Home & Property

Room, wall and floor areas, room volume, plots and acreage.

• Irregular Plot Area Calculator Area of a four-sided plot from its side lengths and one diagonal, and the fencing around it.
• Lot Size and Acreage Calculator Plot area from its dimensions, in square metres, square feet, acres and hectares, with the perimeter.
• Room Area and Square Footage Calculator Floor, ceiling and wall area of a room, in square metres and square feet.
• Room Volume and Air Changes Calculator The volume of a room, and the air changes per hour a fan or vent provides.
• Window Area Calculator Total window area, and glazing as a share of the floor.

Tanks, pipes, flow, pumps, rainwater and sprinklers.

• Drainage Slope and Fall Calculator The fall a drain, pipe or gutter needs over its length, as a ratio and a percentage.
• Pipe Size Calculator The pipe diameter for a flow at a chosen velocity. A hydraulic estimate, not a plumbing-code sizing.
• Pipe Volume and Flow Rate Calculator How much water a pipe holds, plus flow rate and velocity through it.
• Pump Head and Power Calculator Total head and the pump power needed for a flow and lift.
• Rainwater Harvesting Calculator How much rainwater a roof can collect in a year, from its area and your rainfall.
• Sprinkler Coverage Calculator How many sprinklers a lawn needs, the water they use, and how long to run them.
• Water Tank Volume Calculator Capacity of a cylindrical or rectangular tank in litres and gallons, and the current level.

Home energy, standby power and water use.

• Home Energy Cost and Standby Power Calculator What your appliances cost to run per year, split between use and standby, at your own tariff.
• Household Water Usage Calculator Daily and yearly household water use from showers, toilets, laundry and dishwashing.

Curtains, blinds, worktops, cabinets, ladders, moving and storage.

• Blind and Shade Size Calculator The width and drop to order for inside- or outside-mount blinds.
• Countertop and Cabinet Run Calculator Worktop area, slabs needed and how many base cabinets fit along a run.
• Curtain Fabric Calculator The curtain fabric needed for a window, allowing for fullness, hems and pattern repeat.
• Ladder Angle and Length Calculator The ladder length and base distance for a height, using the 4-to-1 rule.
• Moving Truck and Storage Unit Calculator How much space your belongings take up, and the van or storage unit size that fits.