Perform quantity takeoffs from construction PDF drawings with area and length measurements.
This tool turns a PDF construction drawing into a measuring surface. You open the plan sheet inside the tool, set a scale by marking two points a known distance apart, such as a printed dimension line, then trace room outlines, slabs, or wall runs directly on the page with clicks. It converts your traced geometry into real-world area and length using that scale. The detail people most often miss is that the scale has to be reset for every sheet, and again whenever a sheet mixes scales, since re-tracing without recalibrating silently produces the wrong quantities.
A concrete input and expected output from the current implementation.
Input
Calibrate: click both ends of a wall dimension line labeled 24 ft on the drawing and enter 24. Then trace the room outline by clicking its four corners, which on the calibrated drawing span 20 ft by 15 ft.
Expected output
Area: 300 sq ft. Perimeter: 70 ft.
A 20 ft by 15 ft rectangle has area 20 x 15 = 300 sq ft and perimeter 2 x (20 + 15) = 70 ft; the tool applies the calibrated scale to the traced vertices to get these figures.
You click two points on the rendered PDF that correspond to a distance you already know from the drawing, such as a printed dimension line or a scale bar, and type in that real-world value. The tool divides the real distance by the on-screen pixel distance between your two clicks to get a units-per-pixel ratio, applied to every measurement taken on that page until you recalibrate.
Clicking a sequence of vertices over a room, slab, or wall run builds a polygon or polyline on top of the PDF page. For a closed shape the tool computes the enclosed area and perimeter from those vertex coordinates; for an open path it sums the segment lengths. Both results are scaled by the calibration ratio and reported in your chosen unit.
No. The tool has no way to parse scale text or notation printed in a title block, so scale must always be set manually: click two points a known distance apart on the drawing and type in that real-world distance before tracing anything else.
No. Rendering the PDF and computing the traced areas and lengths happen against the file you open, so nothing about the drawing needs to leave your machine or pass through an external server during the measurement process itself, unlike tools that require a file upload.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
Calculate percentages, percentage change, and what percent one number is of another with step-by-step breakdowns.
Calculate tips and split bills between multiple people with customizable tip percentages and rounding options.
Calculate monthly payments, total interest, and generate amortization schedules for loans and mortgages.
Calculate Body Mass Index from height and weight with category classification and healthy range guidance.
Calculate sale prices, savings amounts, and final costs after single or stacked percentage discounts.
Compute mean, median, mode, standard deviation, variance, and other descriptive statistics from a data set.