Estimate a photo's file size from resolution, bit depth and compression.
Multiplying pixel count by bit depth gives the uncompressed data, which compression then shrinks to the stored file size. Estimating file size predicts storage needs, upload times and how many photos fit a memory card.
Image File Size
Raw bytes = W x H x bit depth / 8; file = raw x compression
Raw bytes = W x H x bit depth / 8; file = raw x compression Multiplying pixel count by bit depth gives the uncompressed data, which compression then shrinks to the stored file size.
Estimating file size predicts storage needs, upload times and how many photos fit a memory card.
This calculator takes 4 inputs: Pixel width, Pixel height, Bit depth, Compression factor. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.