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Mix Ratio Calculator

Concrete & mortar mix proportions and standard tables

Mix ratio (cement : sand : gravel)
Cement
:
Sand
:
Gravel
β€» Proportional split (approximate dry mix). Enter two values only for a mortar ratio.
Standard mix table (tap to apply)
TypeUseRatio (C:S:G)
ConcreteStandard (~21MPa class)1 : 2 : 4
ConcretePlain / blinding1 : 3 : 6
ConcreteHigh-strength / watertight1 : 1.5 : 3
MortarPlaster / masonry (std)1 : 3
MortarWaterproof / tile1 : 2
MortarFinish / render coat1 : 1
β€» Conventional volumetric ratios. Structural concrete follows a proper mix design.
Related
🚧 Concrete VolumeπŸ“ Plaster QuantityπŸ—οΈ Rebar
FAQ
Standard concrete mix?
1:2:4 (standard), 1:3:6 (plain), 1:1.5:3 (high-strength), cement:sand:gravel. Real projects follow mix design.
Exact quantities?
This shows proportional split. For exact amounts use the concrete and plaster quantity calculators.
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Concrete & Mortar Mix Ratios

The mix ratio is the volumetric proportion of cement, sand and gravel (concrete) or cement and sand (mortar). Concrete commonly uses 1:2:4 as standard, 1:3:6 for plain/blinding, 1:1.5:3 for high-strength. Mortar uses 1:3 for plaster/masonry, 1:2 for waterproof/tile, 1:1 for finishing.

How to use

Type a ratio or pick one from the standard table. Enter a total volume to see the proportional split of each material.

Exact quantities

For amounts that account for voids and standard estimating, use the concrete volume and plaster quantity calculators.

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