Series Resistance Calculator
Calculate the total resistance of up to three resistors connected in series by adding their values (R = R₁ + R₂ + R₃).
Formula: R = R₁ + R₂ + R₃
About Series Resistance Calculator
Series Resistance Calculator is a free online calculator that gives you an instant, accurate result as you type. Calculate the total resistance of up to three resistors connected in series by adding their values (R = R₁ + R₂ + R₃).
The calculation uses the standard formula R = R₁ + R₂ + R₃ and updates live with every change to the inputs. Everything runs client-side in your browser — fast, private, and free to use as often as you like.
In a series circuit the same current flows through every resistor, so total resistance is simply the sum of the individual values.
Frequently Asked Questions
Is Series Resistance Calculator free to use?
Yes. Series Resistance Calculator is completely free, with no sign-up, no downloads, and no usage limits. You can use it as many times as you like on any device with a web browser.
How accurate is this calculator?
The calculator applies the standard formula (R = R₁ + R₂ + R₃) with full floating-point precision and rounds only the displayed result. For most practical purposes the results are exact.
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