Calculateur de Rainwater Collection
Estimate rainwater collection from roof area and rainfall.
Formula and method
This calculator computes Collected water directly in your browser without sending data to an external server.
Mathematical formula
- Collected water:
area × rain × 0.623 × efficiency ÷ 100
Variables and parameters
- Catchment area (area): default value 1000 ft².
- Rainfall (rain): default value 1 in.
- Efficiency (efficiency): default value 85 %.
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 Rainwater Collection Calculator use?
Rainwater Collection Calculator evaluates outputs such as <strong>Collected water</strong> based on inputs including Catchment area, Rainfall, Efficiency. Check the Mathematical Method section for the explicit formula.
What happens if I enter invalid or zero values into Rainwater Collection 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 Rainwater Collection 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 Rainwater Collection Calculator free to use?
Yes. Rainwater Collection Calculator is completely free, has no usage limit, and does not require an account, email, or API key.
Does Rainwater Collection Calculator store or upload my data?
No. Rainwater Collection Calculator calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Rainwater Collection Calculator?
Rainwater Collection 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 Rainwater Collection Calculator on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Rainwater Collection Calculator to your own blog post or page.