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Image File Size Estimate — result sheet
Estimate uncompressed image storage from pixel dimensions, bits per channel, channel count, and a compression ratio.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Raw bytes = width×height×bits per channel×channels/8; estimated stored bytes = raw bytes/compression ratio.
The estimate exposes pixel and channel assumptions and reports decimal megabytes for straightforward storage planning.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Image width — pixels; minimum 1; maximum 1000000
- Image height — pixels; minimum 1; maximum 1000000
- Bits per channel — bits; minimum 1; maximum 256
- Channels — minimum 1; maximum 16
- Compression ratio — minimum 1.0E-6; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Image width | 4000 |
| Image height | 3000 |
| Bits per channel | 8 |
| Channels | 3 |
| Compression ratio | 1 |
Estimated size = 36 MB.
Assumptions and limits
- Dimensions and channel count are positive whole numbers; bit depth and compression ratio are positive.
- Compression ratio is raw-size divided by stored-size.
- Headers, metadata, chroma subsampling, palettes, progressive encoding, and filesystem overhead are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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