Time Calculator: Precise Duration & Addition

Add, subtract, and convert time with down-to-the-second accuracy.

Whether you are totaling your weekly work hours for a timesheet, planning a travel itinerary with multiple layovers, or figuring out exactly how much time is left in a sports game, our Time Calculator makes it easy. Moving between hours, minutes, and seconds can be tricky due to the base-60 system—our tool does the heavy lifting for you.

Mastering Time Conversions

On familyhealthcalc.com, we simplify the math behind the clock:

1. Adding Time Segments

Useful for totaling tasks or segments of a project. If you have three tasks taking 45 minutes each, our calculator instantly shows you 2 hours and 15 minutes instead of just “135 minutes.”

2. Elapsed Time (Duration)

Calculate the difference between two points in time.

• The Overnight Factor: Our calculator understands when an end time (e.g., 2:00 AM) occurs the following day from the start time (e.g., 10:00 PM), providing a seamless 4-hour result.

3. Decimal Time vs. Clock Time

Common in payroll for the US and Canada:

• Clock Time: 8 hours and 30 minutes.
• Decimal Time: 8.5 hours.
• Our tool provides both formats to make filling out timesheets effortless.

Practical Uses for Your Family

• Work & Freelancing: Total your hours for the week to ensure you are paid accurately, especially if you take intermittent breaks.
• Fitness & Training: Add up your “active time” across multiple sets or circuit training sessions.
• Travel Planning: Calculate the total travel time from house to destination, including driving, airport wait times, and flight durations.
• Media Production: Video editors and podcasters can use this to total segment lengths to hit a specific “run time” goal.