To technically modify a machine, vehicle, or system so that it works for a new purpose, new requirements, or with new components.
example
Viele Autofahrer lassen ihre Fahrzeuge auf Gasantrieb umrüsten, um Kosten zu sparen.
Many drivers have their vehicles converted to run on gas in order to save money.
Usage tips
Separable verb
'Umrüsten' (to convert/retrofit) is a separable verb. The prefix 'um' comes at the end in a main clause. In subordinate clauses and in the infinitive with 'zu', the verb stays together.
EXAMPLE
Die Fabrik rüstet ihre Produktion auf neue Maschinen um.
The factory is converting its production to new machines.
Sentence structure with 'auf'
'Umrüsten' (to convert/retrofit) is very often used with the preposition 'auf' + accusative to indicate the target of the change. The pattern is: etwas (accusative) auf etwas (accusative) umrüsten.
EXAMPLE
Der Betrieb rüstet seinen Fuhrpark auf Elektroautos um.
The company is converting its vehicle fleet to electric cars.
Typical collocations
In a technical context, 'umrüsten' (to convert/retrofit) is often used for vehicles, machines, factories, or heating systems. Typical targets are 'auf Gasantrieb' (to gas power), 'auf erneuerbare Energien' (to renewable energy), or 'auf eine neue Software' (to new software).
EXAMPLE
Wir haben unsere alte Ölheizung auf Pellets umgerüstet.
We converted our old oil heating system to pellets.
Compare with
near_synonym
umrüsten vs ausstatten
to equip
'ausstatten' and 'umrüsten' can both mean that something gets new equipment. The difference lies in the goal. 'ausstatten' means that someone or something is given the necessary things, for example furniture, devices, or materials. 'umrüsten' means that a machine, vehicle, or system is technically modified so that it works differently or better. So you equip a new office with chairs, but you convert a car to a different type of drive. 'umrüsten' is especially used for technology and change.
umrüsten
Die Werkstatt rüstet den alten Bus auf Elektroantrieb um.
The workshop is converting the old bus to electric drive.
ausstatten
Das Hotel stattet die Zimmer vor dem Sommer mit neuen Betten aus.
The hotel is equipping the rooms with new beds before the summer.