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File Size and Pixel Converter
Forms mix units. Use this page to convert KB, MB and bytes, and to turn cm, mm or inches into pixels.
How to use
- Type a value and pick its unit.
- Read the other units below.
- For pixels, set the DPI. Forms usually use 300 DPI.
1 MB is 1024 KB. To get a photo from 2 MB under 200 KB, use the image compressor.
Questions and answers
How many KB is 1 MB?
1 MB is 1024 KB.
How many pixels is 3.5 cm?
At 300 DPI, 3.5 cm is about 413 pixels.
What DPI should I use?
300 DPI is common for form photos and print. Use 96 for screen sizes.
Is this tool free?
Yes. It is free, needs no sign-up and has no daily limit.