Health Calculators
Calcium Intake Estimator
Adult calcium RDA vs intake.
How it works
Three steps, no friction.
- Step 1
Enter your measurements
Switch between metric and imperial — the form adapts to your unit choice.
- Step 2
Run the calculation
Published reference formulas run entirely in your browser — the report names the one used.
- Step 3
Review your report
Get the result, category band, healthy range, and a downloadable Markdown/CSV/JSON report.
Benefits
Why teams choose WebRul.
- 100% client-side — no health data ever leaves your browser
- Every report names the published formula or reference range it uses
- Inputs are range-checked — impossible values are rejected, not silently adjusted
- Copy, download, and print-friendly reports (Markdown, CSV, JSON, TXT)
- Accessible, keyboard-first UI with reduced-motion support
FAQ
Questions, answered.
Is my content stored or logged?
No. Everything runs client-side in your browser. Nothing is uploaded, cached, or logged.
What file formats can I paste?
Plain text, Markdown, or HTML — the tool strips markup where it makes sense.
Can I export the results?
Yes. Every run generates copyable text plus downloadable artifacts.
Related tools
Keep the flow going.
Need something custom?
Talk to the WebRul team about custom integrations, private tooling, or enterprise access.