Grams to Gigatonnes Converter

1 gram (g) equals 1 × 10-15 gigatonnes (Gt).

1 gram = 1 × 10-15 gigatonnes

How to convert grams to gigatonnes

Gt = g × 1 × 10-15

To convert grams to gigatonnes, multiply the number of grams by 1 × 10-15.

Example: 4 g to Gt

  1. Start with the value in grams: 4 g.
  2. Multiply by 1 × 10-15: 4 × 1 × 10-15 = 4 × 10-15.
  3. Result: 4 grams = 4 × 10-15 gigatonnes.

Going the other way, 1 gigatonne = 1,000,000,000,000,000 grams, so to convert gigatonnes back to grams you divide by the same number. See gigatonnes to grams.

Grams to gigatonnes conversion table

Grams (g)Gigatonnes (Gt)
1 g 1 × 10-15 Gt
2 g 2 × 10-15 Gt
3 g 3 × 10-15 Gt
4 g 4 × 10-15 Gt
5 g 5 × 10-15 Gt
6 g 6 × 10-15 Gt
7 g 7 × 10-15 Gt
8 g 8 × 10-15 Gt
9 g 9 × 10-15 Gt
10 g 1 × 10-14 Gt
100 g 1 × 10-13 Gt

What is a gram?

The gram is a metric unit of mass equal to one thousandth of a kilogram.

More about grams →

What is a gigatonne?

The gigatonne is one billion metric tons, the unit of global climate figures: humanity emits about 37 Gt of CO₂ a year from fossil fuels, and Greenland loses roughly 270 Gt of ice a year.

More about gigatonnes →

Frequently asked questions

How many gigatonnes are in a gram?

One gram is 1e-15 gigatonnes.

How many grams are in a gigatonne?

One gigatonne is 1e15 grams.

What is the formula to convert grams to gigatonnes?

Gt = g × 1 × 10^-15.