About SiteCalc Tools

Free construction calculators for tradies and DIYers

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Meet Shane

I'm Shane, the creator of SiteCalc Tools. Based in New Zealand, I built this site for tradies and DIYers who need quick, reliable construction calculations on the job — without digging through manuals or paying for an app.

My background is in the building and construction industry. I've seen firsthand how much time gets wasted on basic calculations that should take seconds. SiteCalc Tools is designed to fix that — fast, accurate calculators for concrete, fencing, decking, paving, and more.

All calculators are built and tested by me personally and updated regularly. Got a suggestion or found an error? Use the contact page — I read every message.

Our mission

Good tradespeople shouldn't have to waste time on basic maths. SiteCalc Tools gives you instant, accurate material estimates for the most common construction tasks — concrete volumes, fence post spacing, deck timber, paving areas, and more.

Everything is free, no signup required, and built for NZ and Australian conditions and measurements.

Privacy

We don't collect or store your inputs. All calculations happen in your browser. See our privacy policy for full details.