CALCULATORS & CONVERTERS
Data Storage Converter — Bytes, KB, MB, GB, TB
Convert digital storage between bytes, KB, MB, GB, and TB, in both binary (1024) and decimal (1000) units. Runs in your browser, no signup.
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1 Byte = 0.000001 Megabyte
Convert a storage amount across bytes, kilobytes, megabytes, gigabytes, and terabytes — for sizing a backup, comparing cloud tiers, or reading a byte count from a log.
Storage has two competing conventions and both are in daily use. The table shows exactly how each step is defined so you can pick the one that matches your figure.
Binary vs decimal, step by step
| Unit | Binary (1024-based) | Decimal (1000-based) |
|---|---|---|
| 1 KB | 1,024 bytes (1 KiB) | 1,000 bytes |
| 1 MB | 1,024 KB (1,048,576 bytes) | 1,000 KB (1,000,000 bytes) |
| 1 GB | 1,024 MB (≈ 1.074 billion bytes) | 1,000 MB (1 billion bytes) |
| 1 TB | 1,024 GB | 1,000 GB |
This is why a '1 TB' drive (decimal) shows as about 931 GB in an operating system that counts in binary — same bytes, different labelling.
Frequently asked questions
- What is the difference between GB and GiB?
- GB in the strict SI sense is 1,000,000,000 bytes (decimal); GiB (gibibyte) is 1,073,741,824 bytes (binary, 1024³). Everyday speech says 'GB' for both, which is the root of most confusion.
- Which convention should I use?
- Decimal (1000) to match advertised capacity or an SI figure; binary (1024) to match what your operating system, RAM, or file manager reports. When unsure, convert both and see which matches your reference number.
- Is my input sent to a server?
- No. It is arithmetic in your browser, so nothing is uploaded and it works offline once the page has loaded.