Photo File Size Calculator
Estimate RAW/JPEG size from megapixels and bit depth.
Inputs
Results
Estimating RAW size
Uncompressed RAW stores roughly megapixels × bit depth / 8 bytes per frame. Lossless compression often shrinks that by ~30–50% depending on scene detail.
FAQ
Why is actual file size different?
Compression, sensor readout, dual-gain modes and manufacturer headers all vary. Treat this as a planning estimate, then check a real file from your camera.
Card and drive planning
Multiply estimated file size by expected frame count, including bursts and brackets. Wedding and sports shooters should add a margin for higher JPEG quality or unexpected RAW bursts. Clear cards only after backups; this size estimate helps choose whether a 64 GB or 128 GB card is the right daily unit.