Ethanol Dilution Calculator
Enter stock %, desired %, and target final volume (mL).
Volumes are assumed additive; real mixtures may slightly contract.
Formula
V_ethanol = V_final × (Desired% / Stock%). V_water = V_final − V_ethanol.
Volume additivity
Real mixtures may slightly contract or expand. For high‑precision work, use density tables.
Use cases
Preparing sanitizers, lab solvents, and teaching demos.