Construction Calculator: Pro²
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| Rating | |||
|---|---|---|---|
| Canada | 16%29 | 4.76 | |
| Russia | 14%26 | 4.54 | |
| United States | 9%17 | 4.88 | |
| Vietnam | 6%12 | 5.00 | |
| Australia | 5%10 | 4.50 | |
| France | 5%9 | 4.33 | |
| Japan | 4%7 | 4.57 | |
| Poland | 3%6 | 4.83 | |
| Taiwan | 3%6 | 5.00 | |
| Ukraine | 3%5 | 5.00 | |
| Germany | 2%4 | 5.00 | |
| Denmark | 2%4 | 4.25 | |
| Hungary | 2%4 | 4.75 | |
| South Korea | 2%4 | 4.75 | |
| Mexico | 2%4 | 5.00 | |
| Brazil | 2%3 | 4.67 | |
| China | 2%3 | 5.00 | |
| Czech Republic | 2%3 | 4.67 | |
| Italy | 2%3 | 4.33 | |
| Romania | 2%3 | 4.67 | |
| Chile | 1%2 | 4.50 | |
| Netherlands | 1%2 | 5.00 | |
| Norway | 1%2 | 5.00 | |
| Portugal | 1%2 | 4.50 | |
| Thailand | 1%2 | 3.50 |
Description
Build faster, measure smarter. Pro² is a complete construction calculator for decking, roofing, concrete, stairs, framing and precise on-site measurements. It’s made for builders, carpenters, contractors and serious DIY who need accurate answers in seconds.
DECKING & FLOORING
Area, board runs, spacing and waste allowance
Material takeoff for boards and joists
ROOFING (METAL & TILE)
Coverage and sheet/tile counts
Overhangs, pitch, angle and rafter length helpers
STAIRS & STRINGERS
Rise/run, slope %, angle (°) and stringer length
Clear breakdowns and step-by-step visuals
BALUSTERS, RAILING & EVEN SPACING
Perfect marks from 0 to full length
Spacing tables for clean, consistent layouts
CONCRETE, ASPHALT, GRAVEL & SOIL
Volume estimators for slabs, pads, footings and fills
Smart rounding for real-world quantities
SLOPE, PITCH & ANGLES
Fast framing helpers for cuts and layout
Metric and imperial support in every tool
UNIT CONVERTER
Length, area, volume, density and weight
Built for mixed-unit jobs (mm, ft, inches)
QUICK CALCULATOR
Running history with one-tap copy/share
MADE FOR THE JOBSITE
Fraction support and practical defaults
Works fully offline—no signal required
Clean visuals that stay readable outdoors
WHY PROS USE PRO²
One app instead of juggling multiple separate tools
Accurate results, simple inputs and clear diagrams
New tools and improvements arrive regularly based on user feedback
Pro² is built for professional construction, carpentry, decking, roofing and framing work—yet intuitive enough for DIY home projects. Upgrade to unlock additional tools and advanced features when you’re ready to grow your toolkit.
SUBSCRIPTION TERMS
Carpenter Pro is an optional auto-renewing subscription with Weekly and Annual plans.
A 3-day free trial is available on the Annual plan.
Payment is charged to your Apple ID and subscriptions renew automatically unless cancelled at least 24 hours before the end of the period.
You can manage or cancel your subscription in your App Store account settings.
Lifetime is a one-time purchase and does not auto-renew.
The localized price is shown in-app before you confirm.
Terms of Use (Apple EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://shapkin.dev/apps/carpenter/privacy.html