Spray Mix Calculators Spray Bottle Mixing Calculator
Spray Bottle Mixing Calculator (16 oz, 24 oz, 32 oz)
Designed for small bottles like 16 oz, 24 oz, 32 oz, and 1 qt (plus metric sizes like 500 mL and 1 L). Convert ratios like 1:16, 1:32, and 1:64 into exact concentrate + water amounts.
Need the general calculator? Use the Spray Mix Calculator.
Mix a Handheld Spray Bottle
Enter your bottle size and ratio value X. Results include concentrate in fl oz + mL (plus tbsp/tsp) and the water amount to fill the bottle.
Quick examples (small bottles)
These are approximate reference checks. Use the calculator above for exact values and for any bottle size.
| Bottle size | Ratio | Concentrate (approx.) |
|---|---|---|
| 16 oz | 1:32 | ≈ 0.48 fl oz (≈ 14 mL, ~1 tbsp) |
| 24 oz | 1:64 | ≈ 0.36 fl oz (≈ 11 mL) |
| 32 oz | 1:32 | ≈ 0.97 fl oz (≈ 29 mL, ~2 tbsp) |
| 32 oz | 1:64 | ≈ 0.49 fl oz (≈ 15 mL, ~1 tbsp) |
| 1 L | 1:32 | ≈ 30 mL (~2 tbsp) |
Tip: For 1:X (concentrate:water), concentrate fraction is 1 ÷ (1 + X). Multiply by bottle volume to get concentrate.
FAQ
How much concentrate do I add to a 32 oz spray bottle for 1:32?
For a 32 oz final mix at 1:32 (concentrate:water), the concentrate is about 0.97 fl oz (≈ 29 mL). Use the calculator above for exact outputs and tbsp/tsp conversions.
How much concentrate do I add to a 24 oz spray bottle for 1:64?
Enter 24 fl oz and 1:64 in the calculator to get the exact concentrate amount, plus the remaining water needed to fill the bottle.
Is 64:1 the same as 1:64?
Not always. 1:64 commonly means 1 part concentrate to 64 parts water. 64:1 often means 64 parts water to 1 part concentrate. Use the ratio format selector to match the label wording.
Does this calculator replace pesticide label instructions?
No. This page provides dilution math and unit conversions only. Always follow the product label for approved uses, application rates, timing, and safety guidance.
How the math works
For ratios written as 1:X (concentrate:water), the concentrate fraction of the final mix is 1 ÷ (1 + X). Multiply that fraction by your bottle volume to get concentrate. The remaining volume is water.