What is a 100 minute clock?

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.

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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.

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.

How long is 100 minutes? What is 100 minutes in hours? 100 min to hr conversion (mtoh).

100 Minutes =

1.6666667 Hours

(rounded to 8 digits)

Display result as

A minute is a unit of time equal to 60 seconds.

An hour is a unit of time equal to 60 minutes, or 3,600 seconds.

Minutes to Hours Conversions

(some results rounded)

min	hr
100.00	1.6667
100.01	1.6668
100.02	1.667
100.03	1.6672
100.04	1.6673
100.05	1.6675
100.06	1.6677
100.07	1.6678
100.08	1.668
100.09	1.6682
100.10	1.6683
100.11	1.6685
100.12	1.6687
100.13	1.6688
100.14	1.669
100.15	1.6692
100.16	1.6693
100.17	1.6695
100.18	1.6697
100.19	1.6698
100.20	1.67
100.21	1.6702
100.22	1.6703
100.23	1.6705
100.24	1.6707

min	hr
100.25	1.6708
100.26	1.671
100.27	1.6712
100.28	1.6713
100.29	1.6715
100.30	1.6717
100.31	1.6718
100.32	1.672
100.33	1.6722
100.34	1.6723
100.35	1.6725
100.36	1.6727
100.37	1.6728
100.38	1.673
100.39	1.6732
100.40	1.6733
100.41	1.6735
100.42	1.6737
100.43	1.6738
100.44	1.674
100.45	1.6742
100.46	1.6743
100.47	1.6745
100.48	1.6747
100.49	1.6748

min	hr
100.50	1.675
100.51	1.6752
100.52	1.6753
100.53	1.6755
100.54	1.6757
100.55	1.6758
100.56	1.676
100.57	1.6762
100.58	1.6763
100.59	1.6765
100.60	1.6767
100.61	1.6768
100.62	1.677
100.63	1.6772
100.64	1.6773
100.65	1.6775
100.66	1.6777
100.67	1.6778
100.68	1.678
100.69	1.6782
100.70	1.6783
100.71	1.6785
100.72	1.6787
100.73	1.6788
100.74	1.679

min	hr
100.75	1.6792
100.76	1.6793
100.77	1.6795
100.78	1.6797
100.79	1.6798
100.80	1.68
100.81	1.6802
100.82	1.6803
100.83	1.6805
100.84	1.6807
100.85	1.6808
100.86	1.681
100.87	1.6812
100.88	1.6813
100.89	1.6815
100.90	1.6817
100.91	1.6818
100.92	1.682
100.93	1.6822
100.94	1.6823
100.95	1.6825
100.96	1.6827
100.97	1.6828
100.98	1.683
100.99	1.6832