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# Quarter of an Hour

Table of Contents

Welcome to quarter of an hour!

In this article we tell you everything you want to know about the topic, and we also have a calculator as well as a downloadable spreadsheet for you.

In addition, we feature an extensive FAQ section.

## What is a Quarter of an Hour?

A quarter of an hour is an expression for the measurement of time.
A quarter of an hour is represented by the movement of the minute hand of analog clocks by 90 degrees.

15 minutes equal a quarter of an hour.

### Examples of Quarter Hour

• 6:30-6:45 is the quarter hour starting at six thirty and ending at six forty-five.
• I′ll come in a quarter hour = I′ll come in 15 minutes.
• 2:45 pm is a quarter to three o’clock in the afternoon.
As you can see in the above instances, quarter hours are either expressions of time or periods of time.

Quarter hours representing a unit of academic credit are discussed further below.

## Definitions for Quarter Hour

There is more than one definition of quarter hour:
1. A period of 15 minutes
2. Any of the points on the face of a timepiece that mark 15 minutes before or after the hour, and sometimes 30 minutes after
3. A unit of academic credit representing an hour of class (such as lecture class) or three hours of laboratory work each week for an academic quarter
Source 1 & 3: Merriam-Webster Dictionary, Source 2: Collins English Dictionary

## How to Calculate Quarter Hours?

The math depends on the kind of quarter hours you want to calculate, see the preceding paragraph.

In the context of academic credit conversion proceed to the next heading.

If your employers pays you by the quarter hour, you need to round up or down to quarter hours for payroll as explained in the next but one section.

### Semester Hours to Quarter Hours

To change semester hours to quarter hours we multiply the semester credits by 1.5, because two academic semesters equal three academic quarters.

Students of an university employing the semester system typically earn 30 (2 x 15) credits per year, whereas students of an university employing the quarter system typically earn 45 (3 x 15) credits per year.

### Example

8 semester hours = 8 x 1.5 = 12 quarters hours.

Make sure to check out our table in the appendix.

### How to Round Minutes to Quarter Hours?

The minutes are rounded to the nearest 1/4th of a decimal hour as shown in our overview:
MinutesRound to
:00 – :07.00
:08 – :22.25
:23 – :37.50
:38 – :52.75
:53 – :601.00
In the appendix you can locate our comprehensive 24-h chart!

### Example

The quarter hour reporting of the punch time 07h51 is 07h45.

In this example, the actual time someone arrives for beginning work is 07h51, yet the payable time starts 07h45 because the 51th minute is rounded down.

## FAQs

### What are quarter hours time?

A quarter of an hour is a unit of time equal to 15 minutes, most commonly used in the context of telling the time 15 minutes after of before a full hour.

### Is quarter of an hour hyphenated?

In American English, quarter hour is recommended. In British English, we frequently see quarter-hour.

### What time is a quarter of an hour?

The time span of 15′.

### Is a quarter of an hour 45 minutes?

No, 45 minutes are three quarters of an hour.

### How do you write quarter hours?

You write an hour with a quarter fragment as hh:15 or hh:45, depending on whether it is “past” or “to”.

### How much is 1/4 of an hour?

One fourth of an hour is 15 minutes.

### What does 1/4 of an hour mean?

It means 0.25 hours.

### What is the nearest 1/4 hour?

The nearest 1/4 hour is a specific time rounded up or down to the nearest quarter of an hour.

### What is a quarter hour in time?

Any of the quarter points of an hour depicted as a analog watch, or the period of fifteen minutes.

### How do you round to a quarter hour?

Using the regular rounding rules, round up or round down to the nearest quarter.

### How do you use a quarter in time?

You use it to indicate 15 minutes.

### How many quarters are in an hour?

An hour comprises of 4 x 15 minutes or 4 quarters.

### Why is a quarter 15 minutes?

The time is takes the angle of the minute hand of an analog clock to wander 90°, a quarter of the full circle, is 15 minutes.

### How to convert minutes to quarter hours?

Round the minutes to the nearest 0.25 of a decimal hour.

For different questions or feedback fill in the comment form at the bottom of this article to receive an expert answer.

## Quarter Hours Calculator

Our quarter hours app is straightforward:

Reset
In the additional information section further down on this page you can download our free spreadsheet which has the same functionality as our converter.

## Quarter Hour Increments

To ensure consistency in time reporting, work hours should be recorded exactly, or in quarter hour (.25) increments rounded to the nearest 1/4 hour.

Quarter hour increments means that if mod(minutes, 15) equals eight or more the minutes are rounded up to nearest quarter hour, whereas seven minutes or less are rounded down to the nearest quarter hour.

## How do I Calculate Quarter Hours in Excel?

Use our sheet which you can download here.

We are now going to explain how quarter hour rounding works in Excel:

All cells are formatted as [h]:mm;@

A1 holds the start time, B1 holds the end time, C1 (=B1 – A1) holds the elapsed time and D1 holds the time rounded to quarters hours as D1 =MROUND(B1-A1,1/(4*24)).

## Additional Information

As a side-note: According to Why does a quarter “of” mean the same thing as a quarter “to”? plenty of people complained about the inaccuracy of public clocks in late Renaissance London.

