Dilution Ratio Calculator
Choose a parts-ratio recipe or concentration dilution. Parts mode divides a final volume; concentration mode finds starting solution and diluent needed for a target strength and final volume.
How to use the Dilution Ratio Calculator
Enter a dilution method and either positive parts plus final volume or starting concentration, target concentration, and target final volume.
Review whether the label means concentrate:water or concentrate:total, compatible concentration bases, chemical safety, and mixing instructions.
Read starting or concentrate volume, diluent volume, and either ratio or equation check.
Formula
Parts mode uses concentrate = V × a ÷ (a+b). Concentration mode rearranges C₁V₁ = C₂V₂ to V₁ = C₂V₂ ÷ C₁; diluent = V₂ − V₁.
Example
For a 1:4 concentrate-to-water ratio and 10 L final mixture, concentrate is 2 L and water is 8 L.
Assumptions and limitations
- Volumes are treated as additive and concentration bases must match; chemical reactions, contraction, temperature effects, and safety limits are not modeled.
- Dilution Ratio Calculator treats the entered values as estimates and does not infer missing project, account, or personal details.
- Calculations retain working precision except where the cited method requires an intermediate rounding step; displayed values are then formatted separately. Source rules and dated rates must be rechecked when they change.
Sources
- OpenStax: College Algebra 2eAlgebraic, ratio, radical, equation, and function formulas. Reviewed 2026-08-14.
- National Institute of Standards and Technology: SI Units — LengthLength, area, volume, and unit-conversion conventions. Reviewed 2026-08-14.
- OpenStax: Prealgebra 2eOfficial formula, rate, or program guidance used by this calculator. Reviewed 2026-08-14.
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Frequently asked questions
How does the Dilution Ratio Calculator work?
Parts mode uses concentrate = V × a ÷ (a+b). Concentration mode rearranges C₁V₁ = C₂V₂ to V₁ = C₂V₂ ÷ C₁; diluent = V₂ − V₁.
What information should I enter in the Dilution Ratio Calculator?
Enter a dilution method and either positive parts plus final volume or starting concentration, target concentration, and target final volume, then verify whether the label means concentrate:water or concentrate:total, compatible concentration bases, chemical safety, and mixing instructions.
What should I verify before using this Dilution Ratio Calculator result?
Volumes are treated as additive and concentration bases must match; chemical reactions, contraction, temperature effects, and safety limits are not modeled.
Reviewed 2026-08-14 · parts-and-c1v1-v2 · content-2026-08-14 · Trusty Calculator Editorial Team