Work it out yourself.
Free calculators, look-ups and decoders for cleaning and household work — dilution ratios, square footage, stain and surface look-ups, laundry symbols, and what must never be mixed. Every one gives you an answer you can act on, and shows how it got there. No sign-up, nothing to install.
Every tool
Make it yourself
Recipes and mixes you can put together from ordinary ingredients.
Measure and estimate
Work out how much of something you need before you buy it.
Dilution and Ratio Calculator
Convert any dilution between ratio, ounces per gallon, millilitres per litre, percentage and ppm — for any concentrate.
Square Footage and Area Calculator
Measure rooms, L-shapes, circles and walls, add them up, and take doors and windows back off. Shows the arithmetic for every segment.
Cleaning Measurement Converter
Convert volume, weight and area between US, Imperial and metric units, with the US and Imperial differences spelled out.
Diagnose and look up
Find the right approach for a specific problem or surface.
Stain Removal Finder
Pick the stain and the surface it is on, and get the method that matches — plus what to avoid so the stain does not set permanently.
Surface-Safe Cleaner Lookup
Choose a surface and see what is safe on it, what needs care, and what causes damage that cannot be undone.
Decode and reference
Translate symbols, labels and charts into plain English.
Safety
Check whether something is safe before you do it.