How it works
Fill in the 3 fields above and Voltage Divider Calculator calculates the result instantly, recalculating as you change any value. It applies the formula Vout = Vin × R2 / (R1 + R2). The math runs locally in your browser — nothing is sent to a server.
Formula
Vout = Vin × R2 / (R1 + R2)Examples
- Input voltage 12 V, R1 1000 Ω, R2 2000 Ω → Output voltage: 8 V
Frequently asked questions
How do I use the Voltage Divider Calculator?
Enter your values in the 3 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Voltage Divider Calculator use?
It uses Vout = Vin × R2 / (R1 + R2). The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Voltage Divider Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Voltage Divider Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on electronics and the rest of the platform, you can use it as often as you like.
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