# Data Size Unit Converter

Compare decimal byte units with binary byte units.

[Open this tool](https://whatson.pk/developer-bytes-calculator/)

Category: Developer & Data

A megabyte and a mebibyte use different multipliers. Their labels should stay visible during conversion.

Choose the exact source byte unit and compare decimal and binary results.

## Inputs and controls

* Input size. Allowed range: 0 to 1000000000000
* Input unit: Bytes; kB, 1000 bytes; MB, 1000² bytes; GB, 1000³ bytes; KiB, 1024 bytes; MiB, 1024² bytes; GiB, 1024³ bytes

## How to use

* Choose input unit. Enter input size.

* Select Process input. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.


## Why use this tool

Separate unit families help explain differences between download size and displayed storage figures.


## Before relying on the result

This converts bytes, not bits. Results use floating arithmetic and are limited to one quadrillion bytes.


## Tool limitations

This converts bytes, not bits. Results use floating arithmetic and are limited to one quadrillion bytes.

## Questions

### Does this convert transfer speeds or bits?

No. It converts byte amounts. Speed needs a time basis and bit conversion is a separate operation.

### What should I check before using Data Size Unit Converter?

Check Input size and Input unit. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified (UTC): 2026-10-04T16:58:29+00:00

This profile describes the tool. It does not execute it or supply a professional certification.