Calculateur de Free-Space Path Loss
Estimate free-space signal path loss in dB from distance and frequency.
Formula and method
This calculator computes Path loss directly in your browser without sending data to an external server.
Mathematical formula
- Path loss:
20 × Math.log10(distanceM)+20 × Math.log10(frequencyMHz)-27.55
Variables and parameters
- Distance (distanceM): default value 100 m.
- Frequency (frequencyMHz): default value 2400 MHz.
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 Free-Space Path Loss Calculator use?
Free-Space Path Loss Calculator evaluates outputs such as <strong>Path loss</strong> based on inputs including Distance, Frequency. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into Free-Space Path Loss 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 Free-Space Path Loss 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 Free-Space Path Loss Calculator free to use?
Yes. Free-Space Path Loss Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Free-Space Path Loss Calculator store or upload my data?
No. Free-Space Path Loss Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Free-Space Path Loss Calculator?
Free-Space Path Loss 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 Free-Space Path Loss Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Free-Space Path Loss Calculator to your own blog post or page.