Wheatstone Bridge Calculator
Find the unknown resistance in a balanced Wheatstone bridge, or the output voltage when unbalanced.
Compare Your Options And Get Clear Answers
Find the unknown resistance in a balanced Wheatstone bridge, or the output voltage when unbalanced.
Wheatstone Bridge Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Wheatstone Quick Guide
Typical values for reference.
| R1 ohms | R3 ohms | Rx ohms | Output mV |
|---|---|---|---|
| 1000 | 1200 | 1000 | -227.27 mV |
| 1000 | 1200 | 1100 | -108.70 mV |
| 1000 | 1200 | 1200 | 0.00 mV |
| 1000 | 1200 | 1300 | 100.00 mV |
| 1000 | 1200 | 2400 | 833.33 mV |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Wheatstone Bridge Calculator FAQ
Answers to common questions about this calculator.
When the ratio of the two resistors on each side is equal.
Measuring unknown resistance and sensors like strain gauges.
Vout = Vs x (Rx / (R3 + Rx) – R2 / (R1 + R2)); balance when R1 x Rx = R2 x R3.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.