Hours Duration Calculator
Calculate exact hours and minutes between any dates or times. Meeting hours, project time, work shifts, and more — 100% private, no uploads.
📅 Start & End Date/Time
🕒 Meeting Start & End Time (same day)
📆 Project Start & End Date
🏖️ Vacation Start & End Date (excludes weekends)
➕ Add / Subtract Hours from a Base Date/Time
⏱️ Convert Total Minutes into Hours & Days
📊 Convert Days, Hours, Minutes to Total Hours
📊 Hours Duration Results
Your privacy is protected. This hours duration calculator works entirely in your browser.
No data is collected or stored. Your dates, times, and results never leave your device.
Run as many calculations as you want — 100% private, free, and unlimited.
How to Use the Hours Duration Calculator
This hours duration calculator makes it simple to find the exact number of hours (and minutes) between two points in time. Choose Hours Between Dates to get the full breakdown from a specific start and end date‑time. Use Meeting Length to calculate how many hours a meeting runs. For multi‑day tasks, Project Calendar Days or Working Days give you a quick count. You can also add or subtract hours from a base time, or convert any number of minutes into a clean hours‑and‑minutes format.
All calculations happen inside your browser — no uploads, no sign‑up, no tracking. Whether you need a work hours calculator for timesheets, an elapsed hours calculator for billing, or just want to see the time difference in hours between two calendar entries, this tool gives you accurate results instantly.
You can also use the hours between two times mode for same‑day events, and the duration breakdown to turn large minute counts into days, hours, and minutes. It's the most flexible free hours calculator available online — and it never shares your data.
Why Choose This Hours Duration Calculator?
🔒 100% Private
No data is ever sent over the internet. This no‑upload hours duration calculator works completely offline in your browser.
⏱️ Multiple Calculation Types
From basic hours between dates to time math and unit conversions — this tool handles every scenario.
📊 Clear, Instant Results
Results are shown in easy‑to‑read cards with the exact number of hours, days, or minutes you need.
🆓 Truly Free
No sign‑ups, no limits, no hidden fees. Use this free hours calculator as often as you like.
Frequently Asked Questions
How do I calculate hours between two times?
Select Hours Between Two Dates & Times, enter the start and end dates/times, and click Calculate. You'll get the total hours, minutes, and even seconds.
Can I calculate working hours excluding weekends?
The Vacation Days mode automatically skips Saturdays and Sundays. For detailed work hour tracking, use that mode and multiply by your daily working hours.
Does this hours calculator work on mobile phones?
Absolutely. The responsive design works perfectly on any modern phone or tablet. You can calculate hours on the go without installing an app.
Learn how to use this tool correctly by reading our step-by-step tutorial.
