RC cutoff frequency
Calculate the -3 dB cutoff of an ideal first-order RC filter. Your inputs stay in this browser tab.
Your result
A little input. A useful result.
Your result will appear here.How to use rc cutoff frequency
Calculate the -3 dB cutoff of an ideal first-order RC filter. This free tool runs locally after you choose to start.
- Enter your own values, or start with the visible example.
- Adjust resistance (ohms), capacitance (nanofarads) as needed.
- Choose the action button. Review the result, then copy text or download a file when available.
- Choose Clear all when finished to remove inputs and results from the interface.
Limits, without the small print.
Use consistent units as labeled. Floating-point results are estimates. Ideal unloaded first-order filter.
One job runs at a time. You can cancel it; jobs stop after 30 seconds. Browser and device capabilities affect performance.
Understand the safeguards →What this tool does
Cutoff = 1/(2πRC).
Example input
Resistance (ohms): 1000; Capacitance (nanofarads): 100
Example result
{
"hertz": 1591.5494309189535
}A couple of useful answers.
Does rc cutoff frequency upload my data?
No. This tool processes your input in a browser worker. Your text and files are not sent to an application server. The static host receives page and asset requests; see our privacy explanation.
Is this tool free for work and study?
Yes. No account, paid API, usage subscription or watermark fee is required. You remain responsible for your content rights and checking results. Hosting providers and their free tiers are separate from this open-source software.
What should I check before relying on the result?
Use consistent units as labeled. Floating-point results are estimates. Ideal unloaded first-order filter. Review important outputs against the source, especially financial, legal, identity, medical and research calculations.