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Digital Stopwatch Timer Calculator
About this Calculator
This time calculator for minutes, seconds and tenths of seconds will add and subtract time in the form mm:ss.s or minutes:seconds.tenths and keep a running total like an adding machine. Totals will accumulate in hours when necessary. Enter values according to allowed time entry formats below. You should be able to use this keypad-only without a mouse. To cause subtraction you can enter a negative sign before the value such as -5:22.1.
Time Entry Formats
You can use a dash (-), period (.), colon (:) or blank space ( ) as the minute/second separator. For example, 5-06.2, 5.06.2, 5:06.2, and 5 06.2 are all interpreted as 5 minutes 6 seconds and 2 tenths or 5:06.2.
Seconds are the default: Entries of an integer-only or integer plus a decimal fraction will be interpreted as seconds and tenths of seconds.
A leading dash or negative sign will cause it to be a negative value.
Entry limits allowed:
- minutes 0 to 59
- seconds 0 to 59
- tenths of seconds 0 to 9
| Entry | Interpretation | Example | Meaning | Resulting Entry |
|---|---|---|---|---|
| X.. | X minutes : 0 seconds . 0 tenths | 5.. | 5 minutes | 05:00.0 |
| X.Y. | X minutes : Y seconds . 0 tenths | 5.22.0 | 5 minutes : 22 seconds | 05:22.0 |
| X.Y.Z | X minutes : Y seconds . Z tenths | 5.22.1 5.01.1 |
5 minutes : 22 seconds . 1 tenth 5 minutes : 1 second . 1 tenth |
05:22.1 05:01.1 |
| X..Z | X minutes : 0 seconds . Z tenths | 5..5 | 5 minutes : 0 seconds . 5 tenths | 05:00.5 |
| Default integer and decimal parts are registered as seconds | ||||
| Y.Z | Y seconds . Z tenths | 22.1 01.1 |
22 seconds . 1 tenth 1 second . 1 tenth |
00:22.1 00:01.1 |
| Y | Y seconds | 22 01 |
22 seconds 1 second |
00:22.0 00:01.0 |
| .Z | . Z tenths | .5 | 5 tenths | 00:00.5 |
You can use numbers and the enter button on your keyboard without using your mouse except to change the operation to subtraction. You can also enter negative numbers (-4.5.8) from your keypad then you do not need to change to subtraction.