Physics

Convert foot-candles to lux or lux to foot-candles with exact factors, rounding control, and optional extra readings.

Convert candela or mcd to lumens from a beam angle or solid angle, with beam spread and sphere share checks.

Convert lumens to candela using beam angle, wide and tall angles, or solid angle, with the steradians used shown.

Convert lux to lumens for a room, known area, or sphere, with optional loss factors for fixture lumen estimates.

Convert lumens to lux by lit area, cone beam, or bare bulb spread, with foot-candles and target comparison.

Estimate GPM from PSI using the right setup: nozzle, pipe exit, or pump power. Includes clear notes, limits, and unit checks.

Calculate copper wire mass or length from AWG, diameter, or area, with derived area, diameter, volume, and mass per length.

Calculate density, mass, or volume with unit conversion and optional water displacement for irregular objects.

Enter any 2 isotropic elastic constants to solve E, G, K, nu, and lambda with unit conversion and stability checks.

Calculate elongation, engineering strain, percent elongation, true strain, and elastic extension with clear length-based or load-material modes.