Home & Construction

Appliance Energy Cost Calculator See how many kWh an appliance uses a month and what it costs in reais — right in your browser. Paint Calculator Work out how many litres of paint a room needs and which cans to buy — right in your browser. Floor Tile Calculator Turn a room into tiles, square metres and boxes — with the waste margin already included. Wire Gauge Converter (AWG ↔ mm²) Convert between AWG and mm² wire sizes, with diameter and indicative ampacity for copper conductors. Shopping List Organize your shopping list by category — produce, dairy, meat and more — with checkboxes and local storage. Concrete Calculator Calculate the volume of concrete for a slab, beam or column — and how many bags of cement, sand and gravel to buy. Torque Converter Convert between newton-metres, kilogram-force metres, pound-feet and other torque units. Flow Rate Converter Convert between litres per minute, cubic metres per hour, US gallons per minute and other flow rate units. Standby Power Cost Calculator See how much a device costs per year just by being plugged in — in watts, kWh and reais. Dew Point Calculator Calculate the dew point from temperature and humidity — the temperature at which moisture starts to condense. Rainfall Volume Calculator Convert millimetres of rain to litres of water collected over a given area. Swimming Pool Volume Calculator Calculate the volume of a pool in litres from its shape and dimensions — rectangular, circular or oval. Plant Spacing Calculator Calculate how many plants or trees fit in an area based on row and plant spacing. Lawn Seed Calculator Calculate how much grass seed you need for a given area — with typical rates for common species.