FAQ
Is this website free?
Yes. The calculators are free to use.
How accurate are the results?
We aim for accurate calendar-aware calculations. For critical use cases, verify results with official sources.
Do you store my inputs?
By default, calculators run in your browser. If we add server-side logging in the future, it will be described in the Privacy Policy.
Why are there ads?
Ads help support hosting and development. We aim to keep the experience clean and usable.
How often do you add new calculators?
We ship new calculators and content updates regularly based on user requests and search demand.
Can I request a new calculator?
Yes. Use the Contact page and share your use case plus required input/output format.