Film Developing Time Calculator
This calculator takes a standard film developing time and adjusts it for temperature. Obtain the nominal developing time and temperature from a data sheet or from the Massive Dev Chart, then enter those values together with the actual temperature.
The calculation follows the exponential temperature correction used on the original Bandicoot calculator:
\[ t_{\mathrm{actual}} = t_{\mathrm{nominal}} e^{\alpha (T_{\mathrm{nominal}} - T_{\mathrm{actual}})}. \]Here \(T\) is measured in Celsius for the calculation, and \(\alpha = 0.1\). Constant agitation applies the same 10% reduction used by the original calculator. The result is intended as an approximate guide for Ilford black-and-white film/developer processes; other combinations may vary.
