Concrete, bricks, tiles, timber, plaster, decking and more — whether you do this for a living or you're doing it once, this weekend. UK, US, Australian and European units built in.
They say measure twice, cut once — for a reason. Get the numbers wrong and it costs you: a wasted trip back to the merchant, or a skip full of offcuts you paid for. Builder Calculator gives you the answer before you order anything.
Fifteen calculators, one app. No scrolling through menus built for an engineer.
Slabs, footings and circles. Bricks, blocks and wall ties. Tiling, decking, roofing, plaster coverage — every calculator a real job needs, not a generic "area × price" box.
Get the appUK, US, Australian and European units, built in from the start. Switch mid-job without losing a single number.
Get the appSave every calculation so it's there next time you're back on site — and export it as a PDF quote sheet for a client or the office.
Get the appQuick how-to guides alongside the calculators that need one, plus a suppliers list so you're not googling "builders merchant near me" mid-job.
Get the appSame app, same calculators — used differently, depending on why you're here.
Fast, accurate, no hand-holding. Get the number, save the job, quote it, move on to the next one. Built by a tradesperson who got sick of guessing bag counts on the back of an invoice.
You don't need to think like an engineer to use this — you need to know how much to buy before you're stood in the aisle guessing. Simple in, simple answer out.
Free to start. Unlock every calculator for a one-off payment — no trial that expires, no subscription, ever.
Finally an app that works on-site, not just in theory. Saves me hours of guesswork!
The concrete bag calculator alone is worth it. Dead accurate every time.
Yes. Every calculator can be used for free. A one-off £1.99 payment unlocks unlimited saved jobs, PDF quote export and priority support — permanently. No subscription, no trial that expires.
UK, US, Australian and European units, all built in. Switch mid-job without re-entering anything.
No. It's built to be simple enough for a first-time DIY job and accurate enough for a professional quote — same calculators, no mode to switch.
See our privacy policy for exactly what's collected and why.
Android now, on Google Play. iOS App Store submission is in progress — the button above will go live the moment it's approved.
Free to start. £1.99 once, if you want everything. No subscription, ever.