Construction & Home Improvement Calculators18 free tools to calculate concrete, cement, bricks, tiles, flooring, roofing, land area, stairs, fencing, gravel & sand, mulch & soil, air conditioning size, paint, asphalt, rebar, and construction cost.
Calculate how much concrete (in cubic meters and tons) you need for a slab, footing, or foundation.
Convert a concrete volume into the exact number of cement bags, plus sand and aggregate quantities, for a chosen mix ratio.
Calculate the number of bricks needed for a wall based on its dimensions, brick size, and mortar joint thickness.
Calculate the volume and weight of gravel, sand, or crushed stone needed to cover an area at a given depth.
Calculate the number and total weight of reinforcing steel bars (rebar) needed for a concrete slab based on its dimensions and bar spacing.
Calculate the number of tiles and boxes needed to cover a floor or wall, including a wastage allowance for cuts.
Calculate how much flooring material you need — laminate/vinyl planks or carpet rolls — for any room.
Calculate how many gypsum/drywall sheets you need to cover a wall or ceiling area, plus an estimated screw count.
Calculate the actual roof surface area (adjusted for pitch) and how many roofing material units you need.
Calculate how many liters of paint you need for a wall or room based on area, number of coats, and coverage rate.
Find out how many paint cans of a given size you need to buy to cover a specific area, based on the coverage rate per liter.
Calculate the area of a plot of land in square meters, and convert it instantly to square feet, acres, and hectares.
Calculate the number of steps, riser height, tread depth, and stringer length for a comfortable, code-friendly staircase.
Get a rough estimate of total construction cost based on built-up area, number of floors, and cost per square meter.
Calculate the number of fence posts and total rail length needed for a fence of a given length.
Calculate the volume, bags, and weight of mulch, topsoil, or compost needed to cover a garden bed at a given depth.
Estimate the air conditioner or heater capacity (in BTU) needed for a room, based on its size, sun exposure, and use.
Calculate how many tons of asphalt you need for a driveway, road, or parking lot based on area and thickness.