Photography Calculators
Practical, fast, and free photography calculators. No signup required — all tools run directly in your browser. Use them to plan shots, understand your gear, and make smarter decisions before you raise the camera.
Depth of Field Calculator
PopularCalculate near focus, far focus, and total depth of field for any lens, aperture, and sensor combination.
Use calculator →Crop Factor Calculator
Find the full-frame equivalent focal length for any lens and sensor combination.
Use calculator →Focal Length Equivalent Calculator
Convert focal lengths between any two sensor formats — full frame, APS-C, MFT, medium format.
Use calculator →Shutter Speed Rule Calculator
Get the minimum recommended shutter speed based on your focal length, crop factor, and stabilization.
Use calculator →Print Size Calculator
UsefulSee exactly what print sizes your image resolution supports at professional DPI settings.
Use calculator →Memory Card Capacity Calculator
Estimate how many photos fit on any memory card based on file type and camera resolution.
Use calculator →Aspect Ratio Calculator
Simplify any image resolution into its exact aspect ratio and compare to common formats.
Use calculator →Image File Size Estimator
Estimate RAW, JPEG, TIFF, and HEIF file sizes based on your camera's megapixel count.
Use calculator →How These Calculators Work
Each calculator uses standard optical formulas and real-world values for sensor formats, file sizes, and camera specifications. Results are estimates — actual field conditions, lens design, and camera firmware all affect real-world outcomes. Use these tools to develop intuition and plan shoots, not as substitutes for testing your specific gear.
What You Can Calculate
- Depth of field — How much of your scene will be in focus at a given aperture and distance
- Crop factor conversions — How focal lengths translate between sensor formats
- Minimum shutter speed — Based on the reciprocal rule, with stabilization adjustments
- Print sizing — Whether your resolution supports a given print size at quality DPI
- Memory card capacity — How many shots you can fit based on file type and camera
- Aspect ratios — Simplified ratios and format compatibility
- File size estimates — RAW, JPEG, and TIFF sizes for any megapixel count