Mortar Calculator

Your details

Estimate from the wall face area, or from a known number of bricks or blocks.
Face area of the wall. Subtract large openings such as doors and windows.
sq ft
ASTM mortar type. Used for the raw cement, lime and sand breakdown if you mix on site.
Extra mortar for spillage, dropped boards and over-buttering. 10% is typical.
%
Currency
Bags of mortar
22
Bricks or blocks700
Placed mortar volume13.2cu ft
Total mortar weight1,760lb
Portland cement (if mixed)206lb
Hydrated lime (if mixed)88lb
Masonry sand (if mixed)0.49yd³

Buy about 22 80 lb bags of mortar for 700 bricks.

  • Bags are rounded up because mortar is sold whole and partial bags set up before you can use them.
  • If you mix from raw materials instead of pre-mix, this Type N batch needs about 206 lb cement, 88 lb lime and 0.49 yd³ sand.
  • Yields are field averages: tight joints, neat tooling and dry weather stretch a bag further, sloppy work uses more.
  • For a double-wythe (two-brick-thick) wall, roughly double the mortar of this single-wythe estimate.

Next stepOrder full bags plus a spare, and keep sand and water on hand if you mix from raw materials.

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