220240V

220240V is a designation used to describe the standard range of single-phase mains electricity voltages used in many regions of the world. Rather than a single fixed value, 220–240V encompasses nominal voltages such as 220V, 230V, and 240V. Appliances and equipment rated for 220–240V are designed to operate across this range of supply voltages.

In most 220–240V systems, the supply frequency is 50 Hz, though some countries within this range use 60 Hz. Voltage is typically regulated within regional standards to accommodate supply variations, with a common tolerance of around ±10% in many jurisdictions.

Geographically, 220–240V is prevalent in Europe, large parts of Africa and Asia, and in Australia and several Pacific nations. Historically, some regions operated at 220V, others at 240V; many migrated to a nominal 230V standard during late 20th-century harmonization efforts. The result is a practical range still labeled as 220–240V on many devices.

Because plug shapes, outlets, and safety norms differ by country, equipment designed for 220–240V and 50 Hz may require regional adapters or voltage converters when used abroad. Some modern appliances and power supplies are dual‑voltage (for example 100–240V) and can automatically adapt, while others are fixed to a specific voltage range. Always check the device nameplate for acceptable input voltage and frequency.