How many photos fit on this card?
Divide usable card bytes by average photo size. JPEG and RAW averages differ by a factor of five or more, so pick a realistic MB per shot.
How to use the How many photos fit on this card?
What does the How many photos fit on this card? do?
Estimate how many photos fit on a memory card from card size and average file size; It applies this page-specific rule: a “64GB” card is 64 × 10⁹ bytes on the label (sometimes sold with a little less formatted).
Which inputs does this tool use?
To estimate how many photos fit on a memory card from card size and average file size, enter Card size (GB), Average photo (MB); keep every value in the same example; select 32 GB when the values are ready; Start with a familiar case covered by this rule - Typical ballparks, not laws: 12 MP JPEG ~3–5 MB, 24 MP JPEG ~6–10 MB, 24 MP RAW ~25–45 MB, 45 MP RAW ~50–80 MB - so the expected result can confirm the settings.
How should the tool result be read?
For a result intended to estimate how many photos fit on a memory card from card size and average file size, typical ballparks, not laws: 12 MP JPEG ~3–5 MB, 24 MP JPEG ~6–10 MB, 24 MP RAW ~25–45 MB, 45 MP RAW ~50–80 MB; read average photo (mb) together with the original card size (gb) rather than as an isolated answer, and confirm that its units or structure match the intended use.
Why do two 24 MP cameras differ?
When the goal is to estimate how many photos fit on a memory card from card size and average file size, compression, bit depth and whether RAW is compressed.
Is the card really 64 billion bytes?
When using the page to estimate how many photos fit on a memory card from card size and average file size, usually that is what the box means.
Limits and accuracy
When using this tool to estimate how many photos fit on a memory card from card size and average file size, video on the same card is a different calculator (minutes × bitrate); check the result in its intended destination before relying on it for important work; keep card size (gb) until the output has been checked in its intended destination.
How this works
A “64GB” card is 64 × 10⁹ bytes on the label (sometimes sold with a little less formatted). This page lets you treat the number as decimal GB. Formatting and folders will eat a sliver; treat the result as a ceiling.
Typical ballparks, not laws: 12 MP JPEG ~3–5 MB, 24 MP JPEG ~6–10 MB, 24 MP RAW ~25–45 MB, 45 MP RAW ~50–80 MB. If you shoot RAW+JPEG, add both.
Video on the same card is a different calculator (minutes × bitrate).
Frequently asked questions
Why do two 24 MP cameras differ?
Compression, bit depth and whether RAW is compressed.
Is the card really 64 billion bytes?
Usually that is what the box means. Windows may show ~59.6 GiB.
Burst shooting?
Same average size × count. Buffer speed is unrelated.