Dilution Ratio Calculator
Work out how much concentrate and water to mix for a target dilution ratio, useful for cleaning chemicals and sprays, free in your browser.
Enter Values
Minimum 0
Minimum 0
How to use this calculator
- Enter the dilution as 1:N (just the N) and the total mixture you want.
- Read the concentrate and water amounts.
How it works
For 1:N, concentrate = total ÷ (1 + N) and the rest is water. So 1:10 of 1000 mL is ~91 mL concentrate.
Worked example
1:10, 1000 mL total. ≈ 91 mL concentrate, 909 mL water.
Common mistakes
- Reading 1:10 as 10% — it's 1 part in 11, about 9.1%.
- Mixing units — keep concentrate, water and total in the same unit.
Frequently asked questions
How do dilution ratios work?
A ratio like 1:10 means one part product to ten parts water, so for 1 L of product you add 10 L of water.
Does the ratio include the product or not?
Conventionally 1:10 is one part product plus ten parts diluent (eleven parts total); always check the product's own definition.
Does 1:10 mean add concentrate to 10 parts water?
Yes — 1 part concentrate to 10 parts water, so 11 parts total. This tool splits your total accordingly.
Related tools
- Ratio Calculator
- Proportion Calculator
- Decimal to Fraction Converter
- GCD & LCM Calculator
- Scale Converter
- Dilution Calculator
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Cite this tool
Zerdly. (2026). Dilution Ratio Calculator. Retrieved from https://www.zerdly.com/tools/dilution-ratio-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.