Photo & Video
41 free photo & video tools in the Calculators & Converters collection — every one runs in your browser with no signup and no uploads.
Astrophotography Target Framing Calculator
Check if a deep-sky object fits your sensor's field of view
Astrophotography Mosaic Panel Calculator
Calculate panel count and grid layout for a multi-frame mosaic
Astrophotography Total Exposure Calculator
How many subs and how much total time for a target SNR
Audio File Size Calculator
Estimate uncompressed WAV/AIFF size from sample rate, bit depth and length.
Aviation Noise Exposure Reference Tool
Look up aircraft noise category, EPNdB limits, and Stage/Chapter classification
Camera Angular Resolution Calculator
Find the minimum resolvable angle for a camera sensor and lens
Camera Sensor Size Comparison Tool
Compare physical sensor dimensions and crop factors across camera formats
Exposure Bracketing Calculator
Generate a bracket sequence of exposures around a base value
Exposure Value (EV) Calculator
Find equivalent exposures across aperture, shutter speed, and ISO
Eyepiece True Field of View Calculator
Calculate true field of view for any eyepiece and telescope
Field of View Calculator
Calculate horizontal, vertical, and diagonal field of view for any lens and sensor
Flash Guide Number Calculator
Calculate flash power, distance, or aperture from a guide number
Flash Power Reduction in Stops Calculator
Convert a flash power reduction (1/2, 1/4, 1/8...) into f-stops and the aperture or distance change to match it.
Focus Breathing Compensation Calculator
Estimate focal length shift from focus breathing at any distance
Focus Peaking Contrast Threshold Guide
Select the right focus peaking sensitivity level for your aperture and subject
Hyperfocal Distance Calculator
Find the hyperfocal distance for maximum depth of field at any aperture
Lens Breathing Compensation for Video
Calculate digital zoom compensation to counteract focus breathing in video
Astrophotography Light Pollution Exposure Calculator
Calculate the optimal sub-exposure for your sky's light pollution
Long Exposure Noise & Hot Pixel Estimator
Predict noise level for long exposures based on sensor temperature and ISO
Megapixel to Print Size Calculator
Find the largest print at your target DPI from your camera's megapixels
ND Filter Exposure Calculator
Calculate the long-exposure shutter speed needed with ND filters
NPF Rule Star Trail Calculator
Max shutter speed before star trailing with the accurate NPF rule
Panorama Nodal Point Calculator
Find the no-parallax point for stitched panorama photography
Hyperfocal Depth Chart Generator
Generate a complete hyperfocal distance table for every aperture and focal length
Zone System Exposure Calculator
Apply Ansel Adams' Zone System to place tones for black-and-white photography
Astrophoto Depth of Field & Hyperfocal Distance
Calculate hyperfocal distance for sharp foreground & star-field shots
Full EV Reference Table
Browse all exposure value combinations for ISO 100 across lighting conditions
Film Reciprocity Failure Calculator
Correct long-exposure times for reciprocity failure on common film stocks
Resin Exposure Time Calculator
Get starting base and normal layer exposure times for SLA/MSLA resin
500 Rule & NPF Star Trail Calculator
Find the longest exposure before stars trail, for any focal length
Photography Stop Calculator
Find the EV stops between two aperture, shutter speed, or ISO values
Sunny-16 Exposure Rule Calculator
Apply the Sunny-16 rule to find exposure settings in any lighting condition
Video Bitrate & Storage Calculator
Estimate video file size from bitrate, frame rate and duration
TV Viewing Distance Calculator
Find the ideal seating distance for your TV size using cinema viewing-angle geometry
Bandwidth Calculator
Estimate monthly bandwidth from page weight and visits per month.
Video Bitrate Calculator
Work out video file size from bitrate and duration, or the reverse.
F-Stop Calculator
Stops difference and light change between two apertures.
Bitrate Calculator (Audio + Video)
Find the bitrate needed to fit a target file size.
Crop Factor Calculator
Sensor size to crop factor, equivalent focal length and equivalent aperture — instant and precise.
Depth of Field Calculator
Near/far limits, hyperfocal distance, solve-for-any-variable and full aperture comparison.
Hyperfocal Distance Calculator
Focal length, aperture and sensor CoC to maximum depth of field — solve any variable.