Accurately estimate every block, every material, and every cost — before a single block is laid.
Block Calculator is the professional-grade masonry estimating tool built for blocklayers, builders, and construction professionals. Whether you're quoting a residential garage or planning a commercial retaining wall, get precise block quantities and material lists in seconds — right from your iPhone or iPad.
PRECISE BLOCK-BY-BLOCK BREAKDOWN
No more guesswork. The calculator identifies exactly how many of each block type you need:
• Stretchers, Halves, Knockouts, Lintels
• Knockout Lintels, Corner Knockouts
• Half Heights, Half Height Halves, Sills
Each block type is calculated based on your wall dimensions, openings, bond beams, and wall ends — matching real-world masonry layout rules.
COMPLETE MATERIAL ESTIMATES
Beyond blocks, get a full material summary:
• Mortar (loam volume)
• Cement bags
• Pallets required
• Concrete fill volume
• Beam plates
• Horizontal reinforcing steel (with 16% lap and waste allowance)
• Net wall area and total wall length
FLEXIBLE INPUT FOR REAL JOBS
• Multiple walls — add as many wall lengths as your project needs
• Multiple openings — doors, windows, or any opening with individual width, height, head height, quantity, and sill beam toggle
• Wall ends, bond beams, starters, and steel door frames
• Adjustable material ratios (blocks per pallet, per bag, per cubic unit)
METRIC & IMPERIAL
Switch instantly between 200-series metric blocks (mm) and 8-inch imperial blocks (inches). All defaults, increments, and validation rules adapt automatically. Your inputs are preserved when switching — nothing is lost.
BLOCK TYPES REFERENCE GUIDE
Not sure which block goes where? The built-in Block Types & Placement screen shows all 9 block types with:
• Product codes and dimensions
• Detailed placement descriptions
• Color-coded example wall diagrams — plain wall, block types overlay, grouted, with reinforcement, and grout-only views
Tap any block to see
