Megabytes to Mebibytes Converter
Enter megabytes and instantly see the exact mebibyte value — plus the reverse MiB to MB conversion.
MB to MiB Converter
MB
MiB
MB (SI): 1 MB = 1,000,000 bytes.
MiB (IEC): 1 MiB = 1,048,576 bytes (220).
Formula: MiB = MB × 1,000,000 ÷ 1,048,576
Result — Mebibytes (IEC Binary)
MiB
Reverse — Megabytes (SI Decimal)
MB
Enter a value above to see the result
Common File Sizes
| File type | MB | MiB |
|---|
Summary
Enter megabytes and instantly see the exact mebibyte value — plus the reverse MiB to MB conversion.
How it works
- Enter a megabyte value; the converter multiplies by 1,000,000 to get bytes.
- Bytes are divided by 1,048,576 to produce the mebibyte result.
- The reverse field accepts MiB and multiplies by 1,048,576 ÷ 1,000,000 to get MB.
- Results are shown with full floating-point precision.
- A reference table lists common file sizes in both MB and MiB.
Use cases
- Reconcile storage capacity shown in MB (by drive manufacturers) with OS displays in MiB.
- Convert RAM or firmware sizes from megabytes to mebibytes for embedded system specs.
- Understand why a 500 MB file appears as ~476.8 MiB on Linux or macOS.
- Cross-check data transfer sizes when switching between SI and IEC units.
- Teach or study the decimal-to-binary gap between MB and MiB definitions.
Frequently Asked Questions
Last updated: 2026-07-23 ·
Reviewed by Nham Vu