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Thevenin Equivalent Circuit Calculator
Find Thevenin voltage and resistance for a voltage divider with a source.
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Vth
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Find Thevenin voltage and resistance for a voltage divider with a source.
Thevenin Equivalent Circuit Estimator
Enter your numbers below for an instant estimate.
0
π‘ Tip: Divider output and R1||R2.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Thevenin Quick Guide
Typical values for reference.
| V | R1 ohm | R2 ohm | Vth |
|---|---|---|---|
| 5 | 100 | 100 | 2.50 V |
| 12 | 100 | 200 | 8.00 V |
| 12 | 1000 | 2000 | 8.00 V |
| 24 | 470 | 1000 | 16.33 V |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Thevenin Equivalent Circuit Calculator FAQ
Answers to common questions about this calculator.
Divider.
It gives a quick estimate of thevenin equivalent circuit from the values you enter.
No. It is a planning estimate, so check important figures with a professional or official source.
Yes. Edit any field and the result updates when you calculate.