Voltage & Frequency: Croatia uses 230V, 50Hz AC electrical standard (European standard). If your device is rated for 110V only (some North American devices), use a converter; most chargers accept 100-240V.
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 a plug adapter for Type C/F, and a voltage converter only if the device is not rated 100-240V (most phone and laptop chargers are). 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.