Image File Size Calculator

Estimate how large an image will be for given dimensions and format.

Width

Height

Colour depth

Uncompressed (BMP/TIFF)

34.3 MB

JPG high quality

≈ 5.7 MB

JPG medium

≈ 2.9 MB

JPG low

≈ 1.4 MB

JPG sizes are typical estimates — detailed photos compress less than plain graphics. Try Compress Image for the real number.

How to use Image File Size Calculator

1Enter your values — results update instantly as you type.
2Adjust any setting to compare options.
3Copy or download the result. Nothing is sent to a server.

About this tool

Estimate how large an image will be for given dimensions and format. It works instantly in your browser with nothing to install. It's part of our free calculators, which work together — you can pass the result straight into related tools below.

Frequently asked questions

Is Image File Size Calculator free?

Yes. There's no sign-up, no watermark and no usage limit.

Is my data stored?

No. Everything is calculated in your browser and nothing is sent to a server.

Does it work on mobile and offline?

Yes. It works in any modern browser on phones, tablets and computers, and keeps working offline once the page has loaded.