Tools for natural dyers

Practical calculators and references for the dye bench.

Mordant Calculator
Calculate exact mordant quantities from fibre weight. Alum, iron, copper, tannin and more.
Shade Depth & Dye Quantity
How much dyestuff and water for a target depth of shade, from your fibre weight.
Seasonal Dye Calendar
Which dye plants are harvestable in each month across Indian regions.