Gigaton to Megaton Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert gigatons [Gt] to megatons [Mt] or megatons [Mt] to gigatons [Gt]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 gigaton [Gt] = 1,000 megatons [Mt]1 megaton [Mt] = 0.001 gigatons [Gt]

Convert gigatons to megatons

There are two simple ways to convert gigatons [Gt] to megatons [Mt]. In the first calculation method, the value in gigatons [Gt] is divided by 0.001. The second method multiplies the value in gigatons [Gt] by 1,000.

  • Megatons [Mt] = gigatons [Gt] ÷ 0.001
  • Megatons [Mt] = gigatons [Gt] * 1,000

Convert megatons to gigatons

Converting megatons [Mt] to gigatons [Gt] is easy and can be done in two ways. The first method involves multiplication, whereby the value in megatons [Mt] is multiplied by 0.001. The second variant is a division. Here, the value in megatons [Mt] is divided by 1,000.

  • Gigatons [Gt] = megatons [Mt] * 0.001
  • Gigatons [Gt] = megatons [Mt] ÷ 1,000

Converter

Decimal places

How it's calculated

Factor: 
1,000
Megatons=Gigatons*1,000
Gigatons=
Megatons1,000

To all available units

Gigatons

Micrograms

Gigatons

Milligrams

Gigatons

Nanograms

Gigatons

Picograms

Gigatons

Pounds