Calculators & converters

Calculate quantities, check sizes or convert units in either direction. Choose a tool to get started.

Work out tile coverage, waste allowance, whole boxes and material cost.

Add your rooms, compare pack sizes and include underlay in your list.

Compare a print with a frame and check what a mat will cover.

Calculate wall and ceiling paint with your coverage rate and coats.

Calculate the area of rectangles and L-shapes, with exclusions.

Convert metres, feet, inches, centimetres and other lengths in either direction.

Convert square metres, square feet, acres, hectares and other area units.

Convert litres, millilitres, gallons, quarts, pints and fluid ounces.

Convert kilograms, pounds, stone, ounces, grams and tonnes.

Already started something? Open your saved projects to pick up where you left off on this device.

Choose your tool