Memory Card Calculator — How Many Photos Fit on an SD Card?
A memory card calculator converts a card's capacity into shots and recording minutes for your camera's file format — the check before a wedding, holiday or drone flight.
Quick answer: A 64 GB card holds about 8,000 12 MP JPEGs, 1,000 45 MP RAW files or 5 hours of 4K30 video. A 128 GB card doubles those numbers; a 256 GB card quadruples them.
Enter the advertised size or the size your device reports
Use the average size from your own files for a sharper estimate
| Capacity | How many photos |
|---|---|
| 32 GB | 17,777 |
| 64 GB | 35,555 |
| 128 GB | 71,111 |
| 256 GB | 142,222 |
| 512 GB | 284,444 |
| 1 TB | 555,555 |
| 2 TB | 1,111,111 |
| 4 TB | 2,222,222 |
| 32 GB | ≈ 4,000 × 24 MP JPEG · 580 RAW · 1.4 h of 4K30 |
|---|---|
| 64 GB | ≈ 8,000 × 24 MP JPEG · 1,160 RAW · 2.8 h of 4K30 |
| 128 GB | ≈ 16,000 × 24 MP JPEG · 2,300 RAW · 5.7 h of 4K30 |
| Card speed classes | Class 10 / U1 ≈ 10 MB/s · U3 / V30 ≈ 30 MB/s sustained · V60/V90 for 4K/8K |
| Card type matters | SDHC ≤ 32 GB · SDXC 64 GB–2 TB · SDXC usually ships exFAT |
Card size versus card speed
Capacity decides how long you can shoot; speed decides whether the camera can keep up. 4K60 at 200 Mbps needs a V60 card as a minimum and V90 for comfortable headroom, while 1080p50 needs only U3/V30. Buying a huge slow card is a common mistake: the recording stops mid-take even though the space is there.
RAW, JPEG or both
Many cameras write RAW + JPEG simultaneously, roughly doubling per-shot storage. A 45 MP RAW is about 55 MB, its JPEG companion another 15–20 MB, so 1,000 shots is 70 GB rather than 55. If you only deliver JPEGs, switching to RAW-only for keepers is more efficient than recording both for everything.
Travel and event planning
Estimate the shots per session rather than per day: 2,000 shots at a wedding in RAW+JPEG needs about 140 GB, which is one 256 GB card or two 128 GB cards. Two medium cards beat one huge card — a single card failure costs half your day instead of all of it, and you can swap mid-shoot without a laptop.
When to use this calculator
- Choosing the right SD card for a new camera or drone.
- Planning card capacity for a shoot, trip or event.
- Checking whether an existing card survives RAW + JPEG at high frame rates.
- Deciding between two 128 GB cards and one 256 GB card.
- Estimating how many cards a video project needs.