Calculateur de Lens Field Of View
Estimate horizontal field of view from sensor width and focal length.
Formula and method
This calculator computes Horizontal field of view directly in your browser without sending data to an external server.
Mathematical formula
- Horizontal field of view:
2 × Math.atan(sensor ÷ (2 × focal)) × 180 ÷ π
Variables and parameters
- Sensor width (sensor): default value 36 mm.
- Focal length (focal): default value 35 mm.
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 Lens Field Of View Calculator use?
Lens Field Of View Calculator evaluates outputs such as <strong>Horizontal field of view</strong> based on inputs including Sensor width, Focal length. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into Lens Field Of View 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 Lens Field Of View 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 Lens Field Of View Calculator free to use?
Yes. Lens Field Of View Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Lens Field Of View Calculator store or upload my data?
No. Lens Field Of View Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Lens Field Of View Calculator?
Lens Field Of View 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 Lens Field Of View Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Lens Field Of View Calculator to your own blog post or page.