Time Calculator is a web-based tool that allows you to calculate the duration of time between any two start and end times. Useful for calculating work time, especially when billing by the hour, Time Calculator is a simple and straightforward solution. Simply enter your start time manually or by selecting it from a clock face, then enter your end time the same way. The duration between the two times is automatically tallied when both values are entered. It also offers the ability to add a break time which is also automatically added to the total duration. With a simple user interface and no ads, it’s a useful and easy-to-use application for when you’re on the clock.