Image File Size Calculator
Estimate raw pixel data, typical compressed size, and batch total using image dimensions, output format, quality, and quantity.
Enter image settings to estimate file size.
Format-aware estimate
Compare typical JPG, WebP, PNG, and raw RGBA size ranges.
Quality adjustment
See how a quality setting can influence compressed photo estimates.
Batch total
Estimate storage for one image or thousands of similarly sized files.
Wie es funktioniert
- 1
Enter dimensions
Set the expected pixel width and height.
- 2
Choose export settings
Select format, quality, and the number of images.
- 3
Download estimate
Save the calculation assumptions and results.
Why actual image sizes vary
Compression depends heavily on image detail, noise, transparency, metadata, and encoder settings. This calculator is for planning, not an exact prediction. Photos often compress better than noisy screenshots; flat graphics can compress efficiently as PNG.
Häufig gestellte Fragen
Is the estimate exact?
No. Actual encoded sizes can differ substantially based on image content and encoder.
What is raw RGBA size?
It is width multiplied by height multiplied by four bytes per pixel.
Does this calculator upload a file?
No file is required; it calculates from your settings.
Image File Size Calculator last reviewed: Aug 12, 2026.