---
title: "Megabits to Petabytes — Mb to PB converter"
description: "1 megabit = 1.25 × 10^-10 petabytes. Convert megabits to petabytes with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/megabits-to-pb/
site: "At One Place"
---

# Megabits to petabytes

**1 megabit in petabytes: 1 Mb = 1.25 × 10^-10 PB**

PB = Mb × 1.25 × 10^-10

To convert megabits to petabytes, multiply by 1.25 × 10^-10. The table below gives the values people look up most often, and the converter works for any number.

## Megabits to petabytes table

*Common megabit values converted to petabytes.*

| Megabits | Petabytes |
| --- | --- |
| 1 Mb | 1.25 × 10^-10 |
| 2 Mb | 2.5 × 10^-10 |
| 3 Mb | 3.75 × 10^-10 |
| 4 Mb | 5 × 10^-10 |
| 5 Mb | 6.25 × 10^-10 |
| 10 Mb | 1.25 × 10^-9 |
| 15 Mb | 1.875 × 10^-9 |
| 20 Mb | 2.5 × 10^-9 |
| 25 Mb | 3.125 × 10^-9 |
| 30 Mb | 3.75 × 10^-9 |
| 40 Mb | 5 × 10^-9 |
| 50 Mb | 6.25 × 10^-9 |
| 75 Mb | 9.375 × 10^-9 |
| 100 Mb | 1.25 × 10^-8 |
| 250 Mb | 3.125 × 10^-8 |
| 500 Mb | 6.25 × 10^-8 |
| 1,000 Mb | 1.25 × 10^-7 |

## How the conversion works

The relationship is PB = Mb × 1.25 × 10^-10. Both units measure data, so the conversion is a fixed factor that never changes.

## Common questions

### How many petabytes are in one megabit?

One megabit equals 1.25 × 10^-10 petabytes. PB = Mb × 1.25 × 10^-10.

### How do you convert megabits to petabytes?

Use PB = Mb × 1.25 × 10^-10. So 10 Mb is 1.25 × 10^-9 PB.

### How many megabits are in one petabyte?

One petabyte equals 8,000,000,000 megabits, which is the reverse of the conversion above.

## Related pages

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