Pro² calculator guides

Tools for measuring, setting out and estimating materials on iPhone.

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Calculate here without an account. Explore the full toolkit in Pro² for iPhone.

Start with what you are measuring. Read about the inputs, results and limits of each tool in Pro² for iPhone.

Read a guide: Understand the method, measurements and limits.
Check a worked example: Follow fixed inputs and the published arithmetic.
Use the iPhone app: Enter your own dimensions, recalculate and save within your access limits.

Calculate free here, read the guides, or continue in Pro² for iPhone.

Set out flights, turns and baluster positions.

From concrete volume to reinforcing bar schedules and mesh coverage.

Lay out board courses and estimate brick or block walls.

Cover a roof slope and set out a rising wall.

Estimate paint, gravel, soil and asphalt from measured dimensions.

Find a diagonal, repeat a spacing or transfer a level.

Use your own measurements for stairs, concrete and materials. Keep the calculations together on your iPhone.

For iPhone · iOS 18 or later

Free to download.