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SnapRatios

Ratio & proportion tools

Dilution Ratio Calculator

Pick the convention your instructions use, then get the product and diluent amounts for your final volume.

Which convention does your instruction use?

Exact result

90.91 ml product · 909.09 ml diluent

11 total parts · final volume 1,000 ml

Product — 90.91 mlDiluent — 909.09 ml
Total parts
11
Product share
9.09%
Other convention
100 ml

Working

  1. Product : diluent adds up: 1 + 10 = 11 total parts.
  2. One part = 1,000 ÷ 11.
  3. Product = 90.91 ml, diluent = final volume − product = 909.09 ml.
  4. With the other convention the product amount would be 100 ml — the two are not the same.
Labelling conventions differ between products. Follow the wording on the product, label or instructions you are working from. SnapRatios calculates proportions only — it does not tell you whether a concentration is safe or suitable.

1:10 is not always 1 in 10

Read as product to diluent, 1:10 means one part product plus ten parts diluent — eleven total parts, so a 1,100 ml batch needs 100 ml of product. Read as “one part in ten”, the ten is the total, so the same batch needs 110 ml. Choosing the wrong reading changes the concentration by roughly ten percent.