🇰🇷 South Korea to 🇨🇳 ChinaNope, your plugs won't fit. But an adapter will.
No voltage converter needed. Both countries use 220 V.
What to pack
Plugbert recommends
Type A (US 2-pin) adapter
You need a plug adapter. Plugs from South Korea (Type F) don't fit the Type A, C and I sockets in China. A Type A (US 2-pin) adapter fits 1 of the 3 listed socket families there. For grounded devices, get a Type I (Australian) adapter for a compatible grounded outlet instead; it does not fit every listed outlet. Socket variants can differ; check the actual outlet and adapter rating.
For equipment requiring earth, choose a Type I (Australian) adapter for a compatible grounded outlet. Check its supported inputs and rated load. A two-pin output cannot provide an earth connection.
Tip: a "universal" travel adapter may be useful for several destinations. Check its wall-side plugs, grounding and power limits against your trip.
Voltage & frequency
🇰🇷 Home
220 V
60 Hz
🇨🇳 There
220 V
50 Hz
The destination may use a different frequency (60 → 50 Hz). Check your device's input rating for the local frequency; a plug adapter does not change it.