Home and construction calculators
Cement, bricks, paint and tiles, plus solar, UPS backup and AC sizing for your home, using what is sold locally.
25 calculators · every one shows its working
- Concrete CalculatorCement bags, sand and crush for a slab or footing, in feet or metres, for the common nominal mixes.
- Brick CalculatorHow many 9 × 4.5 × 3 inch bricks a wall needs, with mortar joints, openings and breakage.
- Solar Panel CalculatorThe solar system size, number of panels, roof space and payback for your monthly electricity units.
- Paint CalculatorLitres and gallon tins of paint for a room's walls and ceiling, coat by coat.
- Tile CalculatorFloor tiles and boxes for a room in common sizes like 2 × 2 ft and 600 × 600 mm, with cutting waste.
- UPS Battery Backup Time CalculatorHow long your UPS or inverter battery will run fans, lights and other loads during load shedding.
- AC Tonnage CalculatorThe right AC size in tons and BTU for your room, adjusted for top floors, sun and people.
- Steel Bar (Sarya) Weight CalculatorThe weight of steel bars from their size, length and number, with the cost per kg.
- House Construction Cost CalculatorEstimate the cost of building a house from the covered area, grey structure and finishing rates.
- Generator Size CalculatorThe generator size in kVA for your load, allowing for motor starting power and spare capacity.
- Stair CalculatorHow many steps, the step height, tread run and angle for a staircase, with a comfort check.
- Concrete Block CalculatorHow many concrete blocks a wall needs, allowing for mortar joints, openings and breakage.
- Square Footage CalculatorAdd up the floor area of several rooms in square feet, square metres, square yards and marla.
- Gravel, Sand and Crush CalculatorHow many cubic feet and tonnes of gravel, sand, crush or soil an area needs, and the truckloads.
- Roof Area CalculatorThe surface area of a pitched or flat roof from the building's size and the roof pitch, and the material to order.
- Voltage Drop CalculatorThe voltage lost along a copper or aluminium cable, and the smallest cable size that keeps the drop within limits.
- Water Tank Capacity CalculatorHow many litres and gallons a rectangular or round water tank holds, and how much is in it now.
- Wallpaper CalculatorHow many rolls of wallpaper a room needs, allowing for doors and the pattern repeat.
- Plaster Calculator (Cement and Sand)Cement bags and sand for plastering a wall, from its area, thickness and mix ratio.
- Rainwater Harvesting CalculatorHow many litres of rain your roof can collect in a year and in the wettest month, and how long it would last.
- LPG Gas Cylinder CalculatorHow many days a gas cylinder lasts and what cooking gas costs you a month.
- Timber CFT CalculatorCubic feet (cft) of wood from the length, width and thickness, with the cost at a price per cft.
- Plant Spacing CalculatorHow many plants fit in a garden bed at a given spacing, in a grid, staggered or in rows.
- Fence CalculatorPosts, panels, rails and pickets for a fence, from the length of each side and the post spacing.
- Water Pump Size CalculatorThe pump horsepower and watts to fill a tank in the time you want, from the height and flow.