Block Count Calculator
Calculate the number of concrete blocks and mortar bags needed to build a wall.
How to Use the Block Count Calculator
- Enter the wall length and height in metres.
- Enter block dimensions and mortar joint thickness.
- Click Calculate to see blocks needed and mortar bag count.
حالات الاستخدام
- •Estimating materials for block wall construction.
- •Purchasing the correct number of blocks before starting.
- •Budget planning for masonry projects.
- •Comparing block sizes for cost optimisation.
الصيغة
Blocks = (Wall area / Block face area) × 1.05 (5% waste). Mortar bags ≈ 1 bag per 30 blocks.
الأسئلة الشائعة
Why add 5% waste?
A 5% allowance accounts for cuts, breakage, and irregular wall edges.
What size is a standard block?
The most common concrete block is 400 mm long × 200 mm high with a 10 mm mortar joint, giving a 410 × 210 mm face.
Is it free?
Yes, all calculators on OhMyCalc are completely free.