What is the voltage in Saint Helena, Ascension and Tristan da Cunha?

Standard outlets supply 230 V at 50 Hz; the U.S. uses 120 V at 60 Hz.

Can I use my hair dryer in Saint Helena, Ascension and Tristan da Cunha?

Only if it's dual-voltage (marked 100–240 V, or with a 120/240 switch). A 120 V-only hair dryer or straightener can burn out on 230 V, even with a converter rated too low.

Will my phone and laptop chargers work in Saint Helena, Ascension and Tristan da Cunha?

Yes. Almost all phone, laptop and camera chargers are rated 100–240 V, so they work on 230 V with a Type G plug adapter.

Africa · plug & voltage guide

Saint Helena, Ascension and Tristan da Cunha plug type and voltage

Q: Do I need a plug adapter for Saint Helena, Ascension and Tristan da Cunha?

From the U.S.: Saint Helena, Ascension and Tristan da Cunha uses Type G outlets. A Type G adapter works in all of them.

Saint Helena, Ascension and Tristan da Cunha uses Type G outlets at 230 V and 50 Hz. Saint Helena, Ascension and Tristan da Cunha uses Type G outlets. A Type G adapter works in all of them.

Verified Oct 17, 2026By Steven MoHow we check Report a correction

Plug types

Used nationwide

Voltage

230 V

U.S. outlets: 120 V

Frequency

50 Hz

U.S.: 60 Hz

Adapter from the U.S.

Yes: Type G

Check your devices

Quick answer

Saint Helena, Ascension and Tristan da Cunha uses Type G outlets. A Type G adapter works in all of them. 230 V is about twice the 120 V of the United States. Chargers marked 100–240 V (phones, laptops, cameras) only need an adapter; single-voltage devices such as hair dryers and straighteners need a converter, or bring dual-voltage ones.

Plug types: Type G
Voltage and frequency: 230 V, 50 Hz
Adapter from the U.S.: Yes: Type G
Converter: Check your devices

Do I need a plug adapter?

Traveling fromGoing to

Outlets in Saint Helena, Ascension and Tristan da Cunha

Type G

Plugs: Type G
Voltage: 230 V
Frequency: 50 Hz

Plug adapter

Yes: Type G

Saint Helena, Ascension and Tristan da Cunha uses Type G outlets. A Type G adapter works in all of them.

Voltage converter

Check your devices

230 V is about twice the 120 V of the United States. Chargers marked 100–240 V (phones, laptops, cameras) only need an adapter; single-voltage devices such as hair dryers and straighteners need a converter, or bring dual-voltage ones.

Saint Helena, Ascension and Tristan da Cunha runs at 50 Hz, the United States at 60 Hz. Chargers don't mind, but clocks and some motorized appliances may run at the wrong speed.

The outlets you'll find in Saint Helena, Ascension and Tristan da Cunha

Type G

Three rectangular pins in a triangle

Grounded · also used in UK, Ireland, Singapore, Hong Kong, UAE

What to pack for Saint Helena, Ascension and Tristan da Cunha

A Type G plug adapter, one per device you charge at the same time.
Dual-voltage hair tools, or a voltage converter if yours are 120 V only.
Leave U.S. power strips at home: most are rated for 125 V, not 230 V.

Check the label first

Look for the input line on your charger or device. INPUT: 100–240V means it works anywhere with just a plug adapter. A single number such as 120V means it only works at that voltage.

Plugs in other Africa destinations

Saint Helena, Ascension and Tristan da Cunha plug FAQ

Saint Helena, Ascension and Tristan da Cunha uses Type G.

Sources

Last verified Oct 17, 2026. Plug types and voltages rarely change, but hotels sometimes have older or international outlets.

Read how we collect and check this data, or tell us if something's out of date.

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Saint Helena, Ascension and Tristan da Cunha plug type and voltage

Quick answer

Do I need a plug adapter?

The outlets you'll find in Saint Helena, Ascension and Tristan da Cunha

Type G

What to pack for Saint Helena, Ascension and Tristan da Cunha

Check the label first

Plugs in other Africa destinations

Saint Helena, Ascension and Tristan da Cunha plug FAQ

What plug type is used in Saint Helena, Ascension and Tristan da Cunha?

Do I need a plug adapter for Saint Helena, Ascension and Tristan da Cunha?

What is the voltage in Saint Helena, Ascension and Tristan da Cunha?

Do I need a voltage converter for Saint Helena, Ascension and Tristan da Cunha?

Can I use my hair dryer in Saint Helena, Ascension and Tristan da Cunha?

Will my phone and laptop chargers work in Saint Helena, Ascension and Tristan da Cunha?

Sources

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