Mortar Calculator – Cement, Sand & Water Estimator for Brickwork

Quickly calculate the mortar mix you need for your brick or block wall with optional cost and wastage adjustments.

Calculator Options

Standard is 10mm

Results

Enter your parameters and click "Calculate" to see results

How to Use the Mortar Calculator

  1. Select the wall type (brick or block).
  2. Input dimensions of wall and bricks/blocks.
  3. Choose the mortar joint thickness.
  4. Select or input the mix ratio (e.g., 1:5 = 1 part cement, 5 parts sand).
  5. Optionally enter costs and wastage percentage.
  6. Click "Calculate" to get exact material quantities and graphs.

Standard Mortar Mix Ratios

Application Mix Ratio (Cement:Sand) Notes
Brickwork (internal) 1:5 Good balance of strength and workability
Brickwork (external) 1:4 Stronger mix to resist weathering
Blockwork 1:6 Standard for hollow blocks
Stonework 1:3 Heavy-duty mix for load-bearing masonry

Tips & Best Practices

  • Standard joint thickness is 10 mm.
  • Mortar should be used within 2 hours of mixing.
  • Use washed sand for best bonding.
  • Adjust for 10–15% wastage in real-world conditions.
  • Mix dry ingredients thoroughly before adding water.
  • Add water gradually until the mortar reaches a workable consistency.
  • Protect fresh mortar from rapid drying in hot weather.