Free Photography Calculators
Free online photography calculators for exposure, depth of field, lenses, lighting, video, astrophotography and more. Fast, accurate, no signup required.
Exposure
Calculate exposure settings, EV values, reciprocity, flash exposure, ND filters, HDR brackets and more.
12 calculators →
Depth of Field
Calculate depth of field, hyperfocal distance, circle of confusion, bokeh, focus stacking and more.
10 calculators →
Lens & Focal Length
Calculate crop factors, equivalent focal lengths, field of view, magnification, extension tubes and more.
10 calculators →
Lighting
Calculate flash guide numbers, inverse square law, key-to-fill ratios, softbox sizes and light modifiers.
12 calculators →
Printing & Display
Calculate print sizes, DPI requirements, megapixel needs, aspect ratios, crops, frames and viewing distances.
12 calculators →
Video
Calculate video file sizes, bitrates, frame rates, storage needs, shutter angles, slow motion and time-lapses.
11 calculators →
Astrophotography
Calculate star trail exposure times, the 500 rule, NPF rule, moon phases and polar alignment.
8 calculators →
Composition
Calculate rule of thirds, golden ratio, golden spiral, panorama settings, photo merge and symmetry guides.
8 calculators →
Camera Settings
Calculate shutter speeds, ISO, white balance, burst mode, buffer depth, memory card capacity and sensor specs.
10 calculators →
Business
Calculate photography rates, print pricing, packages, travel costs, equipment depreciation and hourly rates.
9 calculators →
Optics
Hyperfocal cheat sheets, depth of field tables and optical reference calculators for photographers.
1 calculators →
Technique
Calculators for handheld shooting limits, stabilisation effectiveness and shooting technique optimisation.
1 calculators →
Workflow
Photo editing time, culling workflow, delivery timeline and photography workflow planning calculators.
2 calculators →
Storage
Image backup, archive storage, drive sizing and cloud storage cost calculators for photographers.
1 calculators →
Gear
Camera gear and storage calculators for memory cards, file sizes, storage planning and equipment needs.
1 calculators →
Reference
Useful reference guides and charts for camera settings, filters, print sizes and sensors.
4 guides →
PhotoCalcs — Free Photography Calculators
PhotoCalcs offers 108+ free photography calculators across 15 categories. Calculate depth of field, exposure settings, crop factors, flash guide numbers, print sizes, video file sizes, astrophotography exposure times and more. Every tool uses accurate optical and photographic formulas. No signup required.
From the exposure triangle and hyperfocal distance to the 500 rule for star photography and golden ratio composition guides, our calculators cover every aspect of photography. Professional features include photography rate calculators, equipment depreciation tools and print pricing calculators for working photographers.
Browse all 108+ calculators or search above to find exactly what you need.