One project, every trade
Each calculator adds its lines to a single estimate — consolidated BOM, schedule and cash-flow included.
Eight instruments built out of hardware you already have in your pocket. They use the phone's sensors, its camera and its screen to measure things on site — a level, a clinometer, a calibrated ruler, a way to get dimensions out of a photograph — and then hand the result straight to the calculators that turn it into a quantity.
Nothing installs, nothing signs in, and nothing is uploaded: this site has no server to upload to. Once a page has loaded it keeps working with no signal, which is usually where you need it.
Read the phone's own accelerometer and gyroscope. These need a phone or tablet held against the thing you are measuring — a desktop browser exposes the API but never reports a reading.
Turn your phone into a spirit level to check whether a wall, shelf or surface is truly plumb or level.
A two-axis spirit level driven by the phone's orientation sensors. The bubble drifts toward the low edge exactly as a vial level does, and the phone gives a short haptic pulse the moment both axes fall within half a degree of level — so you can feel the reading while your eyes are on the work.
Open Digital Bubble LevelLay your phone against a rafter, pipe or driveway and read the slope in degrees, percent grade and rise-over-run at once.
One angle, three ways of expressing it. Roofers work in rise-over-run, drainage is specified in percent grade, and structural drawings use degrees — this reads the phone's tilt and shows all three simultaneously, with a lock button so you can take the reading in an awkward spot and read it once you are back down.
Open Roof Pitch & Slope ClinometerWork from the rear camera or a photo you already took. The image never leaves the device; there is no upload and no server to upload to.
Project a tile, rebar or stud layout pattern over your live camera feed to see how it will sit before you cut.
A layout mock-up you hold up to the wall. Choose stack bond, stretcher bond, herringbone or a plain grid, set the density, and the pattern draws over the live rear camera view so you can judge whether a bond direction works with the room's proportions before committing to a cut list.
Open Camera Grid OverlayMeasure real lengths from a site photo by calibrating against a bank card or a sheet of paper in the shot.
Take a photo with a card or an A4 sheet lying on the surface, drag across the reference to set the scale, then measure anything else in the same plane. It is the fastest way to get a dimension off something you have already left — a wall you photographed last week, or a detail you could not reach with a tape.
Open Photo TakeoffUse the display itself as the instrument, or build geometry on it. These are the tools that work just as well on a laptop as on a phone.
Calibrate your screen against a bank card and use it as a real ruler in millimetres or inches, plus a digital protractor.
Every display reports a different pixel density, and browser zoom changes it again — so an on-screen ruler is only honest if you calibrate it. Hold any ISO ID-1 card (a bank card, a driving licence, a hotel key) against the screen, slide until the edges line up, and the ruler is then correct for that device. The protractor shares the same calibration for angle work.
Open Screen Ruler & ProtractorModel a slab, footing, wall panel or beam in 3D and export it as DXF, OBJ or STL.
Enter three dimensions in your market's own units, orbit the model to check it reads the way you expect, and export a real CAD file — DXF for AutoCAD and drawing packages, OBJ or STL for 3D printing and visualisation. The exported geometry carries the numbers you typed with no unit conversion applied, because a file that silently changed units would be worse than one that matches your input.
Open 3D Blueprint & CAD ExportAdd and subtract feet-inches-fractions exactly — 5' 3-7/8 plus 2' 11-5/16 with no decimal rounding.
The arithmetic a carpenter does forty times a day, done the way the tape shows it. Every measurement is held as an exact count of sixty-fourths of an inch, so adding a whole cut list drifts by nothing — the classic failure this replaces is 7/8 becoming 0.87 on a phone calculator and coming back as the wrong sixteenth. A running strip shows each entry with the total after it, any line can be removed without retyping the rest, and a layout helper splits the total into equal spaces with marks you take off one tape hook.
Open Tape Measure CalculatorAnalyse a room through the device microphone. Audio is processed frame by frame in memory and never recorded to a file.
Measure room reverberation with your microphone, and estimate wall sound isolation from surface mass.
Three separate things, kept visibly separate because their trustworthiness differs. A live spectrum and relative level from the microphone; an RT60 reverberation time measured from the decay after a hand clap; and Sabine RT60 plus a mass-law STC estimate computed from geometry you type, with no microphone involved at all.
Open Acoustic AnalyzerTools that get better the more you use them, storing what you enter in this browser only.
Log the material prices you are actually quoted and see how your local market compares to the built-in baselines.
The built-in cost estimates are national baselines, and no one buys at a national baseline. Log what your supplier actually quoted and the tool tracks the gap — after a handful of entries you know whether your market runs ten percent over or under, which is the number that makes every other estimate on the site accurate for you.
Open Local Price Index