Image Size Calculator

Formula

width×height×bits÷8÷1e6

Worked example

1000×1000×24-bit — 3MB

Quick answer

What does the Image Size Calculator do?

Estimate uncompressed raster image size from dimensions and bits per pixel.

What is the Image Size Calculator?

Estimate uncompressed raster image size from dimensions and bits per pixel. Use it when you have the required inputs and want a deterministic, repeatable result with the calculation method visible.

How to use this calculator

Enter the values requested by the tool, keep units and time periods consistent, resolve any validation message, calculate, then review the primary answer together with the displayed formula and supporting values.

Formula and method

This calculator uses the deterministic formula width×height×bits÷8÷1e6. Enter the required values, then review the displayed substitution and result breakdown to verify the calculation.

Worked example

1000×1000×24-bit 3MB

Common mistakes to avoid

Check units, decimal points, percentages, signs, date/time order, selector choices, and rounding. For important decisions, verify the result against an independent source or qualified professional when appropriate.