MB to KB Converter
Convert MB, KB, MiB, and KiB instantly, then move straight into exact image compression when a portal asks for a specific file size.
MB to KB Converter
Decimal rule: 1 MB = 1000 KB.
Binary rule: 1 MiB = 1024 KiB.
Popular examples
How to use the converter
1. Enter a value
Type the size you want to convert, such as 1, 1.1, or 500.
2. Choose units
Switch between MB, KB, MiB, and KiB depending on whether the requirement is decimal or binary.
3. Copy the result
Use the converted number as a reference, then compress your photo to the required KB if needed.
Need to compress an image after converting?
Use the exact KB tool below to turn the number you calculated into a ready-to-upload JPG.
Converter FAQ
Is 1 MB equal to 1000 KB or 1024 KB?
For decimal storage units, 1 MB equals 1000 KB. Binary units use MiB and KiB, where 1 MiB equals 1024 KiB.
What is 1.1 MB in KB?
In decimal units, 1.1 MB equals 1100 KB.
Why does a website still reject my file after conversion?
A converter only tells you the size relationship. If you need a photo under a specific limit, use the exact KB image compressor on this site.
More exact KB pages
Switch between the converter and common upload targets without searching again.
20KB photo
Start with 20KB prefilled and compress a photo for common upload limits.
50KB photo
Start with 50KB prefilled and compress a photo for common upload limits.
100KB photo
Start with 100KB prefilled and compress a photo for common upload limits.
200KB photo
Start with 200KB prefilled and compress a photo for common upload limits.
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