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How We Can Help
Report a Bug
Found a calculation error or broken feature? Tell us exactly what you entered and what happened. We fix bugs fast.
Suggest a Calculator
Have an idea for a health tool we don't have yet? We actively add new calculators based on user requests.
Accuracy Concerns
If you believe a formula is incorrect or outdated, we want to know. We take scientific accuracy seriously.
Partnership Inquiries
Healthcare organizations, publishers, and educators interested in embedding our tools or collaborating.
Quick Answers
Are all tools really free? ▼
Yes — completely free, forever. No premium tier, no subscriptions. We believe health information should be accessible to everyone.
Do you store my health data? ▼
No. All calculations happen in your browser. We never receive, store, or see your health inputs. See our Privacy Policy.
Can I embed tools on my website? ▼
Contact us with details about your site — we're open to partnerships with health platforms, clinics, and publishers.