Trapcalculator

Use the free online Trapcalculator tool. Fast, private and easy to use — runs entirely in your browser. Part of our Bouwcalculators collection.

Betonvolumecalculator

Length (m) Width (m) Thickness (cm)

Work out how much concrete a slab needs in cubic metres, cubic yards and litres.

Wall area (m²) Coats Coverage (m² per litre)

Estimate the litres of paint required for a wall or room from area, coats and coverage.

Floor area (m²) Tile width (cm) Tile height (cm) Waste allowance (%)

Count how many tiles a floor or wall needs, including a cutting waste allowance.

Length (ft) Width (in) Thickness (in) Number of boards

Measure lumber volume in board feet, the standard unit for buying hardwood.

Rise Run

Convert roof rise and run into the x:12 pitch, angle in degrees and slope percentage.

Total rise (cm) Target riser height (cm) Tread depth (cm)

Plan a staircase: number of steps, exact riser height, tread count and total run.

Wall area (m²) Brick length (cm) Brick height (cm) Mortar joint (cm) Waste allowance (%)

Estimate bricks for a single-skin wall from its area, brick size and mortar joint.

Bed area (m²) Depth (cm)

Find how much mulch, soil or gravel to order in cubic metres, cubic yards and 50 L bags.

Is the Trapcalculator free to use?

Yes. The Trapcalculator is completely free with no sign-up, no limits and no watermarks. You can use it as many times as you like.

Is the Trapcalculator safe and private?

Absolutely. The Trapcalculator runs entirely in your browser, so your data never leaves your device and nothing is uploaded to a server.

Do I need to install anything to use the Trapcalculator?

No installation is needed. The Trapcalculator works instantly online in any modern browser on desktop, tablet or mobile.

Does the Trapcalculator work on mobile phones?

Yes. The Trapcalculator is fully responsive and works smoothly on iPhone, Android and any other device.