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Dye Quantity Calculator

Work out dye quantity instantly with clear inputs, formula shown and shareable results.

About Dye Quantity Calculator

Dye is dosed as a percentage of the dry fabric weight, called depth of shade, and the bath volume follows from the water to fabric ratio. Because dye is measured against fabric weight rather than water volume, the same shade is repeatable in any size bath.

Formulas

Dye quantity

dye grams = fabric weight x depth of shade percentage

Bath volume

litres = fabric kg x water to fabric ratio

Worked example

With the default values below, Dye Quantity Calculator returns Dye powder needed of 10.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Dry fabric weightminimum 1 g
500 g
Depth of shadeaccepts 0.01–20 %
2 %
Water to fabric ratiominimum 1 L/kg
30 L/kg

Results

Dye powder needed
10.00 g
Dye bath volume
15.00 L
Salt at 60 g per litre
900 g
Soda ash at 10 g per litre
150 g

Step by step

  1. 1Values used
  2. 2Dye quantity
  3. 3Bath volume
  4. 4Dye powder needed= 10.00 g
  5. 5Dye bath volume= 15.00 L
  6. 6Salt at 60 g per litre= 900 g
  7. 7Soda ash at 10 g per litre= 150 g

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Dye Quantity figure worked out?

dye grams = fabric weight x depth of shade percentage. Dye is dosed as a percentage of the dry fabric weight, called depth of shade, and the bath volume follows from the water to fabric ratio.

Why does this matter?

Because dye is measured against fabric weight rather than water volume, the same shade is repeatable in any size bath.

What do I need to enter?

Enter dry fabric weight, depth of shade, water to fabric ratio. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.

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