About DateCalc.app
DateCalc.app is a collection of free, instant date and time calculators. No sign-up, no ads, no tracking — just fast, accurate tools that work entirely in your browser.
What we offer
Age calculators, baby age trackers, dog & cat age converters, day counters, week numbers, business day calculators, holiday countdowns, and historical year tools — all available in 7 languages: English, French, Spanish, Portuguese, German, Italian, and Polish.
How it works
Every calculation runs directly in your browser using JavaScript. No data is ever sent to a server. The dates you enter stay on your device.
Who made this
DateCalc.app is an independent project built to provide reliable, fast date tools to everyone, for free. We believe useful utilities should be accessible without paywalls or forced accounts.
Contact
Questions, suggestions, or feedback? Reach us at [email protected] — we read every message.