Unlock the secret to durable concrete with our Concrete Mix Ratio Calculator. Accurately determine the exact quantities of cement, sand, and aggregate needed for your project. Perfect for DIYers and professionals aiming for optimal concrete strength and consistency. Calculate based on desired volume and mix ratio effortlessly.
Formula:
The Concrete Mix Ratio Calculator determines the required quantities of cement, sand, aggregate, and water based on your desired total concrete volume and chosen mix ratio.
Let V be the Total Volume of Concrete desired.
Let C:S:A be the Mix Ratio (e.g., 1:2:3), where C=Cement parts, S=Sand parts, A=Aggregate parts.
Total Parts (P) = C + S + A
The calculation first estimates the total loose dry volume (Vdry) required to produce V, typically Vdry ≈ 1.54 * V.
Then:
Cement Volume = (C / P) * Vdry
Sand Volume = (S / P) * Vdry
Aggregate Volume = (A / P) * Vdry
Water Volume is determined by the Water-Cement Ratio (W/C ratio, by weight). Water Weight = W/C Ratio * Cement Weight. Water Volume is then derived from Water Weight (Water Volume ≈ Water Weight / 62.4 lb/ft³).