Response Time
Within 24 hours
Monday – Friday (weekends may be slower)
Service Area
Worldwide
Our tools are free for everyone globally
Common Questions
Are your tools really free?
Yes — 100% free, forever. No signup, no subscription, no hidden fees.
Can I suggest a new calculator?
Absolutely! Use the form to submit your idea. We add new tools regularly.
I found an error — how do I report it?
Select "Report an Error" in the subject dropdown and describe what you found. We fix errors quickly.
Do you store any of my health data?
No. All calculations run in your browser. Nothing is sent to our servers. See our Privacy Policy.
Send Us a Message
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