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eng.concrete-water-cement-ratio Calculator
Calculates the water-to-cement ratio for concrete mix design and estimates resulting compressive strength from Abrams' law. Every 0.05 decrease in w/c ratio increases 28-day strength by approximately 4–5 MPa — the fundamental parameter that drives concrete specification.
Inputs
Fc Target Mpa
Reference formula or conversion factor shown for context.
Cement Type
Reference formula or conversion factor shown for context.
Exposure
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Results
design w/c ratio
The proportional relationship between two quantities.
water content (kg/m³)
The value at the specified point or condition.
cement content (kg/m³)
Sample size or count used in the calculation.
w/c from strength (Abrams law)
Sample size or count used in the calculation.
w/c from exposure class
The classification assigned based on the computed value.
ACI 318 exposure limits
Reference formula or conversion factor shown for context.