Desktop measurement tool for Windows

Measure plans and drawings
quickly. Accurately.

Pull exact areas and lengths off any architectural or technical drawing — digital, scanned, even bad-quality PDFs. No expensive drafting software. Nothing to learn.

7‑day free trial Windows 10 / 11 EN · PL
application window · 16:9
Comprobare main window — sailboat general arrangement drawing loaded, with the measurement results panel ready on the right
Built for
Estimators Contractors Architects Engineers Surveyors
DXF · PDF · CPB
What it does

Three things, done well — areas, lengths, scans.

Open a drawing, set the scale, click around the parts you care about. Comprobare tracks every measurement with units, factors, and group totals so you don't have to keep notes on the side.

01 / AREAS

Measure areas

Rooms, floors, walls, plots of land — anything with an outline. Trace the perimeter and the area is calculated instantly, with optional height and multiplier factors.

AREA0.00
02 / LENGTHS

Measure lengths

Pipes, cables, edges, perimeters, distances. Click point to point, or follow a polyline. Totals add up across whatever segments you've drawn.

LENGTH0.00 m
03 / SCANS

Convert scans & bad PDFs

Photographed paper plans, scanned documents, low-quality PDFs — all become measurable drawings. Three quality settings to match what you've got.

QUALITY low  ·  med  ·  high
Comprobare — a hull body plan with measured areas and lengths organised into named groups (Railings, Room 1), each with its own subtotal and a grand total
0.00
Areas — one total
0.00 m
Lengths — one total
2
Named groups
COMPROBARE.cpb · 1:1 · unit mm → m
Everything you need

Built for real takeoff work, not demos.

The features estimators actually ask for, surfaced as plain buttons — no drafting experience required.

Subtract zones automatically

Mark off doorways, columns, openings, or any zone you don't want counted — they're subtracted from the totals automatically.

Group measurements

Combine related items — "all windows on floor 1", "all pipes in basement" — into a single named group with one total.

One project, one file

Drawing, measurements, groups, settings — all kept in a single .cpb file. Reopen tomorrow and pick up where you left off.

Polish + English

Full localisation in both languages. Switch the entire interface from Settings — menus, dialogs, status bar, exports.

Light or dark theme

Match the time of day and your monitor. Both themes share the same exact contrast ratios for measurements and dimension lines.

Export & print

Copy measurements to Excel, export the marked-up drawing as PDF, save as DXF, or print directly with measurement results inline.

How it works

From file to figure in under five minutes.

A four-step flow that's the same whether you're measuring a 2-bedroom apartment or a 90-metre ship hull.

01STEP

Open or convert your drawing

Drop in a DXF or PDF. For paper plans, "Convert PDF" turns a scan into a clean, measurable drawing — pick low / med / high to match scan quality.

DXF · PDF · scanned PDF · CPB
Comprobare with a body plan drawing loaded and ready to measure
02STEP

Set the scale once

Calibrate from a known dimension on the drawing, or let Detect Scale set it automatically. Comprobare locks the scale into the project — every measurement after that is in real units.

Calibrate · Detect Scale
The Scale tab with Calibrate and Detect Scale buttons
03STEP

Click around the parts you care about

Trace areas with a polygon, lay down lengths point to point, mark off zones to subtract. Each measurement appears in the right-hand panel with its area, length, factor and total — colour-coded.

Areas · lengths · factors · subtractions
Four measured areas listed in the measurement results panel with a running total of 29.52 square metres
04STEP

Save, reuse, export

Save the whole project as .cpb. Save snapshots of measurement sets to the memory panel — reopen them next time, or load them onto a similar drawing in seconds.

.cpb · snapshots · copy · export PDF
The measurements memory panel with a saved measurement set ready to reload
Who it's for

Anyone who pulls quantities off a drawing.

If "expensive drafting software" or "a week of training" was the only thing standing between you and accurate numbers — that's exactly the gap Comprobare fills.

Estimators
Bid faster with exact takeoff quantities, not ruler-on-paper guesses.
Contractors
Order the right amount of material the first time. Re-measure changes in seconds.
Architects
Verify areas on plans without opening a full drafting seat just to count m².
Engineers
Quantify pipes, cables and routes directly from technical drawings.
Surveyors
Digitise scanned plans and pull lengths and areas from any source drawing.
Why people use it

Four things, every time.

01 — FAST

Minutes,
not hours.

Measure a typical floor plan in the time it takes to make coffee. No menu-diving, no learning curve.

02 — ACCURATE

Exact numbers, every time.

Snap-to-line, fixed scale, sub-millimetre precision. No manual ruler errors, no rounding to the nearest brick.

03 — SIMPLE

Clear buttons, no drafting software.

If you can use a web browser, you can use Comprobare. The whole interface is a labelled ribbon — that's it.

04 — KEPT TOGETHER

One file, one place.

Drawing, measurements, groups, settings — all in one .cpb. Email it, archive it, reopen it.

Pricing

Simple pricing. Yours to keep.

No tiers, no per-feature paywalls. Test it free for 7 days, then license per station — once for life, or yearly.

Free trial
7 days, free

Use the full app free for 7 days to try it on your own drawings. No credit card required.

Download latest version
Standard
€100 / year / station

One workstation, one year, every feature. Free updates for the duration of your license.

  • All measurement tools
  • PDF / DXF / scan import
  • Export to PDF, copy to Excel
  • Free version updates for 12 months
  • Email support
Buy License

Secure payment · card or transfer via PayU · VAT invoice

Need a quote for a team or company-wide license? Email us

FAQ

Before you buy — the usual questions.

What counts as a station?+

One license activates Comprobare on one Windows computer (workstation). If you need it on two machines, you need two licenses — or email us for a team quote.

Can I move my license to a new computer?+

Yes. Email us from your license email and we'll reset the activation so you can activate the same key on the new machine.

What happens when the annual license expires?+

The app asks for a valid license again — nothing is deleted. Your .cpb project files stay on your disk, and a renewed key picks up right where you left off. The lifetime license never expires.

How do I get the license key?+

You pay securely via PayU (card or bank transfer). Your license key and a VAT invoice are emailed to you right after the payment is confirmed.

Do I get an invoice?+

Yes — every purchase comes with a full VAT invoice issued to the billing details you enter on the order form.

Can I get a refund?+

The 7-day trial is the full application, so you can test everything before paying. Because of that, activated licenses are non-refundable except where required by law or when a technical issue we can't resolve prevents use — details in the purchase terms.

Ready to measure your first plan?

Download for Windows · 7-day free trial · no credit card · full features.

Download latest version See pricing