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Laundry detergent dosage calculator

Calculate detergent dosage from load size, soil level and water hardness.

Your result

Complete the fields and calculate.

Example

Laundry detergent dosage calculator

A 5 kg normally soiled load with medium water hardness needs about 78 ml.

FAQ

Frequently asked questions

How accurate is the result?+

The calculator uses the stated formula and only rounds the display. Accuracy depends on your inputs.

Is this calculator really free?+

Yes. Use it as often as you like without an account or registration.

Are my entries stored?+

The calculation runs directly in your browser. Calculator values are stored locally only when you explicitly add a result to “My results”. Favourites and history also remain locally on your device.