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Our free Online Timer Stopwatch version 3.0 timers can time from any 'start time' to any 'stop time', counting up or down, with or without an alarm, in a loop or not, and in different display colors, sizes and fonts. They work with Internet Explorer, FireFox, Chrome, Safari and more. These timers have our highest level of accuracy (Level 3). They check their accuracy every second and automatically adjust when your computer is overloaded. Learn more about their accuracy. To use these timers you need JavaScript and Cookies enabled in your browser. Most browsers have these enabled. Start Time / Stop Time Area
The 'start' and 'stop' time values can range from -99:59:59 to +99:59:59. Time values are entered in two ways: [+|-]n[h|m|s] or [+|-][[h:]m:]s. Here are examples . . .
A new 'start time' or 'stop time' has no effect on the timer until you click the Set or Reset button, or until a running timer loops back to start again. The Set button will update the timer's 'start' and 'stop' times and reset the timer. It performs the same function as the Reset button. Time values can also be entered using a period instead of a colon, as in 2.30.0 for 02:30:00. This makes it possible to enter 'start' and 'stop' times using one hand and the numeric keypad on your keyboard. When the timer is running and minimized, it will automatically become the top window when the 'stop time' is reached.
Automatic Counting Direction Count up by making the 'stop time' greater than the 'start time', for example from 0 to 1:00. Count down by making the 'stop time' less than the 'start time', for example from 1:00 to 0. The 'start' and 'stop' times can range from -99:59:59 to 99:59:59. Negative Time You can count from a positive time value to a negative time value, or vice versa. For example, from 30:00 down to -5:00. This is handy for meetings or lectures, where you want the speaker to see how much time they have used up over their allotted time. You can also time from a negative time value to a positive one, for example from -1:00 up to 30:00. This is useful when you want to give yourself time to set up an exam, contest or experiment. Timer Stopwatch Buttons There are only two timer controls: a Start / Stop button, and a Reset button . . .
Settings Each timer's settings can be viewed and changed by clicking the 'Show Settings' link to the right of the 'start' and 'stop' times. All setting changes take effect immediately, and you can change the settings while a timer is running. Setting changes are automatically saved using cookies, so there is no 'save' button. You need JavaScript and Cookies enabled in your browser to use the timer and change the settings. Most browsers have these enabled. The settings area looks like this
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