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Contact Us

Bug report, calculator suggestion, or clinical feedback — we'd love to hear from you.

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Report a Bug

Found an incorrect calculation or broken feature? Report it on GitHub so we can fix it quickly.

Open GitHub Issue
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Suggest a Calculator

Need a tool that isn't here yet? Submit a feature request on GitHub with the guideline reference.

Request a Feature
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Clinical Feedback

Disagree with a clinical value or guideline reference? We take accuracy very seriously — please let us know.

Submit Feedback
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Collaborate

Are you a developer or clinician who wants to contribute a new tool or improve an existing one?

View on GitHub

❓ Frequently Asked Questions

Are these calculators free to use?
Yes — completely free, forever. No login, no subscription, no paywall. All tools work in the browser without any sign-up.
Can I use these in a clinical setting?
These tools are designed as decision-support aids for qualified healthcare professionals. They should supplement, not replace, clinical judgment. Always verify calculations independently before acting on them.
Is patient data stored anywhere?
No. All calculations happen locally in your browser. Nothing is transmitted or stored. See our Privacy Policy for full details.
Which guidelines do you follow?
Indian guidelines (NCDC, IAP, FOGSI, Jindal spirometry reference values) and international standards (WHO, NICE, BTS, CKD-EPI 2021). Each calculator page lists its specific references.
How do I request a new calculator?
Use the "Suggest a Calculator" button above to open a GitHub issue. Include the tool name, the guideline or reference you want it built on, and a brief description of the use case.