Concrete Mix Calculator

Target Strength (MPa)

Concrete Volume (m³)

Decimals

Sand density (kg/m³)

Gravel density (kg/m³)

Cement bag size (kg)

Mix ratio (C : S : G)

Water–cement (w/c)

Cement (kg/m³) (override)

Loads ratio & w/c from MPa. You can still edit.

Material

By weight (kg)

By volume (m³)

Units / Notes

Cement

Bag = 50 kg

Sand

ρ = 1550 kg/m³

Gravel

ρ = 1450 kg/m³

Water

w/c = 0.52

SUBTOTAL

Rounding uses your “Decimals”