Fabric Softener Calculator
Work out the correct fabric softener dose for your load size and water hardness.
How We Calculate This
Base dose of 35ml for a full load in medium water, adjusted by load fraction and water hardness.
Dose = 35ml × (load weight ÷ drum capacity) × water hardness multiplier
Soft: 0.8x | Medium: 1.0x | Hard: 1.3x
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities and timings for your specific situation.