Construction Calculator Pro

Construction Calculator is the all-in-one building material estimator for DIY renovators, homeowners and trade professionals. Stop guessing quantities: get clear, detailed estimates for concrete, tile, paint, wallpaper, bricks, gravel and baseboards in seconds — fully offline, right on the job site.

8 JOBSITE CALCULATORS
• Concrete slab calculator — length × width × thickness to m³/yd³, bags (25/35 kg or 60/80 lb) and mixing water
• Concrete column & footing — round or rectangular forms, any quantity
• Tile calculator — room area minus openings, tile size, adjustable 5–15% waste, tiles and boxes to buy
• Paint calculator — wall area with doors and windows deducted, coverage and coats, litres plus a can-size shopping list
• Wallpaper — perimeter, wall height and pattern repeat to rolls
• Bricks & blocks — wall area, unit format and joint thickness to units and mortar bags
• Gravel & sand — surface × depth to volume and tonnes by density
• Baseboards & edging — perimeter minus openings to boards to buy

BUILT FOR THE JOB SITE
• Big steppers you can tap with gloves on
• Metric and imperial units, switch anytime
• Every result shows a separate +10% safety margin
• Copy any estimate and paste it straight into a message to your supplier
• 100% offline — works in the basement, no account, no signup

FREE & PRO
The free version includes the concrete slab, paint, tile and gravel calculators — genuinely useful, forever. Go Pro once to unlock all 8 calculators, keep a history of your calculations and remove all ads.

Whether you are pouring a concrete slab, tiling a bathroom, repainting a bedroom or laying a gravel path, this construction calculator gives you a fast, reliable material estimate so you buy the right amount the first time.

Estimates are indicative — always confirm quantities with your supplier.