Free tool

Current Divider Calculator

Enter the total current and the resistance of each branch. The calculator estimates the current through each parallel path and the overall equivalent resistance.

Tools

Calculate the current taken by each branch of your circuit

Add the resistances of the parallel branches and get the current split from the total current supplied to the resistive network.

Current Divider Calculator

Work with resistive branches in parallel. The result shows the current in each branch and the equivalent resistance of the network.

Introduce una corriente total valida y al menos una resistencia mayor que cero.
Summary--The equivalent resistance and the current in each parallel branch will be shown.

What the current divider does

In a resistive network in parallel, current splits inversely to each resistance.

Useful relations
  • 1 / Req = 1/R1 + 1/R2 + ... + 1/Rn
  • In = Itotal x (Req / Rn)
Quick tips
  • Cuanto menor es la resistencia de una rama, mayor corriente absorbe.
  • La suma de corrientes de las ramas debe coincidir con la corriente total.
  • Este modelo es ideal para resistencias puras y sin cargas adicionales.

Quick guide

How to read a current divider without losing sight of the real circuit

A current divider is especially useful when you compare parallel branches, estimate current draw or verify whether a resistive network is splitting current the way you expected during prototyping.

Lectura rapida

  • La rama con menor resistencia absorbe mas corriente.
  • La resistencia equivalente siempre es menor que la rama mas baja.
  • La suma de corrientes parciales debe igualar la corriente total.
  • Conviene revisar el resultado con las tolerancias reales de los componentes.

Parallel equivalent

The total conductance is obtained by summing the conductance of each branch.

1 / Req = 1/R1 + 1/R2 + ... + 1/Rn

Current per branch

The current in each branch depends on the relative weight of each resistance.

In = Itotal x (Req / Rn)

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FAQ

Frequently asked questions

A short reference for the usual questions when you split current across parallel resistive branches.

What does this tool calculate?

It calculates the current through each parallel branch from the total current and the entered resistances.

Can I add several branches?

Yes. You can create as many resistive branches as you need and the calculator will update the split for all of them.

Does it work for non-resistive loads?

As a quick approximation it can help, but the real split changes when the impedance is not purely resistive.

Is the calculator free?

Yes. You can use it online without installing anything.

Next step

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