Sand and Cement Calculator

Batch the right amount of mortar or screed. Enter the coverage area, thickness, and mix ratio, and get bags of cement plus the sand volume you need.

ft
ft
in

🧚 Mix ratios

1:3 for load-bearing mortar, up to 1:6 for bed and screed work.

🔧 Bag math

A 94 lb bag yields about 1 cu ft of cement — count follows the ratio.

💧 Water guide

Approximates water needed for a workable mix.

🔒 Private

All calculations run locally in your browser.

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Mix it right the first time.