Voltage & Frequency: Croatia uses 230V, 50Hz AC electrical standard (European standard). If your device runs on 110V (North American standard), using it without a converter will damage the device or create fire hazard.
Plug Type: Croatia uses European Type C and Type F plugs (two round pins):
These plugs differ from British (Type G), Swiss (Type J), and American (Type A/B) plug standards.
What You Need: If traveling from USA, Canada, or Mexico, you need both: voltage converter (230V down to 110V) AND plug adapter for Type C/F. Combination adapter-converters available online (~€20-30) and at electronics shops.
Where to Buy: Airport has travel shops selling adapters (expensive). Better selection and pricing at electronics stores in Split or major supermarket chains. Budget supermarkets and DIY stores offer competitive prices.
Rechargeable Devices: Modern phones, tablets, and laptop chargers often support 100-240V (check label). For these, you only need Type C/F plug adapter, not voltage converter.
USB Charging: Growing number of hotels and accommodations provide USB charging ports. Ask reception for adapters if devices lack Type C/F plugs.
Power Bank Recommendation: Portable power bank simplifies charging without finding outlets. Very affordable (~€10-20) and useful for day trips away from accommodation.