Calculate the precise water-to-cement ratio, estimate strength, and visualize your mix in real-time.
1. Select Calculation Mode: Choose whether you want to find the W/C ratio, calculate the required water, or calculate the required cement.
2. Choose Units: Toggle between Imperial (gallons/lbs) and Metric (liters/kg).
3. Enter Values: Input your known values. The calculator and 3D drum update in real-time.
4. Review Results: Check the estimated strength, durability, and visual mix proportions.
W/C Ratio: Weight of Water ÷ Weight of Cement
Unit Conversions: 1 gallon water = 8.34 lbs | 1 liter water = 1 kg (2.205 lbs)
Strength Estimation (Abrams' Law): Approximated using empirical curve: PSI = 12000 × e^(-3.5 × (Ratio - 0.3))
0.30–0.35: Very high strength, low workability (precast, specialized).
0.40–0.45: High strength, moderate workability (structural, reinforced).
0.50–0.55: Normal strength, good workability (driveways, patios, slabs).
0.60–0.65: Lower strength, high workability (non-structural, fill).
0.70+: Avoid — significantly weakened concrete, high permeability.