Calculateur de Voltage Divider
Calculate the output voltage of a two-resistor voltage divider.
Formula and method
This calculator computes Output voltage (across R2) directly in your browser without sending data to an external server.
Mathematical formula
- Output voltage (across R2):
vin × (r2 ÷ (r1+r2))
Variables and parameters
- Input voltage (vin): default value 12 V.
- R1 (r1): default value 1000 Ω.
- R2 (r2): default value 2000 Ω.
Some formulas are undefined for certain input combinations (such as division by zero or logarithms of non-positive numbers). In those cases the live tool displays an alert instead of NaN.
Embed this tool
Paste this snippet into your own site or blog post to embed a live, working copy of this tool. It links back to the full page on SpecWhale.
Frequently asked questions
What equation and variables does Voltage Divider Calculator use?
Voltage Divider Calculator evaluates outputs such as <strong>Output voltage (across R2)</strong> based on inputs including Input voltage, R1, R2. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into Voltage Divider Calculator?
If an input combination is mathematically undefined (such as division by zero or negative square roots), SpecWhale alerts you gracefully rather than returning invalid NaN outputs.
Are my calculations in Voltage Divider Calculator saved or private?
All calculations are 100% private and run locally in your Web browser. Your numbers are never uploaded to any server, but can be saved locally to your device or exported as CSV/JSON.
Is Voltage Divider Calculator free to use?
Yes. Voltage Divider Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Voltage Divider Calculator store or upload my data?
No. Voltage Divider Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Voltage Divider Calculator?
Voltage Divider Calculator uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.
Can I embed Voltage Divider Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Voltage Divider Calculator to your own blog post or page.