Voltage Converter: US to Europe

What this number actually means

The script multiplies your US voltage by 2.2 — a rough scaling factor, not a real electrical relationship. US mains runs at 110-120V (nominal 120V); European mains runs at 220-240V (nominal 230V). Since 120 × 2 = 240, the "real" ratio is closer to 2.0, not 2.2; treat this tool's output as a ballpark, not a spec.

Worked example

120V × 2.2 = 264.0V — a bit above the actual 220-240V range you'd encounter at a European outlet.

Why voltage doesn't "convert" like a unit

Unlike length or temperature, US and EU voltage aren't two measurements of the same physical quantity — they're two different electrical standards. A US 120V device plugged into a European 230V socket doesn't need "converting," it needs an actual step-down transformer or a dual-voltage-rated device (check the label: "INPUT 100-240V" means no transformer is needed, just a plug adapter).

Standard nominal voltages

RegionNominal voltageFrequency
United States120V60 Hz
Most of Europe230V50 Hz
United Kingdom230V50 Hz

The frequency difference (60 Hz vs. 50 Hz) matters for motors and some clocks, and it's not something a voltage multiplier can account for at all.