Voltage: Sweden operates on 230V, 50Hz electrical system, standard across Europe.
Plug Types: Type C (Europlug) and Type F (Schuko) - two round pins. These are the standard European plug configurations.
From North America (USA/Canada): You need both a voltage converter (120V to 230V) AND a plug adapter. However, most modern electronics (phones, laptops, camera chargers) have built-in voltage converters (check device label for "INPUT: 100-240V"). For these devices, you only need a plug adapter. Hair dryers and straighteners typically require voltage converters unless dual-voltage.
From UK/Ireland: UK three-pin plugs (Type G) require adapters for Swedish two-pin sockets. Voltage is compatible (230V), so only plug adapter needed.
From Australia/New Zealand: Need plug adapter. Voltage is compatible (230V in Australia/240V in NZ vs 230V in Sweden).
From Asia: Varies by country - Japan requires voltage converter (100V to 230V) and plug adapter. China/Singapore/Hong Kong typically only need plug adapters as voltage is compatible.
Stockholm is well-equipped for device charging:
Pro Tip: Bring a multi-port USB charger with European plug adapter - charge multiple devices from one outlet. Swedish electrical outlets are typically limited in hotel rooms.
Important: Always check your device's voltage rating before plugging in. Using 120V-only device with 230V power can cause permanent damage or fire hazard. Look for "INPUT: 100-240V" on device label or power adapter.