Engine displacement is the total volume swept by all pistons in an engine — a key spec for comparing engine size and performance. Enter your bore, stroke, and cylinder count to calculate it. CONSTRUCTION & HOME · CALCULATOR Engine Displacement Calculator Measurement Unit Millimeters (mm) Inches (in) Bore (cylinder diameter) Stroke (piston travel distance) Number of Cylinders Calculate Displacement Per Cylinder 0 cc Total Displacement 0 cc How to Use the Engine Displacement Calculator Select your measurement unit (millimeters or inches). Enter the bore (cylinder diameter) and stroke (piston travel distance) — found in your engine specs or manual. Enter t...
Repointing brick or blockwork means filling the joints between bricks with fresh mortar. This calculator estimates how much mortar you'll need based on the total joint length and your joint size.
CONSTRUCTION & HOME · CALCULATOR
Pointing Calculator
Mortar Volume
0 cu ft
Bags Needed (80 lb)
0
Based on ~0.6 cu ft mixed yield per 80 lb bag — check your product's yield.
How to Use the Pointing Calculator
- Measure or estimate the total linear length of joints you need to point (see the tip below for estimating this from wall area).
- Enter your joint width and depth in inches.
- Click "Calculate Mortar Needed" for an estimate in cubic feet and 80 lb bags.
How to Estimate Total Joint Length
If you don't know your total joint length, mark out a 1 square foot (or 1 square meter) section of the wall, count the linear length of all joints within it, then multiply by your total wall area. This gives a reliable average since brick spacing is usually consistent across a wall.
How Mortar Volume Is Calculated
Volume (cu ft) = Joint Length (ft) × Joint Width (ft) × Joint Depth (ft)
Bags needed is then volume divided by the mixed yield per bag (approximately 0.6 cu ft for a standard 80 lb bag, though this varies by product), rounded up to the nearest whole bag.
Frequently Asked Questions
Should I double this estimate for both sides of a wall?
Yes — if you're pointing both faces of a wall, calculate each side separately (or double your total joint length) since they're independent surfaces.
What mortar type should I use for repointing?
This depends on your masonry's age and material — older or softer brick often needs lime mortar rather than harder portland cement mortar to avoid damaging the brick. Check with a mason or your local building conservation guidance if unsure, especially on historic structures.
How deep should I rake out old mortar before repointing?
A common guideline is raking to a depth of about 2-2.5 times the joint width, but this varies by masonry type and condition.
Related Calculators
Disclaimer: This calculator provides a general estimate for planning purposes only. Repointing historic or structurally important masonry should be evaluated by a qualified mason, especially regarding mortar type compatibility.
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