Home & Garden Calculators
Paint, construction, garden, and sustainability calculators.
Construction & Renovation
Paint, tiles, concrete, flooring, and room size calculators.
BTU Calculator
Estimate room cooling capacity from floor area, ceiling height, sun exposure, and occupants, then compare the BTU result with the equivalent tons and suggested AC size.
Concrete Calculator
Convert slab dimensions into concrete volume, add a waste allowance, and estimate bag counts before ordering material.
Gravel Calculator
Enter length, width, and depth to estimate gravel volume in cubic yards, see the approximate tonnage, and compare the raw quantity with the built-in compaction allowance.
Mulch Calculator
Estimate mulch volume from bed length, width, and depth, then compare the cubic-yard total with the equivalent cubic feet and 2-cubic-foot bag count.
Paint Calculator
Enter paintable wall area, number of coats, coverage per liter, and waste buffer to estimate how many liters of paint the job requires.
Roofing Calculator
Enter roof length, width, pitch, and waste factor to estimate roof area, roofing squares, and a rough shingle-bundle count.
Square Footage Calculator
Enter length and width in feet to calculate rectangular area in square feet, square meters, square yards, and acres.
Stair Calculator
Enter total rise, preferred riser height, and tread depth to estimate step count, actual riser height, total run, and stringer length before checking the plan against local code.
Tile Calculator
Enter room length, room width, square tile size, and waste allowance to estimate the number of tiles needed before installation.
Garden & Agriculture
Plant spacing, soil, fertilizer, and small farming calculators.
Environment & Sustainability
Carbon footprint, electricity savings, solar, and water usage calculators.
Carbon Footprint Calculator
Estimate annual CO2e from electricity, fuel, short flights, and diet assumptions, then compare the contribution from each source in one breakdown.
Dew Point Calculator
Calculate dew point from temperature and relative humidity, then read the result against the built-in comfort bands and the temperature-to-dew-point spread.
Heat Index Calculator
Estimate the feels-like temperature from heat and humidity, then read the result against the caution, danger, and extreme-danger bands.
Wind Chill Calculator
Estimate how cold exposed skin feels from air temperature and wind speed, then compare the result with the actual temperature.
