Voltage Divider Calculator
Calculate voltage divider output
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How to Use Voltage Divider Calculator
Enter Vin
Enter input voltage.
Enter resistors
Enter R1 and R2 values.
Calculate
See output voltage.
Why Choose AllTools Voltage Divider Calculator?
- ✓ Vout calculation
- ✓ R1/R2 solver
- ✓ Circuit diagram
- ✓ Current calculation
- ✓ Power display
- ✓ No data stored
Why Use This Tool
- ★ All calculations happen locally in your browser
- ★ Completely free with no usage limits
- ★ No account or registration required
- ★ Based on established scientific formulas and constants
- ★ Works on any device with a modern browser
Related Resources
Frequently Asked Questions
What is a voltage divider? ▼
Two resistors in series that produce an output voltage that is a fraction of the input: Vout = Vin × R2/(R1+R2).
Does load affect the output? ▼
Yes. A voltage divider works best with high-impedance loads. Low-impedance loads draw current and reduce the output voltage.
Does this work on mobile? ▼
Yes. All AllTools tools are fully responsive and work on phones and tablets.
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