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

# Petabytes to megabits

**1 petabyte in megabits: 1 PB = 8,000,000,000 Mb**

Mb = PB × 8,000,000,000

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

## Petabytes to megabits table

*Common petabyte values converted to megabits.*

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

## How the conversion works

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

## Common questions

### How many megabits are in one petabyte?

One petabyte equals 8,000,000,000 megabits. Mb = PB × 8,000,000,000.

### How do you convert petabytes to megabits?

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

### How many petabytes are in one megabit?

One megabit equals 1.25 × 10^-10 petabytes, which is the reverse of the conversion above.

## Related pages

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