Two-Liquid Measured Density Blend Calculator

Method, example, and limits

Formula: m₁ = ρ₁V₁; m₂ = ρ₂V₂; ρblend = (m₁ + m₂)/(V₁ + V₂).

Inputs and units: V is measured volume in liters, ρ is measured density in kg/L, and m is mass in kilograms. This calculator uses volume inputs and derives mass; mass is not treated as volume.

Worked example: Mixing 2 L at 0.8 kg/L with 3 L at 1.2 kg/L gives 1.6 kg + 3.6 kg = 5.2 kg in an assumed 5 L, so estimated density is 1.04 kg/L.

Assumptions: Both input volumes are measured at compatible conditions and final volume is assumed to equal V₁ + V₂. The result is a mass-weighted average by volume only under that volume-additivity assumption.

Limits: No chemical reaction or volume contraction/expansion is modeled. Real mixtures can change volume, temperature, or composition; use final measured mass and final volume for an actual blend density.