Hours Calculator
Easily calculate time durations in hours and minutes.
Why Use This Tool? ✅
Quick & Accurate
Get precise time calculations instantly, handling AM/PM and midnight rollovers correctly.
Flexible Calculations
Find the duration between two times or calculate a new time by adding or subtracting hours.
Perfect for Timesheets
An essential tool for employees and freelancers tracking work shifts and billable hours.
User-Friendly
No more manual counting or complex math—just input the times and get the answer.
Mastering Time: A Guide to Calculating Hours and Minutes ⏰
Calculating time durations can be deceptively complex. Our brains are used to a base-10 number system, but time operates on a base-60 system (60 seconds in a minute, 60 minutes in an hour) and a base-12 or base-24 system for hours in a day. This calculator handles all the tricky conversions for you, providing simple and accurate results.
How to Calculate the Time Between Two Points
This is the most common time calculation, used for everything from tracking a work shift to timing a road trip. The process involves converting both the start and end times into a common unit, like total minutes from the beginning of the day, and then finding the difference.
A key challenge is handling times that cross midnight (e.g., a shift from 10:00 PM to 6:00 AM). Our calculator correctly identifies this and adds 24 hours to the end time before calculating the duration, ensuring you get the right result (8 hours in this case).
Adding and Subtracting Time
This function is perfect for planning and scheduling. If you know an event starts at a certain time and will last for a specific duration, you can easily find the end time. For example: "If I start work at 9:00 AM and work for 8 hours and 30 minutes, what time will I finish?"
This calculation also handles time "rollovers" automatically. For example, adding 45 minutes to 11:30 AM will correctly result in 12:15 PM, not "11:75 AM". This makes it a reliable tool for any scheduling need.
Whether you're managing a professional schedule or planning personal events, this Hours Calculator provides the speed and accuracy you need to stay on track.