ChronoCalc is designed to streamline all your time calculation needs.
- If I start work at 8:40, and end at 4:25, how much time has passed?
- What time will it be in 5 and a half hours? What time was it 5 and a half hours ago?
- If I watch 8 episodes lasting 43 minutes each, how much total time is that?
- How many hours are 143 minutes?

Features:
- Addition, Subtraction, Multiplication, and Division
- Subtract From operator lets you enter start times before end times - perfect for long lists of calculations
- Millisecond precision
- AM, PM, and Military/24h time
- Intervals can be entered as H:M:S:MS or as decimals
- Activity Timer makes it easy to get the elapsed time between the start and end of an activity
- Easily convert between hours, minutes, seconds, and milliseconds
- 6 different color schemes to choose from