Resistance
Calculate Resistance instantly with the exact formula and a worked example. Free online calculator — no signup.
Resistance
R₁Ω
R₂Ω
R₃Ω
Resistance
68.75Ω
R₁
100Ω
R₂
220Ω
R₃
0Ω
Resistance
68,75Ω
More about: Resistance
What it calculates
The “Resistance” calculator computes Resistance in Ω from 3 parameters: r₁ (Ω), r₂ (Ω), r₃ (Ω).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters R₁ = 100 Ω, R₂ = 220 Ω, R₃ = 0 Ω the result is 68.75 Ω (1/R = 1/R₁ + 1/R₂ + 1/R₃).
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.