Photography Calculators

Last updated: October 2026

Golden Hour & Blue Hour Calculator

Find when the evening sun drops to a chosen golden-hour angle for any latitude and date.

Find equivalent camera settings that produce the same exposure value when you change aperture, shutter speed, or ISO.

Compute the image magnification ratio for macro photography from focal length, focus distance and extension tube length.

Calculate how many shots you need to cover a panorama, given your lens, sensor, and desired overlap.

Calculates the correct long-exposure shutter speed when stacking ND filters, accounting for reciprocity failure.

Calculate the horizontal coverage width (and height) at a given subject distance for any lens, sensor, and crop factor combination.

Find the largest print you can make from an image's pixel dimensions at a chosen resolution (PPI/DPI), in inches and centimeters.

Estimate what percentage of a memory card a session will fill based on your camera's megapixels and number of photos (RAW files assumed).

Find the new shutter speed needed to maintain correct exposure after changing aperture.

Estimates sunset time (and so when evening golden hour begins) from your latitude, longitude, day of year, and timezone.

Convert between pixels and inches at a chosen DPI/PPI.