---
title: "Pounds to Tonnes — lb to t converter"
description: "1 pound = 0.0004536 tonnes. Convert pounds to tonnes with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/lbs-to-tonnes/
site: "At One Place"
---

# Pounds to tonnes

**1 pound in tonnes: 1 lb = 0.0004536 t**

t = lb × 0.00045359237

To convert pounds to tonnes, multiply by 0.00045359237. The table below gives the values people look up most often, and the converter works for any number.

## Pounds to tonnes table

*Common pound values converted to tonnes.*

| Pounds | Tonnes |
| --- | --- |
| 1 lb | 0.0004536 |
| 2 lb | 0.0009072 |
| 3 lb | 0.0013608 |
| 4 lb | 0.0018144 |
| 5 lb | 0.002268 |
| 10 lb | 0.0045359 |
| 15 lb | 0.0068039 |
| 20 lb | 0.0090718 |
| 25 lb | 0.01134 |
| 30 lb | 0.013608 |
| 40 lb | 0.018144 |
| 50 lb | 0.02268 |
| 75 lb | 0.034019 |
| 100 lb | 0.045359 |
| 250 lb | 0.1134 |
| 500 lb | 0.2268 |
| 1,000 lb | 0.45359 |

## How the conversion works

The relationship is t = lb × 0.00045359237. Both units measure mass, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

> Tonne: Also called a metric ton.

## Common questions

### How many tonnes are in one pound?

One pound equals 0.0004536 tonnes. t = lb × 0.00045359237.

### How do you convert pounds to tonnes?

Use t = lb × 0.00045359237. So 10 lb is 0.0045359 t.

### How many pounds are in one tonne?

One tonne equals 2,204.6226 pounds, which is the reverse of the conversion above.

### Is there more than one kind of tonne?

Also called a metric ton.

## Related pages

- [Tonnes to Pounds](https://atoneplace.net/convert/tonnes-to-lbs/)
- [Pounds to Kilograms](https://atoneplace.net/convert/lbs-to-kg/)
- [Pounds to Grams](https://atoneplace.net/convert/lbs-to-grams/)
- [Pounds to Milligrams](https://atoneplace.net/convert/lbs-to-mg/)
- [Pounds to Ounces](https://atoneplace.net/convert/lbs-to-oz/)
- [Pounds to Stone](https://atoneplace.net/convert/lbs-to-stone/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)