Free tool
Film Development Calculator
Development time from film, developer, dilution, temperature and push.
Inputs
Verify before you commitDevelopment times are the most variable number in photography. Check the published data sheet for your exact film and developer before processing anything irreplaceable.
Development time
9:45
Tri-X 400 · D-76 1:1 · 20 °C
Stop bath—
Fixer—
Wash—
Temp factor—
Agitation—
Compensation—
—0–25 min
Complete wet schedule
What this calculator does
Pick a film and a developer from the built-in table and the calculator returns a development time adjusted for your actual temperature and any push or pull, plus the full wet schedule from pre-soak to drying.
Inputs
- Film stock
- Developer and dilution
- Temperature (°C)
- Push / pull in stops
- Agitation strength
Outputs
- Development time
- Agitation scheme
- Stop, fix and wash times
- Temperature and push factors
- Complete processing schedule
Educational estimates. This calculator uses published approximations and standard photographic relationships. It is a teaching aid, not a substitute for the data sheet supplied with your film, developer or paper, and it makes no claim about the result you will get. Verify every figure before you rely on it.