How many photos fit on a 64GB card?

It depends on your camera and settings. A 24MP camera shooting RAW+JPEG (14-bit lossless) produces roughly 32MB per shot, fitting about 1,880 photos on a 64GB card. Shooting JPEG fine only, you get around 7,250 photos. These figures use the card’s full advertised capacity; usable space is a few percent lower after formatting.

Does RAW bit depth affect file size much?

Yes. 14-bit RAW files are about 17% larger than 12-bit files. A 24MP camera produces roughly 24MB per 14-bit lossless RAW versus about 21MB per 12-bit file. Over a full card, this difference adds up significantly.

Should I shoot lossless or lossy RAW compression?

Lossless compression reduces file size by about 40% with no quality loss. Lossy compression reduces size by about 55% with very minor quality differences that are invisible in most situations. Uncompressed RAW files are the largest.

How much video time does a memory card hold?

At 4K 100Mbps, a 64GB card holds about 85 minutes of video. Higher bitrates (400Mbps for 8K or ProRes) fill cards much faster. Always carry spare cards for video work.

PhotoCalcs

Memory Card Calculator — Photos per Card

Calculate how many photos fit on a memory card at your camera settings.

Card CapacityNominal card size as printed on the card; usable space is a few percent less after formatting

File FormatCapture format: JPEG is smallest, RAW+JPEG largest

Camera Megapixels

Camera resolution in megapixels

RAW Bit DepthRAW capture bit depth per pixel; 14-bit holds more tonal data and files are ~17% larger than 12-bit

How We Calculate This

Calculation Method

RAW size = Megapixels × 1M × (Bit depth / 8) × Compression factor
JPEG size = Megapixels × 0.35MB (fine) or 0.2MB (normal)
Photos = Card capacity / Average file size
Video time = Card capacity / Bitrate (4K at 100Mbps)
Card capacity uses the advertised decimal size (1 GB = 1,000,000,000 bytes)

Frequently Asked Questions

Last updated: March 2026

All calculations are estimates based on standard optical and photographic formulas. Results may vary with specific equipment.