About Photo File Size Calculator
Estimate uncompressed RAW, lossless RAW, and JPEG photo file sizes from sensor megapixels and bit depth, and compute memory card photo storage capacity.
Key Capabilities & Features
- Accurate file size estimation for uncompressed RAW, lossless compressed RAW, and JPEG Fine/Standard
- Selectable bit depth: 12-bit, 14-bit, and 16-bit professional RAW files
- SD memory card capacity estimator for 32GB, 64GB, 128GB, 256GB, and 512GB cards
- Accounts for filesystem overhead and formatting reserves
How to Use Photo File Size Calculator
1
Select Megapixels
Choose your camera sensor resolution (12MP, 24MP, 33MP, 45MP, 61MP).
2
Select Bit Depth
Pick 12-bit, 14-bit, or 16-bit capture depth.
3
Inspect Capacities
Review estimated file sizes and total shots fitting on various SD card sizes.
Privacy & In-Browser Execution Guarantee
100% client-side calculation. Your data stays private in your browser.
Frequently Asked Questions
Why does a 24MP RAW file weigh around 30 to 45 MB?
A 24-megapixel sensor records 24 million photosites. At 14 bits per pixel, uncompressed raw sensor data requires 42 megabytes before lossless compression algorithms are applied.
How many RAW photos fit on a 128GB SD card?
A 128GB card typically holds around 2,500 to 3,200 lossless compressed 24MP RAW files or about 1,800 33MP RAW files.