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Unit Converters

Tonnes to Milligrams Converter

Convert tonnes (t) to milligrams (mg) instantly. 1 t = 1,000,000,000 mg.

Free, no sign-upPrivate — runs in your browserUpdated October 2026
1 t = 1,000,000,000 mg

In all weight & mass units

Milligram1,000,000,000 mg
Gram1,000,000 g
Kilogram1,000 kg
Tonne (metric ton)1 t
Ounce35,273.96195 oz
Pound2,204.622622 lb
Stone157.4730444 st
US ton (short ton)1.102311311 ton
Carat5,000,000 ct

How to convert tonnes to milligrams

Multiply the value in tonnes by 1,000,000,000 to get milligrams.

1 t = 1,000,000,000 mg

Example

To convert 10 tonnes to milligrams: 10 × 1,000,000,000 = 10,000,000,000 mg.

t to mg conversion chart

Tonnes (t)Milligrams (mg)
0.1 t100,000,000 mg
0.25 t250,000,000 mg
0.5 t500,000,000 mg
1 t1,000,000,000 mg
2 t2,000,000,000 mg
3 t3,000,000,000 mg
4 t4,000,000,000 mg
5 t5,000,000,000 mg
6 t6,000,000,000 mg
7 t7,000,000,000 mg
8 t8,000,000,000 mg
9 t9,000,000,000 mg
10 t10,000,000,000 mg
12 t12,000,000,000 mg
15 t15,000,000,000 mg
20 t20,000,000,000 mg
25 t25,000,000,000 mg
30 t30,000,000,000 mg
40 t40,000,000,000 mg
50 t50,000,000,000 mg
75 t75,000,000,000 mg
100 t100,000,000,000 mg
250 t250,000,000,000 mg
500 t500,000,000,000 mg
1,000 t1,000,000,000,000 mg

About the units

Tonne (metric ton) (t)

A tonne (metric ton) equals 1,000 kilograms.

Milligram (mg)

A milligram is one thousandth of a gram, used for medicine doses and nutrients.

Related conversions

Milligrams to tonnes · Grams to milligrams · Kilograms to milligrams · Tonnes to grams · Tonnes to kilograms · Tonnes to ounces · Tonnes to pounds · Tonnes to stone · Ounces to milligrams · Pounds to milligrams · Stone to milligrams · All weight & mass units

Frequently asked questions

How many milligrams are in a tonne (metric ton)?

There are 1,000,000,000 milligrams in one tonne (metric ton). Multiply any value in tonnes by 1,000,000,000 to convert it to milligrams.

What is 10 t in mg?

10 tonnes equals 10,000,000,000 milligrams.

How do I convert milligrams back to tonnes?

Multiply by 1e-9, since 1 mg = 1e-9 t. You can also use our milligrams to tonnes converter.

What is a tonne (metric ton)?

A tonne (metric ton) equals 1,000 kilograms.