At One Place

Ounces to tonnes

1 ounce in tonnes
1 oz = 0.00002835 t
t = oz × 0.000028349523

To convert ounces to tonnes, multiply by 0.000028349523. The table below gives the values people look up most often, and the converter works for any number.

Ounces to tonnes table

Common ounce values converted to tonnes.
Ounces Tonnes
1 oz 0.00002835
2 oz 0.0000567
3 oz 0.00008505
4 oz 0.0001134
5 oz 0.0001417
10 oz 0.0002835
15 oz 0.0004252
20 oz 0.000567
25 oz 0.0007087
30 oz 0.0008505
40 oz 0.001134
50 oz 0.0014175
75 oz 0.0021262
100 oz 0.002835
250 oz 0.0070874
500 oz 0.014175
1,000 oz 0.02835

How the conversion works

The relationship is t = oz × 0.000028349523. 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 ounce?
One ounce equals 0.00002835 tonnes. t = oz × 0.000028349523.
How do you convert ounces to tonnes?
Use t = oz × 0.000028349523. So 10 oz is 0.0002835 t.
How many ounces are in one tonne?
One tonne equals 35,273.962 ounces, 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