Concrete & Construction Calc

Blok is the calculation tool for the modern job site: over 70 trade calculations in your pocket, results drawn in 3D, and Barto, the beaver assistant who answers your job site questions.

Built for masons, concrete finishers, roofers, tile setters, drywallers, electricians, plumbers, painters and serious DIYers.

THE RIGHT NUMBER, FIRST TIME

Pick a trade, enter your measurements: concrete, cement bags, blocks, tile, paint, roof pitch, wire size… The result appears in seconds, with the quantities to order and the points to watch.

THE RESULT IN 3D

Slab, wall, stairs, roof: what you calculate is drawn in 3D, dimensions included, so you can check everything at a glance before you order.

FEET OR METERS, YOUR LOCAL RULES

Work in feet and pounds or in meters and kilos. Bag sizes, voltage, installation rules: Blok adapts to the country you choose.

BARTO, YOUR JOB SITE ASSISTANT (BLOK PRO)

A question about a mix, a slope or a wire size? Barto answers and opens the right calculation, already filled in. He needs an internet connection and can make mistakes: always double-check.

YOUR JOBS, ORGANIZED BY PROJECT

Keep every calculation for a job in one place and find any number in two taps.

THE 10 MODULES

MASONRY: concrete volume (slab, round column, stairs, wall, footing), concrete and mortar mix, cement bags, blocks per area, full slab, screed.

DRYWALL: panels, screws, tape and mud, studs and tracks, R-value, U-factor.

TILING: tile per area, waste, thinset, grout, baseboards, floating floor, vinyl flooring, diagonal layout.

PAINTING: wall and ceiling area, paint quantity, primer, wood finish.

ROOFING: pitch, rafter length, gable or hip roof area, tiles and slate, battens, lumber sizes, gutters and downspouts, underlayment.

ELECTRICAL: Ohm's law, power, wire size, voltage drop, circuit check.

PLUMBING: water heater, pipe size, drain slope, radiator and boiler output, head loss.

EARTHWORK: excavation, swell factor, tonnage, truckloads, drain slope.

GEOMETRY: areas, volumes, Pythagorean theorem and 3-4-5 squaring, trigonometry, proportions.

CONVERSIONS: length, area, volume, weight, temperature, pressure, power, feet and inches, AWG…

NO SIGNAL NEEDED, NO ADS

Calculations work offline, in a basement or out in the middle of nowhere. No account to create. No ads.

FREE OR PRO

The free version gives you 10 credits to start, then 3 more every Monday, up to 10 (one calculation = one credit). Blok Pro unlocks unlimited calculations, Barto, unlimited projects and favorites, and your calculation history. Monthly or yearly subscription: the price is shown before any purchase.

DISCLAIMER

Blok's results are indicative. They do not replace local building codes or the advice of an engineer. For any work that affects safety, consult a qualified professional.

Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Manage or cancel at any time in Google Play under Payments & subscriptions.

Terms of Use: https://blok.devolim.fr/en/legal/terms.html

Privacy: https://blok.devolim.fr/en/legal/privacy.html

Support: contact.blok@devolim.fr

Blok is published by DEVOLIM (BAUGEY MATHEO), a French sole proprietor. SIREN 948 000 757, RCS Bordeaux.