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Electrical Unit Converter (V, A, Ω)

Convert voltage, current and resistance across their SI-prefixed scales (nano to mega) — pick a quantity, type a value, see every scale at once.

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Voltage, Current, Resistance — Every Scale

Pick which quantity you're converting (voltage, current or resistance), type a value in any scale, and see it instantly converted across the full SI prefix range for that quantity. This tool only converts within one quantity's scale — it does not compute Ohm's law relationships between V, A and Ω (use the dedicated Ohm's Law calculator for that).

Frequently Asked Questions

Why doesn't this also compute V=IR?

This tool is a pure unit-scale converter (e.g. mV to kV), not a circuit calculator. For Ohm's law relationships between voltage, current and resistance, use this site's dedicated Ohm's Law calculator.

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