How many photos fit on this SD card?

Card sizes are marketed in decimal gigabytes; cameras write bigger files than you think. Pick both for the honest photo count.

Enter your setup

Your card

Card sizeMarketed size.

Your files

Photo formatAverage file size.

Use positive measurements and valid numbers.

PHOTO · STORAGE

Photos that fit

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Do you need more card space?

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Hand-picked for this exact result — no generic lists.

Usable space ≈ 93% of the marketed size; file sizes are averages.

Know your real file size.
Check a few files from your camera — yours may run bigger.
RAW+JPEG halves the count.
Shooting both? Divide the result by two.
Carry a spare.
Cards fail. A second card is cheaper than a lost shoot.
Format in-camera.
Format the card in the camera, not the computer, for reliability.

One concrete case, with the assumptions spelled out.

119 GB usable ÷ 30 MB gives about 3,960 photos — JPEG would give ~9,900.

ƒ(x)photos = floor(card GB × 930 ÷ MB per photo)