1 kΩ, 2 kΩ, and 3 kΩ Resistors in Parallel
Three resistors of 1 000 Ω, 2 000 Ω, and 3 000 Ω in parallel produce approximately 545 Ω.
How to use this tool
- Enter resistor r₁, resistor r₂, resistor r₃ (optional) and resistor r₄ (optional) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your parallel resistance and the full breakdown beneath it.
With three different resistors in parallel, the combined resistance is always dominated by the smallest value in the group.
Frequently asked questions
- Why is parallel resistance always less than any individual resistor?
- Adding a parallel path gives current more routes to flow, increasing total conductance (1/R). Higher conductance = lower resistance.
- What is the formula for exactly two resistors in parallel?
- R = R₁ × R₂ / (R₁ + R₂). Quick shortcut: two equal 10 Ω resistors in parallel give 5 Ω.