I'm traveling fromto

Do I need an adapter when traveling from Mayotte to Denmark?

No. Your Type C and E/F plugs fit outlets in Denmark. Voltage there: 230V.

Your plugs

230V, 50Hz

No adapter needed

Your Type C and E/F plugs fit outlets in Denmark.

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No adapter, but worth packingMulti-port USB-C chargerDual-voltage, and charges three devices from one outlet.Shop

230V, 50Hz

Your Type C and E/F plugs fit outlets in Denmark, so your chargers plug straight into the wall.

Outlets in Denmark supply 230V, just like at home. Everything you pack will run normally.

Most outlets are the Danish Type K. Type E and F outlets are allowed but still uncommon, and an E or F plug in a Type K outlet isn't earthed.

Everything to sort before you fly from Mayotte.

No plug adapter: your plugs fit the Type K, F, and E outlets in Denmark.
Nothing to convert: Denmark runs at 230V, like home.
A power bank in your carry-on, not your checked bag. Under 100Wh needs no airline approval.
One multi-port USB-C charger, so a single outlet charges everything.
Most outlets are the Danish Type K. Type E and F outlets are allowed but still uncommon, and an E or F plug in a Type K outlet isn't earthed.