Free calculator

Dilution & injector calculator

Every dilution is the same equation — C₁V₁ = C₂V₂. Pick the value you don't know, enter the other three in whatever units you use (just keep them consistent), and read the answer.

Dilute a solution

C₁V₁ = C₂V₂

Solve for

Stock concentration (C₁)ppm / ECFinal concentration (C₂)ppm / ECFinal volume (V₂)L / gal

Stock volume (V₁)

8.00L / gal

Concentration factor 13×

Injector / Dosatron sizing

Stock strength for a 1:R ratio

Working (target) concentrationppm / ECInjector ratio (1 : R)Ratio conventionThis changes the math, not just the label.

Required stock concentration

80,800ppm / EC

= 101× the working strength

Convention difference at this ratio

800ppm / EC

Mixing to the wrong convention misses by exactly one working-strength unit.

Check which convention your injector's manual uses before mixing stock — “1:100” means different math on different brands (C×101 vs C×100). At high concentration factors, also watch salt solubility limits in the stock tank.

Need the recipe itself, not just the dilution? Try the recipe solver →