---
title: "Gigabytes to Megabits — GB to Mb converter"
description: "1 gigabyte = 8,000 megabits. Convert gigabytes to megabits with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/gb-to-megabits/
site: "At One Place"
---

# Gigabytes to megabits

**1 gigabyte in megabits: 1 GB = 8,000 Mb**

Mb = GB × 8,000

To convert gigabytes to megabits, multiply by 8,000. The table below gives the values people look up most often, and the converter works for any number.

## Gigabytes to megabits table

*Common gigabyte values converted to megabits.*

| Gigabytes | Megabits |
| --- | --- |
| 1 GB | 8,000 |
| 2 GB | 16,000 |
| 3 GB | 24,000 |
| 4 GB | 32,000 |
| 5 GB | 40,000 |
| 10 GB | 80,000 |
| 15 GB | 120,000 |
| 20 GB | 160,000 |
| 25 GB | 200,000 |
| 30 GB | 240,000 |
| 40 GB | 320,000 |
| 50 GB | 400,000 |
| 75 GB | 600,000 |
| 100 GB | 800,000 |
| 250 GB | 2,000,000 |
| 500 GB | 4,000,000 |
| 1,000 GB | 8,000,000 |

## How the conversion works

The relationship is Mb = GB × 8,000. Both units measure data, so the conversion is a fixed factor that never changes.

## Common questions

### How many megabits are in one gigabyte?

One gigabyte equals 8,000 megabits. Mb = GB × 8,000.

### How do you convert gigabytes to megabits?

Use Mb = GB × 8,000. So 10 GB is 80,000 Mb.

### How many gigabytes are in one megabit?

One megabit equals 0.000125 gigabytes, which is the reverse of the conversion above.

## Related pages

- [Megabits to Gigabytes](https://atoneplace.net/convert/megabits-to-gb/)
- [Gigabytes to Bytes](https://atoneplace.net/convert/gb-to-bytes/)
- [Gigabytes to Kilobytes](https://atoneplace.net/convert/gb-to-kb/)
- [Gigabytes to Megabytes](https://atoneplace.net/convert/gb-to-mb/)
- [Gigabytes to Terabytes](https://atoneplace.net/convert/gb-to-tb/)
- [Gigabytes to Bits](https://atoneplace.net/convert/gb-to-bits/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)