Construction Calc

Construction Calc is a metric-first calculator built for builders, tilers,
decorators and DIYers working in France, Germany, the UK and the US.

TEN CALCULATORS, ONE APP
• Concrete - volume and bag count (EU 25kg / US 60lb / 80lb bags)
• Tile - tile count and boxes, straight or diagonal lay
• Paint - litres or gallons by coats and coverage
• Drywall / Plasterboard - sheet count, EU and US sizes
• Blocks & Bricks - UK, US, or your own custom dimensions and mortar joint
• Stairs - risers, going, stringer length, and a real headroom check
against UK Part K or US IRC limits
• Roof - pitch, rafter length, surface area
• Area & Volume - rectangle, triangle, circle, trapezoid
• Right Angle - 3-4-5 squaring check and diagonal/hypotenuse
• Board Feet - timber volume in US board feet and m³

BUILT FOR A REAL JOBSITE
• Works offline - every calculator runs with no signal on site
• No sign-up, no account, no login
• Metric input with explicit mm/cm/m selection - never guess whether a
number means centimetres or millimetres
• Imperial mode with separate feet/inches fields - no fractions to type
• Works with your real block, brick, tile or timber sizes - not just one
region's presets

SAVE YOUR JOBS
Save calculations to a named job as you work through a site. Free covers
one job. Construction Calc Pro (one-time purchase, not a subscription)
unlocks unlimited saved jobs and lets you send the full materials list -
quantities and workings - straight to WhatsApp, SMS or email instead of
retyping it for the merchant. Pro also removes the ads.

No account needed. Your jobs stay on your phone. The free version shows a small
banner ad and an occasional full-screen ad after you save; Pro is one payment,
not a subscription. Ads are provided by Unity Ads, which may use device
identifiers and approximate location (see our privacy policy).

Recent changes:
Fixes: crashes in Blocks & Bricks and when pasting text into a number field, paint in imperial now uses sq ft per gallon, "1,500" is no longer read as 1.5 mm, deleting a job asks first and a deleted calculation can be undone, results no longer hide behind the navigation bar. Pro restores itself on a new phone. The free version now shows a small banner on the home screen and an occasional ad after saving; Pro has no ads.