Convert 100 minute clock to 60 minute clock

By Mark Kennan

Updated July 21, 2017

i James And James/Pixland/Getty Images

When most people think of the metric system, they think of measuring weight and distance. However, the metric system also has a little-used time system utilizing a 10-hour day and each hour having 100 minutes. These metric hours and metric minutes have different lengths than the standard hours and minutes used by most people today. However, if you know the conversion factors, you can quickly convert from a 100 minute clock to standard time.

Multiply the number of hours on the 100 minute clock by 2.4 to convert to standard hours. For example, if the time on the 100 minute clock is 3:27:10, you would multiply 3 by 2.4 to get 7.2 hours.

Multiply the decimal remainder for the number of hours by 60 to convert from standard hours to minutes. In this example, you would multiply 0.2 by 60 to get 12.

Multiply the number of minutes on the 100 minute time clock by 1.44 to convert to standard minutes. In this example, you would multiply 27 by 1.44 to get 38.88.

Multiply the decimal remainder for the number of minutes by 60 to convert from standard minutes to seconds. In this example, you would multiply 0.88 by 60 to get 52.8 seconds.

Multiply the number of seconds on the 100 minute clock by 0.864 to convert to standard seconds. In this example, you would multiply 0.864 by 10 to get 8.64 seconds.

Add the hours, minutes and seconds together to find the time converted from the 100 minute clock to standard time. Completing the example, you would add 7 hours, 12 minutes, 38 minutes, 52.8 seconds and 8.64 seconds to find that 3:27:10 converts to 7:51:01.44 in standard time.

Unit Converter

Enter the total number of minutes into the calculator to convert into a 100-minute decimal clock.

• Fraction of An Hour Calculator
• Tenth of an Hour Calculator
• DMS Calculator (Degrees, Minutes, Seconds)

100 Minute Clock Formula

The following formula is used to convert minutes into decimals in hundredths.

D = M / 60

• Where D is the decimal value in hundredths
• M is the number of minutes

In the case of this formula, if the number of minutes is say 1 hour and 20 minutes, used 20 minutes in the formula, and then add the decimal to the 1 hour.

For example, in that case, 20/60 = .333 so then add 1 + .333 = 1.333.

What is a 100 minute clock?

A 100-minute clock is typically referred to when talking about the decimal equivalent of the minutes of an hour. In other words, 1 is 60 minutes in a 100-minute clock.

Example Problem

how to calculate a 100 minute clock?

First, determine the total number of hours and minutes.

For this example, the time that has passed is 4 hours and 26 minutes.

Next, split the hours and minutes apart.

Next, divide the minutes by 60 to get a decimal value.

26 / 60 = .4333

Finally, add the 4 hours to the decimal to reach the final answer:

= 4 + .4333 = 4.433

My time clock measures my work hours by the 100 minute. So if I worked 7 hours and 30 minutes, it would read 7.30.

My paycheck takes that time and converts it to the 60 minute hour. So if I worked 7 hours and 30 minutes, it would read 7.50.

I record all my hours in Excel and can't seem to find a formula that will convert my time from 7.30 to 7.50 so I can see if my paycheck and my recorded hours match up. Any ideas?

Edit: There are a few formulas that seemed to have worked, though this is the one I'm sticking with

=LEFT(A1,SEARCH(".",A1)-1)+(RIGHT(A1,LEN(A1)-SEARCH(".",A1)+1)/.6)

This one works too

=INT(A1)+(A1-INT(A1))/0.6

Thank you! You all are magic.

Metric time is an alternative timekeeping system that uses 100 seconds per minute, 100 minutes per hour and 10 hours per day instead of the traditional 60 seconds per minute, 60 minutes per hour and 24 hours per day. You can convert metric time to the standard time equivalent with a little arithmetic, then carefully adjust minutes and seconds so they don’t go over 59.

Multiply the time by 2.4 to convert from metric hours to normal hours. For example, 7 metric hours would be equivalent to 16.8 regular hours. If the answer has a decimal, take just the decimal part and multiply it by 60 to get the number of regular minutes. For example, 16.8 minutes equals 16 hours and 48 minutes.

Divide metric minutes by 1.44 to get regular minutes. For example, 36 metric minutes converts to 25 regular minutes.

Add the minutes calculated in Step 1 to the minutes calculated from Step 2. If the result is greater than 59, subtract 60 from minutes and add one to the hours. For example, since 48 plus 25 is 73, hours increase by one to 17 and 73 minus 60 gives you 13 minutes.

Subtract 12 from the number of hours if it is greater than 12, then add "p.m." after the time. For example, 17:13 becomes 5:13 p.m. If the hour is zero, use 12 instead and write "a.m." after the time. For example, 0:14 becomes 12:14 a.m.

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