Hobby calculators
Cost and planning tools for makers and print services.
3D print cost calculator
Filament, power, depreciation, failure buffer, markup sale price, pie chart, sensitivity.
Depth of field calculator
Hyperfocal, near/far focus, total DOF, in-front/behind split, sensor CoC, SVG diagram.
Hyperfocal distance calculator
H = f²/(N·CoC), near limit at H/2, nine-stop aperture table, meters or feet.
BPM tap tempo calculator
Tap tempo, 11-note delay table, LFO Hz, spacebar, rolling average, 3s idle reset.
Aquarium stocking calculator
Surface sq in per inch, bioload low/med/high, capacity gauge, outdated gal rule.