Your Ultimate Time & Date Calculator
Tired of counting days on calendars? Need to know how many weeks until your project deadline? TimeZenith transforms confusing time math into simple, accurate answers.
Imagine knowing exactly when your 90-day trial ends or precisely how long until vacation starts – in 3 clicks. Our users save 8+ hours monthly on:
Project timelines & deadlines
Bill due dates & financial planning
Event countdowns & vacation prep
Scenario: "What's the date 6 weeks and 3 days from today?"
Select the Date Calculator tab at the top of the calculator section.
Add your time values in the appropriate fields. You can combine years, months, weeks, and days.
Click the "Add Time" button to calculate a future date or "Subtract Time" for past dates.
Calculate "1 year + 3 months + 15 days" in one go – perfect for loan terms or lease agreements.
Bookmark our mobile-friendly time tool to calculate deadlines during commutes.
Found your perfect timeline? Copy the unique URL to:
✅ Slack teams ✅ Google Calendar ✅ Client emails
Q: Can I calculate how many weeks between two dates?
A: Absolutely! Use our reverse calculator in Advanced Mode.
Q: Is military time supported?
A: Yes – toggle between 12h/24h formats.
Q: How accurate are leap year calculations?
A: We account for all date quirks – tested against NASA's time APIs.
No signups/ads
Works in 14 languages
Updated for 2038+ dates