Use these tables when the ratio is concentrate : water = 1:10, 1:100 or 1:1000. First check whether your input is the finished total volume or the water already available. A 2L finished total includes concentrate; 2L of water does not.
These ratios are arithmetic examples, not recommended recipes for a cleaner, car shampoo or pesticide. Follow the particular product's instructions for its ratio and method.
1:10 table | 1:100 table | 1:1000 table
Choose the volume you know
A concentrate-to-water ratio of 1:n contains n + 1 parts in total. Use matching volume units for concentrate and water.
- Known finished total V: concentrate = V ÷ (n + 1); water = V × n ÷ (n + 1).
- Known water W: concentrate = W ÷ n. Add that concentrate to the water to find the calculated total.
- Known concentrate C: water = C × n.
For example, making 2L total at 1:100 needs about 19.80mL concentrate. Starting with 2L water needs 20mL concentrate, giving 2,020mL total. These are different inputs.
1:10 dilution table
Divide the total into 11 parts. For 2,000mL total, concentrate is about 181.82mL and water is about 1,818.18mL.
| Finished total | Concentrate | Water |
|---|---|---|
| 500 mL | 45.45 mL | 454.55 mL |
| 1,000 mL | 90.91 mL | 909.09 mL |
| 2,000 mL | 181.82 mL | 1,818.18 mL |
| 5,000 mL | 454.55 mL | 4,545.45 mL |
Starting with 2,000mL water needs 200mL concentrate, giving 2,200mL total. Starting with 100mL concentrate needs 1,000mL water.
1:100 dilution table
Divide the total into 101 parts. For 2,000mL total, concentrate is about 19.80mL and water is about 1,980.20mL.
| Finished total | Concentrate | Water |
|---|---|---|
| 500 mL | 4.95 mL | 495.05 mL |
| 1,000 mL | 9.90 mL | 990.10 mL |
| 2,000 mL | 19.80 mL | 1,980.20 mL |
| 5,000 mL | 49.50 mL | 4,950.50 mL |
| 10,000 mL | 99.01 mL | 9,900.99 mL |
Starting with 2,000mL water needs 20mL concentrate, giving 2,020mL total. Starting with 10mL concentrate needs 1,000mL water.
1:1000 dilution table
Divide the total into 1001 parts. For 20,000mL total, concentrate is about 19.98mL and water is about 19,980.02mL.
| Finished total | Concentrate | Water |
|---|---|---|
| 500 mL | 0.50 mL | 499.50 mL |
| 1,000 mL | 1.00 mL | 999.00 mL |
| 5,000 mL | 5.00 mL | 4,995.00 mL |
| 20,000 mL | 19.98 mL | 19,980.02 mL |
Starting with 20,000mL water needs 20mL concentrate, giving 20,020mL total. Starting with 10mL concentrate needs 10,000mL water.
Read rounded values separately from measuring precision
All three tables round to two decimal places. At 1:1000 with 1,000mL total, the calculated concentrate amount is about 0.999001mL, shown as 1.00mL. Displayed decimal places do not establish the precision of your measuring equipment or the accuracy of a physical mixture.
The calculations simply add measured volumes. When product or laboratory instructions require an exact final volume, use the make-up-to-volume procedure and equipment specified by those instructions.
Enter the values in the app
Enter concentrate ratio 1 and water ratio 10, 100 or 1000. Choose Calculate by total amount (material+water) for a finished total, or Calculate by amount of material or water for an amount you already have. See the Dilution Ratio Calculator instructions for screenshots and unit selection.
If the product instead specifies concentrate : total, convert the ratio before using the app: 1:10 concentrate-to-total means 1:9 concentrate-to-water; 1:100 means 1:99; and 1:1000 means 1:999. Do not assume that '10-fold', '100-fold' or '1000-fold dilution' uses the same convention as concentrate-to-water ratios.
Check the specific pesticide label for its ratio, handling and use conditions. The EPA introduction to pesticide labels explains the role of product-specific label directions.