Metric and imperial mobile calculators

Calculate areas and material counts, convert cubic quantities, and distinguish US from imperial gallons.

Before you start

Confirm the active business, drawing or job identity, dimensions and supplier buying unit. The business country supplies an initial unit choice; a site address does not choose the drawing’s units. Tools are calculation aids; they do not independently measure a site, specify material depth or approve an estimate.

Plan eligibility, business features, permissions and device support still apply. Reading a guide does not grant access.

Step by step

  1. Open Tools → Quick tools → Area & materials. New calculations start in feet for a US business and metres for AU, NZ and Canada.
  2. Select Metric (m) or Imperial (ft) explicitly before entering Width and Length. Read the unit suffix beside each value and the square unit beside Area.
  3. For tiles or sheets, enter Item width and Item length in the same selected length unit. Check the displayed item area and calculated count against the actual product size and layout.
  4. When switching between metres and feet, review the converted dimensions; the calculation retains the underlying physical measurement. Changing units is not the same as entering a new size.
  5. Use Unit converter for metres/feet, square metres/square feet, cubic metres/cubic feet or cubic metres/cubic yards. Use the swap control only after checking which unit is the input.
  6. For liquid quantities, choose the explicitly labelled US gal or Imp gal conversion. The two gallon definitions are different; match the supplier specification.
  7. Record the result with its unit in the intended job notes or reviewed quote entry; the calculator does not automatically attach a measurement to the job. Keep length, area and volume distinct: 120 ft² is an area, not 120 ft³ of material. Review the original document rather than copying an unlabelled number.

Worked example

A 10 ft by 12 ft rectangular area is 120 ft², about 11.15 m². A separately specified depth of 0.5 ft gives 60 ft³, about 2.22 yd³. Check that the depth is specified in feet rather than inches before ordering material.

This is an illustrative scenario, not a customer testimonial.

Check the result

Check the arithmetic with one known dimension and record the unit beside every transferred quantity. Add waste, pack rounding and ordering allowances deliberately; a calculator output is not a supplier order.

Limits and troubleshooting

  • Mobile calculator choices do not rewrite an existing drawing, assembly, catalogue rate or quote. The web takeoff has its own saved measurement units and calibration.
  • Country defaults are starting points. Canadian work can use imperial specifications; select the required unit rather than inferring it from the address. NZ work can also specify imperial product sizes, and US work can specify metric sizes. Match the actual specification. These tools do not determine regional tax obligations.
  • Record your result before switching businesses. Changing the active business country can reset the Quick tools calculation; recheck the unit selector and re-enter known dimensions in the intended business. A blank or restarted calculator is not a saved job measurement.

Related web guides and screenshot examples

These examples show the web interface. They are not screenshots of the native app.

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