### Time Calculator

Calculate the addition or subtraction of two time values using this calculator. The default value for any empty input field will be zero.

Users may use the time calculator to add two time values or calculate the difference between two time values. For both time-values, the value fields ‘Day,’ ‘Hour,’ ‘Minute,’ and ‘Second’ have been supplied. If a value field is left empty, the result will be shown as such.

### Time can be added or subtracted from a date

Here is a calculator that can be used to add or subtract time (d, h, m, and s) from a date and time. A new time and date will be output according to the amount of time that has been removed or added. Calculate the time between two dates (d, h, m, and s) using the Time Duration Calculator.

This time calculator allows users to either add or subtract time values from a ‘Start Time,’ which is represented by a certain date and a specific time on that day. The ‘Start Time’ field has a date, which may be input directly into the relevant value fields or via the calendar, as well as a time value, which includes the value fields ‘Hour, Minute, Second, and a drop-down option to change between AM and PM. The value elements ‘Day’, ‘Hour’, ‘Minute’, and ‘Second’ make up the time-value to be deducted from the ‘Start Time’.

### Time Calculator Equation

The calculator allows you to add or subtract time values that are expressed as expressions. The letters d, h, m, and s appear after each accepted input value. d is the length of a day, h is the length of an hour, m is the length of a minute, and s is the length of a second.

### See also other

How many Seconds in Hour / Seconds in a Day / Seconds in a Year

How many Weeks in a Month / Weeks in a Year / Months in the Year

How many days in a year / Hours in a Week / Hours in a year

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