Professional time duration calculator - calculate time differences and add minutes with smart parsing
Users
5
+1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#273K
#227K among extensions
Version
1.0.0
updated 1 Nov 2025
Users
monthly, 12 months
Latest, 18 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 12 months
Latest, 18 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Time Span Calculator
Time Span Calculator is a professional time duration calculator that makes time calculations effortless.
🔢 **CALCULATE TIME DIFFERENCES**
- Instantly calculate minutes between any two times
- Smart parsing understands multiple formats: 9a, 930a, 9:30 AM, etc.
- Automatic timezone detection with formatted output
⏰ **ADD MINUTES TO TIME**
- Add any number of minutes to a start time
- See the calculated end time with full date formatting
- Copy results in professional format: "10/31/2025 11:29 AM (CDT)"
🎯 **SMART FEATURES**
- Quick time selection dropdown with common times
- One-click copy to clipboard for both minutes and formatted times
- Persistent storage remembers your last used times
- Keyboard-friendly with arrow key controls
💡 **PERFECT FOR**
- Project time tracking
- Meeting scheduling
- Work hour calculations
- Time management
- Daily planning
No complicated setup, no unnecessary permissions - just a clean, fast time calculator that works when you need it.