to convert / retrofit
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to convert / retrofit
To technically modify a machine, vehicle, or system so that it works for a new purpose, new requirements, or with new components.
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.
to re-equip
In a military context, to equip an army or unit with new equipment, weapons, or technology.
Die Luftwaffe wurde auf einen neuen Flugzeugtyp umgerüstet.
The air force was re-equipped with a new type of aircraft.
'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.
Die Fabrik rüstet ihre Produktion auf neue Maschinen um.
The factory is converting its production to new machines.
'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.
Der Betrieb rüstet seinen Fuhrpark auf Elektroautos um.
The company is converting its vehicle fleet to electric cars.
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).
Wir haben unsere alte Ölheizung auf Pellets umgerüstet.
We converted our old oil heating system to pellets.
to equip
Both words describe equipping something for a specific purpose. Ausrüsten means providing the necessary devices or tools; umrüsten, by contrast, means technically modifying an existing machine, vehicle, or system. Use ausrüsten for new equipment and umrüsten for a technical conversion.
Die Firma rüstet die alte Anlage für die Herstellung eines neuen Produkts um.
The company is converting the old system to manufacture a new product.
Wir rüsten das Team für die Wanderung mit Helmen, Karten und Taschenlampen aus.
We are equipping the team with helmets, maps, and flashlights for the hike.
