Version 1.0 · Build 2 · macOS
Verktum is a compact converter for Swedish verkmått, Imperial feet and inches, and metric lengths. It applies a freely chosen scale and copies the result directly into CAD or another application.
A small tool for focused work
Switch between Swedish, Imperial, and metric input without disturbing the other settings. Results can be shown in millimetres, centimetres, or metres with zero to four decimal places. The compact window can remain above your drawing or CAD application.
The interface language follows the macOS language settings and cannot be selected within Verktum. English, German, and Swedish are supported.
Historical sources
Technical drawings may combine historical Swedish measures, Imperial components, and a stated drawing scale. Verktum keeps those conversions close at hand without occupying much screen space.
“Ritning av Förstlingen”, 1897 · Swedish Railway Museum via DigitaltMuseum
Download
Verktum is supplied as a disk image. It is free for permitted non-commercial use under the licence terms below.
Build 2 update: Scale values now use the decimal separator specified by the Mac’s regional settings.
Download Verktum 1.0File verification
SHA-256 creates a cryptographic checksum—a digital fingerprint of the downloaded file. If the value calculated on your Mac matches the value below, the file arrived unchanged and was not damaged in transit. A matching checksum verifies the file’s bytes; it is not, by itself, a guarantee that any software is safe.
40cc1729e2cb2697ecbdba67140d89c37e292466058979c55196f3dde7cdfc96
To verify the disk image, open Terminal and enter:
shasum -a 256 ~/Downloads/Verktum-1.0-macOS.dmg
If the disk image is stored elsewhere, type shasum -a 256 (including the final space), drag the DMG file from Finder into the Terminal window, and press Return.
Installation
Verktum is not signed or notarised by Apple. macOS will therefore ask you to make an explicit exception the first time you open it.
See Apple’s instructions for opening an app from an unidentified developer.
Licence and disclaimer
Verktum is proprietary software © 2026 Frank Ulbrich. All rights are reserved. Private individuals may use it without charge for non-commercial purposes. Swedish public authorities may also use it for their official activities without a per-user limit. Other commercial or professional use requires prior written permission.
You may make copies for uses permitted by these terms. You may not sell, sublicense, modify, or publish Verktum, or make it available through another website or download service. Please direct other users to the official Verktum website.
Verktum is provided “as is” and “as available”. No guarantee is made that it is error-free, suitable for a particular purpose, compatible with a particular system, or continuously available. No technical support, maintenance, updates, corrections, or continued compatibility are promised.
Calculations may contain errors. You are responsible for independently verifying every result before use. Verktum must not be relied upon for safety-critical, engineering, construction, or other decisions where an incorrect result could cause loss or damage. Use of the app is at your own risk. The complete terms must be accepted on first launch.