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

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked