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Concentration Dilution Calculator

C1
C2
V2

Result

Stock Volume (V1)10
Diluent to Add90
↗ Health

Concentration Dilution Calculator (C1V1=C2V2) Concentration Dilution Calculator (C1V1=C2V2) is a health and wellness calculator that helps you calculate the ratio between two numbers in simplified form. The formula used is: V1 = C2 × V2 / C1; diluent = V2 — free online calculator.

Formula

V1 = C2 × V2 / C1; diluent = V2 − V1
  • Concentration Dilution Calculator calculates its result from Stock Concentration (C1), Final Concentration (C2), Final Volume (V2). It uses the formula V1 = C2 × V2 / C1; diluent = V2 − V1. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
  • The main inputs are Stock Concentration, Final Concentration, Final Volume. Enter them in the units and format shown in the calculator.
  • Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Concentration Dilution

Inputs
  • Stock Concentration: 100 C1
  • Final Concentration: 10 C2
  • Final Volume: 100 V2

For C1=100, C2=10 and V2=100 mL: V1=10 mL; diluent=90 mL.

Sample result: Calculating…

Frequently asked questions

What does the Concentration Dilution calculate?

Concentration Dilution Calculator (C1V1=C2V2) Concentration Dilution Calculator (C1V1=C2V2) is a health and wellness calculator that helps you calculate the ratio between two numbers in simplified form. The formula used is: V1 = C2 × V2 / C1; diluent = V2 — free online calculator.

Which values should I enter?

Enter Stock Concentration, Final Concentration, Final Volume using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: V1 = C2 × V2 / C1; diluent = V2 − V1.

Why might my result differ from another source?

Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 10, 2026