Resistance Unit Converter

Quick Facts

  • 1 ohm (Ω) is the SI base unit of electrical resistance
  • 1 kiloohm (kΩ) = 1,000 ohms
  • 1 megaohm (MΩ) = 1,000,000 ohms
  • Quantized Hall Resistance (QHR) = 25,812.8056 Ω (quantum standard)
  • Supports units from picoohms to statohms (24+ orders of magnitude)
  • Resistance opposes current flow in electrical circuits
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Calculation Methodology & Scientific Basis

Formula Used: Our calculator uses the standard conversion factors based on the International System of Units (SI) and established electrical engineering standards.

Source of Standards: All conversion factors are based on definitions from the International Bureau of Weights and Measures (BIPM) and IEEE electrical standards.

Precision: Results are calculated using double-precision arithmetic and rounded to 8 significant figures for optimal accuracy in practical applications.

How to Use This Resistance Converter

1Enter the Value

Input the resistance value you want to convert in the "Value to Convert" field. The calculator accepts decimal numbers, scientific notation, and both positive values.

2Select Source Unit

Choose the unit you're converting from using the "From Unit" dropdown menu. Options include ohm, kiloohm, megaohm, gigaohm, milliohm, microohm, abohm, and statohm.

3Select Target Unit

Select the unit you want to convert to using the "To Unit" dropdown menu. The calculator supports all the same units as the source selection.

4View Results

The conversion result appears instantly in the "Converted Value" field, along with the formula used and step-by-step calculation breakdown for educational purposes.

Understanding Resistance Units

Unit Symbol Conversion to Ohms Common Uses
Ohm Ω 1 Ω = 1 Ω Basic circuits, low-value resistors
Kiloohm 1 kΩ = 1,000 Ω Electronic circuits, pull-up resistors
Megaohm 1 MΩ = 1,000,000 Ω High-impedance circuits, insulation testing
Gigaohm 1 GΩ = 1,000,000,000 Ω Ultra-high impedance, specialized testing
Milliohm 1 mΩ = 0.001 Ω Power circuits, current sensing
Microohm μΩ 1 μΩ = 0.000001 Ω Precision measurements, contact resistance
Nanoohm 1 nΩ = 1×10⁻⁹ Ω Ultra-precision measurements, research
Picoohm 1 pΩ = 1×10⁻¹² Ω Quantum device characterization
Abohm ab-Ω 1 ab-Ω = 1×10⁻⁹ Ω CGS electromagnetic system (historical)
Statohm stat-Ω 1 stat-Ω ≈ 8.99×10¹¹ Ω CGS electrostatic system (historical)
Quantized Hall Resistance QHR 1 QHR = 25,812.8056 Ω Quantum resistance standard, precision metrology