Memory Card Capacity Calculator
Calculate approximately how many photos or minutes of video fit on a memory card based on capacity and file type/quality preset.
4K Video
Result
Approximate Capacity
341 minutes
How to Use the Memory Card Capacity Calculator
Enter your memory card's capacity in gigabytes and select a file type/quality preset. Each preset uses an illustrative average file size — JPEG and RAW photos are sized per image, while video presets are sized per minute of footage — to estimate roughly how many photos or how many minutes of video will fit on the card.
Capacity = (Card Size in MB) / (Average File Size in MB)
Example
A 128GB memory card (≈128,000 MB) shooting 4K video at an illustrative 375 MB per minute holds about 128,000 / 375 ≈ 341 minutes (roughly 5.7 hours) of footage. The same card shooting RAW photos at 30MB each holds about 128,000 / 30 ≈ 4,266 photos.
Common Use Cases
- Deciding what size memory card to buy before a trip or shoot.
- Estimating how many cards you'll need for a full day of 4K video recording.
- Comparing storage needs between JPEG and RAW photo workflows.
FAQs
- Are these file sizes exact for my camera? No — actual file sizes vary by camera model, sensor resolution, compression settings, bitrate, and scene complexity. These are illustrative average figures meant to give a reasonable ballpark estimate, not an exact count.
- Why does RAW take up so much more space than JPEG? RAW files store nearly all the sensor's unprocessed data with little to no compression, preserving maximum editing flexibility, while JPEG applies lossy compression that discards data to shrink the file significantly.
- Does higher video bitrate or frame rate change the file size? Yes significantly — a higher bitrate or frame rate setting increases the data recorded per minute, which would raise the average file size beyond the illustrative figure used here. Check your camera's actual bitrate specs for a more precise per-minute estimate.