Free Online Calculators
Finance, math, health, construction, and everyday tools in one searchable catalog.
Your calculators
Wallpaper Calculator — Rolls, Pattern Repeat & Cost
Estimate wallpaper rolls for rooms or separate walls. Account for strip rounding, trim, straight or half-drop repeat, reserve, reusable offcuts, leftover length, and cost.
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Brick & Block Calculator — Wall, Mortar, Pallets & Cost
Estimate brick or concrete block walls with doors and windows. Calculate courses, units, waste, pallets, mortar bags, edge cuts, and material cost.
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Tile Calculator — Square Feet, Boxes & Layout
Enter the surface and tile size to see how many tiles and boxes you need. Optionally refine waste, layout, grout, and material cost.
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Paint Calculator — Gallons, Liters, Cans & Cost
Estimate paint for rooms, walls, and ceilings. Subtract doors and windows, set coats and coverage, and see gallons or liters, cans, leftover paint, and cost.
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Concrete Calculator — Cubic Yards, Bags & Cost
Calculate cubic yards or cubic meters for a slab, footing, column, or stairs. Add waste, then estimate ready-mix loads, bags, and cost.
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