other weight conversions
Tonnes to pounds — the same conversion the other way.