INTERNATIONAL ELECTRICITY
United States: plugs, voltage and frequency
A / B sockets · 120V · 60Hz. Single-voltage 220–240V appliances need suitable conversion or should not be used.
Pricing checked 15 July 2026Last checked 2026-07-15 · verify decisive terms directly
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Research profileIndependent dataCountry reference
| Country | Plug types | Voltage | Frequency | Traveller warning |
|---|---|---|---|---|
| Japan | A, B | 100V | 50Hz | Japan uses both 50Hz and 60Hz regions; verify frequency-sensitive equipment. |
| Nepal | C, D, M | 230V | 50Hz | Socket availability and grounding can vary; a quality adapter is useful. |
| Thailand | A, B, C, O | 230V | 50Hz | Multi-standard sockets exist, but grounding and fit can be inconsistent. |
| United States | A, B | 120V | 60Hz | Single-voltage 220–240V appliances need suitable conversion or should not be used. |
| United Kingdom | G | 230V | 50Hz | Use a fused Type G adapter where appropriate. |
| Australia | I | 230V | 50Hz | Check that imported devices accept 230V. |
| France | C, E | 230V | 50Hz | Grounded compatibility differs between Type E and some universal adapters. |
| Germany | C, F | 230V | 50Hz | High-power devices need an appropriately rated grounded adapter. |
| Singapore | G | 230V | 50Hz | Use a properly rated Type G adapter; do not overload multi-port units. |
| United Arab Emirates | G | 230V | 50Hz | Check hotel sockets and grounding rather than relying on multi-standard fit. |
| Canada | A, B | 120V | 60Hz | Check 120V compatibility for devices bought in 230V markets. |
| India | C, D, M | 230V | 50Hz | Socket type and quality vary; select an adapter for the exact outlet. |
DO NOT CONFUSE THESE
Six separate compatibility questions
Plug shape
Whether the pins physically fit the socket.
Voltage
Electrical potential; incompatible single-voltage devices may be damaged.
Frequency
50Hz or 60Hz can affect motors, clocks and some appliances.
Transformer / converter
Changes voltage for a suitable load; it is not the same as an adapter.
Universal supply
An input label such as 100–240V, 50/60Hz usually supports both systems within its rating.
USB-C Power Delivery
The charger, cable and device must negotiate a supported voltage/current profile.
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UNITED STATES ELECTRICITY QUESTIONS
Frequently asked questions
No. A plug adapter only changes the physical pin shape to fit United States's Type A/B sockets. Single-voltage 220–240V appliances need suitable conversion or should not be used. If your device is not rated for 120V, you need an actual voltage converter, not just an adapter.