Vietnam.

220 V · 50 Hz on Type A, Type C, Type B.

Most wall outlets are universal two-pin fittings that accept both flat Type A blades and round Type C pins, with earthed Type B in newer hotels and offices. Shape adapters are rarely needed for American or European plugs, but the supply is 220 V at 50 Hz, so single-voltage 110 V devices will not survive it.

The voltage window

A nominal 220 V supply may legitimately sit anywhere between 198 and 242 V (±10%). Dual-voltage gear (marked 100–240 V) shrugs at all of it.

Grid facts verified against IEC World Plugs — Vietnam. Prose is our own.

Calling codes by Dialchord

From usKeychord— keyboard shortcuts for every app

Coming here from somewhere else?

Plug straight in — Vietnam runs 220 V 50 Hz on Type A, Type C, Type B — and your 120 V appliances need to be dual-voltage or transformed, adapter or not.

Faces drawn to scale from pin dimensions · verdicts are physical fit + voltage math, not safety advice — when in doubt, ask the hardware store, not the internet.