Enter a resistance value and choose the units to convert between ohms and its mega-, kilo-, and milliohm multiples.
How to Use the Electrical Resistance Conversion Calculator
Enter a resistance value, select the unit it's currently in, and select the target unit — megaohms, kilohms, ohms, or milliohms. The result updates immediately, and the swap button reverses the from/to selection in one click.
Resistance is probably the most universally recognized electrical quantity outside a physics classroom, thanks largely to the resistor color-code chart hanging in every electronics hobbyist's memory — but the range it actually spans, from milliohms to megaohms, is bigger than the ohm-only mental model most people carry around.
base value (Ω) = entered value × from-unit factor
result = base value ÷ to-unit factor
1 MΩ = 10⁶ Ω
1 kΩ = 10³ Ω
1 mΩ = 10⁻³ ΩMilliohms matter where resistance is supposed to be nearly zero and isn't quite — a length of copper wire, a battery's internal resistance, a closed relay contact. Kilohms and megaohms sit at the other end: a microcontroller pull-up resistor commonly runs 4.7 kΩ to 10 kΩ, while a multimeter measuring the resistance across dry skin might read several hundred kilohms to a few megohms.
Precision measurement is where the unit actually matters for accuracy, not just convenience. A milliohm-meter exists as a distinct instrument from a general-purpose multimeter specifically because most multimeters can't resolve resistance changes below roughly an ohm — measuring a 5 mΩ connector contact resistance needs different hardware entirely, not just a different number on the same display.