Dilution Ratio Calculator
Calculate how much stock solution and diluent you need to reach a target concentration and volume.
This works for cleaning solutions, lab mixtures, garden feeds, and other dilution tasks.
Result
--
Run the calculation to see the mix ratio.
| Metric | Value |
|---|---|
| Stock volume | -- |
| Diluent volume | -- |
| Dilution factor | -- |
| Mix ratio | -- |
Quick Answer
The dilution ratio calculator uses the standard C1V1 = C2V2 equation to find the amount of stock solution and diluent needed.
How to Calculate
- Enter the stock concentration.
- Enter the target concentration.
- Enter the final volume you want.
- Click Calculate.
Formula
C1V1 = C2V2
Stock volume = target concentration x final volume / stock concentration
Diluent volume = final volume - stock volume
Worked Examples
Example 1: 10% stock to 2% target in 1 liter needs 0.2 liters of stock and 0.8 liters of diluent.
Example 2: 1:5 dilution means one part concentrate and five parts total mixture after mixing style is chosen.
Example 3: A 500 ml bottle can be diluted down to a weaker concentration with the same formula.
How to Interpret Your Results
| Output | Meaning | Action |
|---|---|---|
| Stock volume | How much concentrate to use. | Measure this amount first. |
| Diluent volume | How much water or solvent to add. | Add until the final volume is reached. |
| Dilution factor | How many times the stock is diluted. | Use it for labeling and repeat mixing. |
Frequently Asked Questions
Related Calculators
References
- OmniCalculator reference page
- The dilution equation is C1V1 = C2V2.
- Last reviewed: March 2026.