Can I Use My Hair Straightener (Flat Iron) in Denmark?

Q: What plug type does Denmark use?

Denmark uses Type K/C sockets at 230V / 50Hz.

Your hair straightener (flat iron) needs a converter and an adapter in Denmark.

Adapter + voltage converter needed

Two things differ here: the voltage and the plug shape. You need both a voltage converter (transformer) rated above your device's wattage and a plug adapter to fit local sockets. Do not plug in with only a plug adapter — an adapter does not change voltage, and the wrong voltage can damage your device or cause a fire.

Device label varies
Destination grid 230⁠V / 50⁠Hz
Plug fit Type K/C adapter needed
Verdict Adapter + voltage converter needed

Device voltage: varies
Destination grid: 230⁠V / 50⁠Hz
Plug type: Type K/C adapter needed
Typical wattage: 25–90⁠W
Verdict: Adapter + voltage converter needed
Reviewed: 2026-07-17

Based on what's typical for this device — confirm on the label to be sure.

Converter must be rated for at least 113W (device watts + 25% headroom).

Next step

What to do next

Size the converter firstCalculate watts and headroom before buying anything.Read converter guidanceCheck when a converter is reasonable and when it is a bad idea.Add it to a trip checklistKeep Hair Straightener (Flat Iron) in a saved packing verdict for Denmark.

Why

A US 120V single-voltage straightener on 230V power overheats and can scorch hair or fail. Confirm "100–240V" on the plate, or carry a dual-voltage travel model. Frequency does not affect heating.

Denmark runs 230⁠V / 50⁠Hz. Denmark runs 230V at 50Hz. Its native socket is Type K, but it also accepts the Europlug (Type C). A Schuko (Type F) plug may not fully ground.

Hair Straightener (Flat Iron) in Denmark at a glance

Your hair straightener (flat iron) vs Denmark's grid
Device voltage profile	varies
Typical wattage	25–90⁠W
Destination voltage	230⁠V
Destination frequency	50⁠Hz
Destination plug types	Type K/C
Voltage mismatch	120⁠V → 230⁠V = +110⁠V
Verdict	Adapter + voltage converter needed

Plug types in Denmark: Type K, Type C

Look for "INPUT 100-240V" on the label. If it shows one voltage only, size any converter from the wattage before buying.

Shopping link

External shopping link. PlugVoltage is not currently earning from this link.

See dual-voltage hair straightener (flat iron) options

Safety check: a plug adapter only changes plug shape. It does not convert voltage, so confirm your device label before buying.

Shopping links never change the safety verdict.

Other devices & destinations

Power outlets in Denmark Using a hair straightener (flat iron) abroad Hair Dryer in Denmark Curling Iron in Denmark Hair Straightener (Flat Iron) in Sweden Hair Straightener (Flat Iron) in Norway

FAQ

Can I use my hair straightener (flat iron) in Denmark?

Your hair straightener (flat iron) needs a converter and an adapter in Denmark. Denmark runs 230⁠V / 50⁠Hz on Type K/C sockets.

Will a travel adapter let me use my hair straightener (flat iron) in Denmark?

No. A travel adapter only changes the plug shape — it does not change voltage. Your hair straightener (flat iron) would still receive 230V.

Do I need a voltage converter for a hair straightener (flat iron) in Denmark?

Yes — your device runs on a single voltage that doesn't match Denmark's 230V.

What plug type does Denmark use?

Denmark uses Type K/C sockets at 230⁠V / 50⁠Hz.

Adapter vs converter explained · Best converter for a hair straightener (flat iron)

Guidance only — not professional electrical advice. Always confirm against your device's label before plugging in. Local wiring (especially in hotels and older buildings) can vary.