파일 크기 변환기
바이트, KB, MB, GB, TB, PB 간을 변환하세요. 1024 기반 단위가 필요할 때는 2진수(KiB, MiB, GiB)로 전환하세요.
- 0 MB0 B
- 0 MB0 KB
- 0 MB0 GB
- 0 MB0 TB
- 0 MB0 PB
About the file size converter
A file size converter turns one unit of digital storage into another — bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes. Type a number, pick its unit, and every other unit updates at once, so you can tell at a glance whether a 4,200 MB export fits under a 5 GB upload limit.
It handles both bases, because storage makers and operating systems disagree. Decimal units (KB, MB, GB) step by 1,000; binary units (KiB, MiB, GiB) step by 1,024 — which is why a “1 TB” drive shows up as 931 GB in Windows. Switch the base to see either answer. Everything runs in your browser, free and without an account.
How to convert a file size
- 1
Enter a size
Type any number and choose the unit it's in, from bytes to petabytes. You can also pick a file to read its exact size.
- 2
Pick decimal or binary
Stay on decimal (1,000) for storage and upload limits, or switch to binary (1,024) to match what Windows and macOS report.
- 3
Read every unit at once
The full table updates as you type, with a plain-language comparison so the number actually means something.
What the converter does
Every unit, both bases
Bytes to petabytes in decimal (1,000) and binary (1,024), converted the moment you type.
Instant results
No convert button — the whole table recalculates on every keystroke.
Measure a real file
Pick a file from your device to see its exact byte count instead of a rounded figure.
Nothing is uploaded
Files are measured in your browser. They never leave your device.
Free, no signup
No account, no limits, no watermark.
Works on any device
Phone, tablet, or desktop — the same converter in any modern browser.
Related tools
More free utilities. No signup, and nothing you drop in is uploaded.
FAQ
File size questions, answered.
The units, the two bases, and why your drive seems smaller than the box said.
보낼 것이 있으신가요?
무료로 보내세요.
무료 플랜에서 전송당 최대 5 GB. 회원가입 불필요, 몇 초 만에 링크 생성.