Gram to Tonne Converter

Type a value — the answer appears instantly. 1 g = 0.000001 t.

Reviewed by the OmniCalc teamMethod verified 2026-07-01

From (grams)

To (tonnes)

Result

0.000001 tonnes

= 0.001 kg= 0.00220462 lb

Formula: t = g × 0.000001

Gram to Tonne formula

t = g × 0.000001

Convert 5 grams to tonnes

Start with 5 grams.
Multiply by the conversion factor: 5 × 0.000001 = 0.000005.
So 5 g = 0.000005 t.

Gram to Tonne conversion table

Gram to Tonne conversion table
Grams (g)	Tonnes (t)
0.01 g	0.00000001 t
0.1 g	0.0000001 t
0.25 g	0.00000025 t
0.5 g	0.0000005 t
1 g	0.000001 t
2 g	0.000002 t
3 g	0.000003 t
4 g	0.000004 t
5 g	0.000005 t
6 g	0.000006 t
7 g	0.000007 t
8 g	0.000008 t
9 g	0.000009 t
10 g	0.00001 t
15 g	0.000015 t
20 g	0.00002 t
25 g	0.000025 t
30 g	0.00003 t
40 g	0.00004 t
50 g	0.00005 t
75 g	0.000075 t
100 g	0.0001 t
250 g	0.00025 t
500 g	0.0005 t
1,000 g	0.001 t
5,000 g	0.005 t
10,000 g	0.01 t

Unit definitions

What is a gram?

The gram is one thousandth of a kilogram and the everyday metric unit for food, cooking, and postage. Nutrition labels, recipes, and letter weights are all given in grams. A standard paperclip weighs about one gram.

What is a tonne?

The tonne, or metric ton, is exactly 1000 kilograms. It is used worldwide for heavy freight, vehicle mass, industrial materials, and carbon-emission accounting. It is distinct from the US short ton and the UK long ton.

Frequently asked questions

How many tonnes are in one gram?

One gram equals 0.000001 tonnes (1 g = 0.000001 t).

How do I convert grams to tonnes?

Multiply the value in grams by 0.000001. For example, 10 g × 0.000001 = 0.00001 t.

Which is bigger — a gram or a tonne?

A tonne is bigger: one tonne contains 1,000,000 grams.

Is this gram to tonne converter free?

Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.

Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.