Data Size Calculator
Convert data sizes between bits, bytes, and SI (KB) or IEC (KiB) units. Enter your values, click Calculate, and get the full result with its breakdown — everything is processed on your device, nothing is sent to a server.
All calculations run in your browser. Your data is never sent to our servers.
Example
Example Input
1 GB → MiB
Example Output
953.674…
How to Use
- 1Fill in each input field with the values you want to compute.
- 2If there are choices (units, mode, operation), pick what you need.
- 3Click the Calculate button (or press Ctrl+Enter).
- 4The main result and its breakdown appear in the Result area. Click Copy to copy it.
About the Data Size Calculator
The Data Size Converter changes data sizes across units: bit, byte, KB/KiB, MB/MiB, GB/GiB, TB/TiB, up to PB/PiB. It distinguishes the 1000-based SI units (KB) from the 1024-based IEC units (KiB) that are often confused.
Useful for storage, bandwidth, and file-size calculations.
FAQ
Is this Data Size Calculator accurate?
Yes. It uses standard formulas and runs directly in your browser at full JavaScript precision (plus BigInt/decimal.js for large numbers where needed).
Is my data sent to a server?
No. All calculations happen entirely on your device. No values are sent to or stored on our servers.