Resistance Converters
Convert between resistance units used in resistor selection, PCB design, and power-electronics shunt analysis. The same exact scaling also supports high-resistance insulation and leakage workflows with stable, reversible conversions.
Explanation
Electrical resistance quantifies how strongly a component opposes electric current. The SI unit is the ohm (Ω), defined by the exact relationship Ω = V/A. Prefix scaling is exact: 1 mΩ = 10⁻³ Ω, 1 kΩ = 10³ Ω, 1 MΩ = 10⁶ Ω, and 1 GΩ = 10⁹ Ω. These conversions are purely multiplicative with no additive offsets. Every factor in this hub is derived by reducing units to ohms and then applying exact SI prefix powers. For clarity, resistance conversions are grouped into base-to-prefix, electronics-scale, and high-resistance relationships.
Frequently Asked Questions
What is electrical resistance?
Electrical resistance measures how strongly a material or component opposes the flow of electric current.
What is the SI unit of resistance?
The SI unit is the ohm (Ω).
What does 1 ohm represent?
One ohm means one volt of potential difference drives one ampere of current (Ω = V/A).
How do kΩ and MΩ relate?
They are exact decimal prefixes: 1 MΩ = 1000 kΩ.
Why are milliohms used in power systems?
Power paths, shunts, and high-current connections often have very low resistance, so milliohms provide practical precision.
Are resistance conversions multiplicative?
Yes. SI prefix conversions are purely multiplicative with no additive offsets.
How do I switch direction?
Use the switch button to navigate directly to the mirror page for the reverse conversion.