Tools and calculators

All our free VELUX tools to help you choose the right solution.
Discover our tools
Replacement configurator
Quickly and easily find out which New Generation roof window to use when replacing your customers' windows.
Find replacement solution
Roof window price configurator
Configure a single roof window solution in seven easy steps. View all sizes, operation types, and flashings to generate an instant product quote.
Configure roof window
Daylight Visualizer
The VELUX Daylight Visualizer accurately calculates daylight levels to make complex analysis accessible at the start of a building project.
Discover more
Dealer Extranet
With VELUX Dealer Extranet, you get access to a secure online ordering system to process and track orders, get quotations, and view account details.
Open Dealer Extranet
Technical resources
Find easy-to-use installation instructions and video guides, BIM objects and CAD drawings as well as further reference material for your project.
Find technical resources
Digital brand guidelines
The following guides allow you to use the VELUX trademark and brand name - correctly and in confidence - as part of your own marketing plans.
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VELUX daylight calculator – get the daylight ratio right
Discover the right number of VELUX roof windows to achieve the optimal daylight in your extension, renovation or loft conversion
Get started