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

# Gigabytes to megabytes

**1 gigabyte in megabytes: 1 GB = 1,000 MB**

MB = GB × 1,000

To convert gigabytes to megabytes, multiply by 1,000. The table below gives the values people look up most often, and the converter works for any number.

## Gigabytes to megabytes table

*Common gigabyte values converted to megabytes.*

| Gigabytes | Megabytes |
| --- | --- |
| 1 GB | 1,000 |
| 2 GB | 2,000 |
| 3 GB | 3,000 |
| 4 GB | 4,000 |
| 5 GB | 5,000 |
| 10 GB | 10,000 |
| 15 GB | 15,000 |
| 20 GB | 20,000 |
| 25 GB | 25,000 |
| 30 GB | 30,000 |
| 40 GB | 40,000 |
| 50 GB | 50,000 |
| 75 GB | 75,000 |
| 100 GB | 100,000 |
| 250 GB | 250,000 |
| 500 GB | 500,000 |
| 1,000 GB | 1,000,000 |

## How the conversion works

The relationship is MB = GB × 1,000. Both units measure data, so the conversion is a fixed factor that never changes.

> Megabyte: Decimal: 1,000,000 bytes.

## Common questions

### How many megabytes are in one gigabyte?

One gigabyte equals 1,000 megabytes. MB = GB × 1,000.

### How do you convert gigabytes to megabytes?

Use MB = GB × 1,000. So 10 GB is 10,000 MB.

### How many gigabytes are in one megabyte?

One megabyte equals 0.001 gigabytes, which is the reverse of the conversion above.

### Is there more than one kind of megabyte?

Decimal: 1,000,000 bytes.

## Related pages

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

## 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/)