---
title: "Terabytes to Petabytes — TB to PB converter"
description: "1 terabyte = 0.001 petabytes. Convert terabytes to petabytes with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/tb-to-pb/
site: "At One Place"
---

# Terabytes to petabytes

**1 terabyte in petabytes: 1 TB = 0.001 PB**

PB = TB × 0.001

To convert terabytes to petabytes, multiply by 0.001. The table below gives the values people look up most often, and the converter works for any number.

## Terabytes to petabytes table

*Common terabyte values converted to petabytes.*

| Terabytes | Petabytes |
| --- | --- |
| 1 TB | 0.001 |
| 2 TB | 0.002 |
| 3 TB | 0.003 |
| 4 TB | 0.004 |
| 5 TB | 0.005 |
| 10 TB | 0.01 |
| 15 TB | 0.015 |
| 20 TB | 0.02 |
| 25 TB | 0.025 |
| 30 TB | 0.03 |
| 40 TB | 0.04 |
| 50 TB | 0.05 |
| 75 TB | 0.075 |
| 100 TB | 0.1 |
| 250 TB | 0.25 |
| 500 TB | 0.5 |
| 1,000 TB | 1 |

## How the conversion works

The relationship is PB = TB × 0.001. Both units measure data, so the conversion is a fixed factor that never changes.

## Common questions

### How many petabytes are in one terabyte?

One terabyte equals 0.001 petabytes. PB = TB × 0.001.

### How do you convert terabytes to petabytes?

Use PB = TB × 0.001. So 10 TB is 0.01 PB.

### How many terabytes are in one petabyte?

One petabyte equals 1,000 terabytes, which is the reverse of the conversion above.

## Related pages

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