Release: DIALux evo 10.1 – download now

DIALux is the worldwide standard
in lighting design software

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Find out why DIALux is made for lighting designers and luminaire manufacturers

750K

active users worldwide

languages available

60M

luminaires used per month

DIALux is free and open. Use the software for personal, educational and commercial purposes

Find out why DIALux is free of charge. We explain our business model and will certainly answer some obvious questions.

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Get to know the functions of the software and design lighting for in- and outdoor areas with DIALux

Learn DIALux in your region and language with our certified DIALux trainers or get started for free with our DIALux tutorials.

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DIALux News

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Name	Purpose	Lifetime	Type	Provider
CookieConsent	Saves your consent to using cookies.	1 year	HTML	Website
fe_typo_user	Assigns your browser to a session on the server.	session	HTTP	Website
__DFC_4f9b69d7523603cb41afcad6ba49adfd	Used to store FastCalc settings.	15 minutes	HTTP	fastcalc.dialux.com

Name	Purpose	Lifetime	Type	Provider
_pk_id	Used to store a few details about the user such as the unique visitor ID.	13 months	HTML	Matomo
_pk_ref	Used to store the attribution information, the referrer initially used to visit the website.	6 months	HTML	Matomo
_pk_ses	Short lived cookie used to temporarily store data for the visit.	30 minutes	HTML	Matomo
_pk_cvar	Short lived cookie used to temporarily store data for the visit.	30 minutes	HTML	Matomo
_pk_hsr	Short lived cookie used to temporarily store data for the visit.	30 minutes	HTML	Matomo

Name	Purpose	Lifetime	Type	Provider
_ga	Used to distinguish users.	2 years	HTML	Google
_gat	Used to throttle request rate.	1 day	HTML	Google
_gid	Used to distinguish users.	1 day	HTML	Google
_ga_--container-id--	Persists session state.	2 years	HTML	Google
_gac_--property-id--	Contains campaign related information for the user. If you have linked your Google Analytics and Google Ads accounts, Google Ads website conversion tags will read this cookie unless you opt-out.	3 months	HTML	Google

Name	Purpose	Lifetime	Type	Provider
_gcl_au	Used by Google AdSense to experiment with advertisement efficiency.	3 months	HTML	Google
AMP_TOKEN	Contains a token that can be used to retrieve a Client ID from AMP Client ID service. Other possible values indicate opt-out, inflight request or an error retrieving a Client ID from AMP Client ID service.	1 year	HTML	Google
_dc_gtm_--property-id--	Used by DoubleClick (Google Tag Manager) to help identify the visitors by either age, gender or interests.	2 years	HTML	Google

DIALux is the worldwide standard in lighting design software