Convert Kilovolts per metre to Volts per inch

Convert Kilovolts per metre (kV/m) to Volts per inch (V/in) instantly and accurately.

Kilovolts per metre (kV/m)
Volts per inch (V/in)

Conversion Formula

V/in = kV/m × 25.4

About Kilovolts per metre

The kilovolt per metre (kV/m) equals 10³ V/m, the standard unit for power-frequency electric field safety limits and environmental surveys near high-voltage infrastructure. ICNIRP occupational exposure limit for 50 Hz electric fields is 10 kV/m; directly under a 400 kV transmission line the surface field reaches 10-15 kV/m; the Earth's fair-weather atmospheric field averages 0.1-0.2 kV/m. 1 kV/m = 10³ V/m.

About Volts per inch

The volt per inch (V/in) equals exactly 1 / 0.0254 V/m ≈ 39.370 V/m, used in North American high-voltage insulation specifications, PCB design rules, and cable withstand-voltage testing. ANSI/IEEE standards quote insulation withstand voltages per inch of creepage distance; PCB high-voltage layout rules specify minimum clearances rated in V/in; US power-supply withstand tests may state a 1 000 V/in dielectric rating. 1 V/in ≈ 39.370 V/m.

Quick Reference Table

Kilovolts per metre (kV/m)Volts per inch (V/in)
1 kV/m25.4 V/in
2 kV/m50.8 V/in
5 kV/m127 V/in
10 kV/m254 V/in
25 kV/m635 V/in
50 kV/m1270 V/in
100 kV/m2540 V/in

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