Time Calculator
Created by
PebblesTime Arithmetic
Time Value 1
Time Value 2
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A time calculator is an efficient tool for basic math operations involving time units such as days, hours, minutes, and seconds. This tool helps you add two-time values, find the difference between two-time values, multiply the time value by a number, and divide the time by a specific number.
What is time & formats
Time is measured using units like hours, minutes, and seconds, with longer durations represented by days, weeks, months, and years. The measurement of time is based on the rotation of the earth (a day), the revolution of the earth around the sun (a year) and other astronomical cycles.
In modern society, time plays a crucial role in daily activities, scheduling, and organizing. Time unit hour is often represented using the 24-hour clock format and 12-hour clock format.
In modern society, time plays a crucial role in daily activities, scheduling, and organizing. Time unit hour is often represented using the 24-hour clock format and 12-hour clock format.
How this calculator works
How to add time
Add days, hours, minutes, and seconds working from smallest unit of time to largest. Add seconds from both time values. If the total is above 60 seconds, subtract 60 from the total value and carry 1 minute to the minute column.
Add days, hours, minutes, and seconds working from smallest unit of time to largest. Add seconds from both time values. If the total is above 60 seconds, subtract 60 from the total value and carry 1 minute to the minute column.
Add minutes; if the total is more than 60 minutes, subtract 60 minutes from the total value and carry it as a 1 hour to the hour column. Add the hours from both values (including carries over-hours). If the total value exceeds 24 hours, subtract 24 and carry 1 day to the day’s column. Add the days (including carried-over days).
For example: 3 hours 45 minutes 30 seconds + 2 hours 20 minutes 45 seconds = 75 seconds (→ 1 minutes 15 seconds), 66m (→ 1 hour 6 minutes), total = 6 hours 6 minutes 15 seconds.
How to subtract time
If the first or top second value is smaller than the second, borrow 1 minute (60 seconds) from the minute column. If the first-minute value is smaller than the second value, borrow 60 minutes (1 hour) from the hour’s column. If the hours you subtract are larger than the top hour value, borrow 24 hours (1 day) from the day column. Subtract the values.
For example: 1 hour 50 minutes 30 seconds – 4 hours 20 minutes 15 seconds = borrow 1 minute (→ 45 seconds), borrow 1 hour (→ 29 minutes), total = 2 hours 29 minutes 45 seconds.
How to multiply time
Convert all the time values (days, hours, minutes) into seconds. Multiply the total seconds by the given number. Convert the seconds back to minutes, hours, and days to ensure proper format. Show the final result in days, hours, minutes, and seconds.
For example: 1 hour 15 minutes 30 seconds × 3 = 4,530 seconds × 3 = 13,590 seconds = 3 hours 59 minutes 50 seconds.
How to divide time
Convert all time values (days, hours, and minutes) into seconds. Divide the total seconds by the given number. Convert the seconds back to days, hours, and minutes. Show the divided results in days, hours, minutes, and seconds.
For example: 5 hours 30 minutes ÷ 2 = 19,800 seconds ÷ 2 = 9,900 seconds = 2 hours 45 minutes.
How to use this time calculator
Step 1: Enter the number of days (1-31), hours (0 – 23), minutes (0 – 59), and seconds (0 – 59). Ensure each field is filled with correct values to avoid calculation errors.
Step 2: Choose an operation based on your requirement for addition and subtraction; you must provide 2-time units in all fields. Provide one set of time values and a multiplier/divider in the appropriate field for multiplication and division. To avoid confusion during value entry, always choose operation first.
Step 3: After entering the value and selecting the operation, click calculate to get the results. The calculator will display the results instantly in a standard time format, usually breaking down into days, hours, minutes, and seconds.
Step 4: For manual time calculation, it is essential to convert all time units into the smallest time units (seconds) to carry out the calculation, and once the calculation is completed, then convert back to the desired format.