Unit converter
Lengths, areas, volumes and weights, metric as well as imperial.
Result
Indicative calculation, run in your browser. No data is sent anywhere.
A construction job mixes units more often than you would think: an American plan in feet, a data sheet in millimetres, a capacity in gallons, an order in tonnes. Converting in your head works until the day you slip a factor of ten on an order.
This converter covers the four families that keep coming back in construction, with the imperial units facing the metric ones. The value converts as you type, with no button, and stays usable offline once the page is loaded.
You can also let the plan supply these figures for you.
Excel exportFrequently asked questions
Which units are covered?
Lengths from millimetre to kilometre plus inch, foot and yard; areas from mm² to km² plus are, hectare, ft² and yd²; volumes from mm³ to m³ plus litre, gallon and ft³; weights from gram to tonne plus pound and ounce.
Is the gallon US or imperial?
US, that is about 3.785 litres. It is the one used everywhere in the app for paint volumes, so that the same figure means the same thing from one screen to the next.
Can I work in imperial across the product?
Yes. The unit system is a global setting: measurements, inputs and exports switch together to feet, square feet and gallons. Data stays stored in metric, the conversion happens at display time.