How to use this calculator
Estimate how GIF dimensions, frame count, and color depth can affect file size before exporting.
How the calculation works
- Enter width, height, frame count, and color count.
- Choose a rough compression ratio.
- The tool estimates raw indexed-color size and compressed output.
Formula
Raw bytes = width x height x frames x bits per pixel / 8.
Example
A 480 x 270 GIF with 60 frames and 256 colors is about 7.8 MB before compression.
Understanding your result
Use the output as a practical starting point, then review it before using it in an important workflow.
Assumptions and limitations
- Real GIF size depends heavily on motion, palette choices, dithering, and encoder behavior.
- This calculator does not process or upload GIF files.
Frequently asked questions
Does this require an account?
No. The core tool works without creating a Tool2Do account.
Is my input included in share links or analytics?
No. Tool2Do share actions use the tool page URL and safe metadata, not private values or uploaded files.