utils logo UTILS
Free online tools to generate, calculate,
convert, format, encode, and play.
 

Photography Utils

Photography calculators and tools. Depth of field, exposure settings, focal length equivalents, golden hour times, and print sizing — all client-side.

Aspect Ratio Cropper
Crop images to standard aspect ratios like 4:3, 16:9, 1:1, and custom ratios with a live preview.
Astrophotography Exposure
Calculate optimal exposure settings for astrophotography using the 500 rule, NPF rule, and sensor crop factors.
Composition Overlay
Overlay rule of thirds, golden ratio, diagonal, and triangle composition guides on your photos.
Depth of Field Calculator
Calculate near and far focus limits, total depth of field, and circle of confusion for any lens and aperture combination.
Exposure Triangle Calculator
Balance aperture, shutter speed, and ISO to achieve correct exposure. Adjust one setting and see how others compensate.
Flash Guide Number Calculator
Calculate flash-to-subject distance, required aperture, or guide number given the other two values.
Focal Length Equivalent
Convert focal lengths between sensor formats including full frame, APS-C, Micro Four Thirds, and medium format.
Golden Hour Calculator
Find sunrise, sunset, golden hour, and blue hour times for any location and date.
Hyperfocal Distance Calculator
Find the hyperfocal distance for maximum depth of field based on focal length, aperture, and sensor size.
Image File Size Estimator
Estimate image file sizes for different resolutions, bit depths, and compression formats like JPEG, PNG, and TIFF.
Lens Comparison Tool
Compare field of view, depth of field, and perspective between different focal lengths and sensor sizes side by side.
Megapixel Calculator
Calculate megapixels from image dimensions, or find the maximum print size at a given resolution and DPI.
ND Filter Calculator
Calculate the adjusted shutter speed when using ND filters. Supports stacking multiple filters and common ND densities.
Print Size / DPI Calculator
Determine optimal print size from image resolution, or find the required pixels for a target print size and DPI.
Star Trail Calculator
Calculate exposure time, number of frames, and total shooting duration for star trail photography at any focal length.
Time-Lapse Calculator
Calculate interval, total frames, shooting duration, and storage requirements for time-lapse sequences at any frame rate.

Feedback

Help us improve this page by providing feedback, and include your name/email if you want us to reach back. Thank you in advance.


Share with