Wool Dyeing Calculator
Calculate dye quantities, mordant weight, and water volume for dyeing wool fibre
Input Details
Fibre Weight
100.0 g
Dye Bath Water
3.0 L
30:1 liquor ratio
Acid dye powder (Medium shade)
2.0 g
Mordant
Not required
Care Notes
- •Maintain dye bath at 80–95 °C for acid dyes — do not boil vigorously as this can felt wool.
- •Add a splash of white vinegar or citric acid to lower pH and fix the dye.
- •Allow fibre to cool slowly in the dye bath for even uptake; rinse in water of the same temperature.
Notes
- •OWF (On Weight of Fibre) is the standard method for calculating dye quantities — all percentages are relative to dry fibre weight.
- •Natural dye quantities are for dry plant material unless otherwise noted. Fresh plant material requires roughly 3× the weight of dried.
- •The 30:1 liquor ratio (mL water per g fibre) is a general guide — some recipes use higher ratios for better dye circulation.
- •Always test on a small sample first. Results vary with water pH, fibre type, and mordant quality.