Dilution Calculator
Calculate how much developer concentrate and water you need for a target working solution volume.
Calculate dilution
Enter your target volume and select the dilution ratio
ml
Developer:250ml
Water:250ml
Total:500ml
Developer (1 part)Water (1 parts)
Understanding dilution ratios
Developer dilution affects both development time and image characteristics. The notation 1+X means 1 part concentrate to X parts water.
More concentrated
Stock, 1+1
- • Shorter development times
- • Higher contrast
- • More economical per roll
- • Better for push processing
More dilute
1+50, 1+100
- • Longer development times
- • Compensating effect
- • Better shadow detail
- • Typically one-shot use
Common developer dilutions
| Developer | Common Dilutions |
|---|---|
| Kodak D-76 | Stock, 1+1, 1+3 |
| Ilford ID-11 | Stock, 1+1, 1+3 |
| Kodak HC-110 | 1+15 (A), 1+31 (B), 1+63 (H) |
| Rodinal / R09 | 1+25, 1+50, 1+100 |
| Kodak XTOL | Stock, 1+1, 1+2, 1+3 |
| Ilford Ilfosol 3 | 1+9, 1+14 |
Track your chemistry and dilutions with Silverlog
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