Android app · On Google Play

The construction calculator
the job site deserves.

MeisterCalc is a construction calculator app for builders, carpenters and DIYers, in metric or feet, inches and fractions. Stairs, roof pitch, concrete, framing and levels, each with a live diagram, and the calculations work with no signal. Concrete, Stairs and Check Square are free; the rest come with a 3-day free trial.

No install for a quick sum: use the free online construction calculator for feet, inches, fractions and mm.

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✓ Free 3-Day Trial ✓ Works Offline ✓ No Ads ✓ Cancel Anytime
✕ Tired of generic apps not built for tradies?
✕ Tired of apps that don't work on site without signal?
✓ MeisterCalc. Built for the job. Free to try.
Why MeisterCalc

Built different.
By someone who gives a damn.

Not a generic app factory product. Every screen, every diagram, every interaction was crafted for the person wearing gloves, standing in direct sunlight, needing the answer in seconds.

Try Free. Stay Because It Works.

3 days free — no charge, no commitment. After the trial, keep it with a weekly plan or buy it outright for life. No ads, no upsells, ever.

Zero Signal Required

Basement slabs, rural sites, underground car parks, tunnel formwork — wherever you are, it works. No Wi-Fi. No 4G. No excuses.

Diagrams That Move

Every calculator has a live diagram that reacts as you type. Watch your staircase build step by step. See your raked wall slope in real time.

Hands-Free Mode

Baluster spacing and running measurement marks read out loud. Your hands are on the tools — the app calls the numbers for you.

Metric-First Design

Built in mm — not converted from feet. Switch to ft/in/fractions in Settings and it applies everywhere instantly. Designed for AU, NZ & UK.

Share Results Instantly

Send a full formatted calculation breakdown — inputs, outputs, all rows — straight to your client, supplier, or crew via any messaging app.

16 Calculators

Everything on site, in one app

From stairs to concrete, raked walls to dumpy levels — if you need a number on a building site, it's in here. More coming in v2.0.

Stairs

Rises, going, stringer, slope & angle

Baluster Spacing

Running table + voice readout

Check Square

Target Diagonal & Is It Square?

Pitch / Slope

10 solving modes — any 2 values

Decking

Lineal metres + waste factor

Equal Spacings

Posts, studs, balusters layout

Running Measurements

Tape marks + voice readout

Raked Walls

Stud cutting list, Mode A & B

Triangles

9 right-triangle solving modes

Concrete

Slab, strip footing & hole volumes

Dumpy Level

Reduced levels from a benchmark

Gravel

Volume, weight & order quantity

Soil / Fill

Volume, weight & order quantity

Asphalt

Volume, weight & order quantity

Stud Counter

Studs & lineal timber for a wall

Feet & Inches

Add, subtract and convert to mm
+

More Coming

Roofing, geometry, trades — v2.0

Direct Support

You message the developer.
Not a help desk.

When you have a question or find a bug, you're talking directly to the person who built the app — not a support ticket queue, not a bot, not an offshore team.

That's the standard every other app in this category has given up on. We haven't.

Email the Developer

Same-day response

Real answers, not auto-replies. If you report a bug, it gets fixed — not logged and forgotten.

Your feedback shapes the app

The v2.0 roadmap is built entirely from what real tradies ask for. Your request matters here.

Updates always included

Every new calculator, every fix, every improvement — included while you're subscribed, or forever if you buy outright.

Questions

About MeisterCalc

What is MeisterCalc?

MeisterCalc (Meister Calc) is a construction calculator app for builders, carpenters and DIYers on Android. It works out stairs, baluster spacing, roof pitch, concrete, gravel, decking, stud layouts, raked walls and dumpy level readings, in millimetres or in feet, inches and fractions, each with a live diagram.

Is MeisterCalc the same as MasterCalc?

No. MeisterCalc (meistercalc.com) is a construction calculator app for builders: stairs, roof pitch, concrete, framing. MasterCalc is a separate website with finance calculators.

How do you say MeisterCalc?

MY-ster-calc. The name comes from the German Meister, a master craftsman, and calc, short for calculator.

Is there a free online construction calculator?

Yes. The construction calculator on this site adds, subtracts, multiplies and divides feet, inches and fractions or millimetres, and works out area, concrete, roof pitch, stairs and diagonals in your browser.

Which calculators are free in the app?

Concrete, Stairs and Check Square are free to use. The others unlock with a weekly subscription that starts with a 3-day free trial, or a one-time unlock; Google Play shows the price in your currency.

Does the app work without signal?

Yes. Every calculation runs on the phone, so it works on site with no signal. Purchases need a connection.

Built better.
Try it for yourself.

One download. All 16 calculators. Works offline. Backed by the developer.
Free for 3 days. No ads. No compromises.

GET IT ON Google Play
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Free 3-day trial · Cancel anytime · Android 7.0+