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Kirchhoffs Voltage Law Calculator
Find the voltage across an unknown element in a loop.
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Unknown drop
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Find the voltage across an unknown element in a loop.
Kirchhoffs Voltage Law Estimator
Enter your numbers below for an instant estimate.
0
๐ก Tip: V3 = Vs – V1 – V2
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
Kirchhoffs Quick Guide
Typical values for reference.
| Source voltage (V) | Drop across R1 (V) | Drop across R2 (V) | Unknown drop |
|---|---|---|---|
| 12 | 5 | 4 | 3.00 V |
| 24 | 10 | 8 | 6.00 V |
| 5 | 1 | 1.5 | 2.50 V |
| 9 | 3 | 3 | 3.00 V |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Kirchhoffs Voltage Law Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real conditions vary, so treat it as a guide.
V3 = Vs – V1 – V2
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.