## Summary

Quarters of an hour are 15-min periods.
Quarter hour rounding means start and stop times are rounded to the nearest 1/4th of an hour, provided the time in/out does not exactly fall on the quarter hour.

Quarter credit hours can be computed from semester credit hours by multiplying the former by 1.5.

With the exception of quarters hours, a digital clock is easier to read than a analog clock.

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## Quarter Hour Increments Chart

TimeRounded Quarter Time (Decimal Hours)
06:00 – 06:0706:00
06:08 – 06:2206:25
06:23 – 06:3706:50
06:38 – 06:5206:75
06:53 – 06:5907:00
07:00 – 07:0707:00
07:08 – 07:2207:25
07:23 – 07:3707:50
07:38 – 07:5207:75
07:53 – 07:5908:00
08:00 – 08:0708:00
08:08 – 08:2208:25
08:23 – 08:3708:50
08:38 – 08:5208:75
08:53 – 08:5909:00
09:00 – 09:0709:00
09:08 – 09:2209:25
09:23 – 09:3709:50
09:38 – 09:5209:75
09:53 – 09:5910:00
10:00 – 10:0710:00
10:08 – 10:2210:25
10:23 – 10:3710:50
10:38 – 10:5210:75
10:53 – 10:5911:00
11:00 – 11:0711:00
11:08 – 11:2211:25
11:23 – 11:3711:50
11:38 – 11:5211:75
11:53 – 11:5912:00
12:00 – 12:0712:00
12:08 – 12:2212:25
12:23 – 12:3712:50
12:38 – 12:5212:75
12:53 – 12:5913:00
13:00 – 13:0713:00
13:08 – 13:2213:25
13:23 – 13:3713:50
13:38 – 13:5213:75
13:53 – 13:5914:00
14:00 – 14:0714:00
14:08 – 14:2214:25
14:23 – 14:3714:50
14:38 – 14:5214:75
14:53 – 14:5915:00
15:00 – 15:0715:00
15:08 – 15:2215:25
15:23 – 15:3715:50
15:38 – 15:5215:75
15:53 – 15:5916:00
16:00 – 16:0716:00
16:08 – 16:2216:25
16:23 – 16:3716:50
16:38 – 16:5216:75
16:53 – 16:5917:00
17:00 – 17:0717:00
17:08 – 17:2217:25
17:23 – 17:3717:50
17:38 – 17:5217:75
17:53 – 17:5918:00
18:00 – 18:0718:00
18:08 – 18:2218:25
18:23 – 18:3718:50
18:38 – 18:5218:75
18:53 – 18:5919:00
19:00 – 19:0719:00
19:08 – 19:2219:25
19:23 – 19:3719:50
19:38 – 19:5219:75
19:53 – 19:5920:00
20:00 – 20:0720:00
20:08 – 20:2220:25
20:23 – 20:3720:50
20:38 – 20:5220:75
20:53 – 20:5921:00
21:00 – 21:0721:00
21:08 – 21:2221:25
21:23 – 21:3721:50
21:38 – 21:5221:75
21:53 – 21:5922:00
22:00 – 22:0722:00
22:08 – 22:2222:25
22:23 – 22:3722:50
22:38 – 22:5222:75
22:53 – 22:5923:00
23:00 – 23:0723:00
23:08 – 23:2223:25
23:23 – 23:3723:50
23:38 – 23:5223:75
23:53 – 23:5900:00
00:00 – 00:0700:00
00:08 – 00:2200:25
00:23 – 00:3700:50
00:38 – 00:5200:75
00:53 – 00:5901:00
01:00 – 01:0701:00
01:08 – 01:2201:25
01:23 – 01:3701:50
01:38 – 01:5201:75
01:53 – 01:5902:00
02:00 – 02:0702:00
02:08 – 02:2202:25
02:23 – 02:3702:50
02:38 – 02:5202:75
02:53 – 02:5903:00
03:00 – 03:0703:00
03:08 – 03:2203:25
03:23 – 03:3703:50
03:38 – 03:5203:75
03:53 – 03:5904:00
04:00 – 04:0704:00
04:08 – 04:2204:25
04:23 – 04:3704:50
04:38 – 04:5204:75
04:53 – 04:5905:00
05:53 – 05:5905:00
05:53 – 05:5905:25
05:53 – 05:5905:50
05:53 – 05:5905:75
05:53 – 05:5906:00

## Quarter Hour to Semester Hour Conversion Chart

Semester HoursQuarter Hours
1/30.5
2/31
11.5
1 1/32
1 2/32.5
23
2 1/33.5
2 2/34
34.5
3 1/35
3 2/35.5
46
4 1/36.5
4 2/37
57.5
6 1/39.5
6 2/310
710.5
7 1/311
7 2/311.5
812
8 1/312.5
8 2/313
913.5
9 1/314
9 2/314.5
1015
1116.5
1218
1319.5
1421
1522.5
1624
1725.5
1827
1928.5
2030
2131.5
2233
2334.5
2436
2537.5
2639
2740.5
2842
2943.5
3045
3146.5
3248
3349.5
3451
3552.5
3654
3755.5
3857
3958.5
4060
4161.5
4263
4364.5
4466
4567.5
4669
4770.5
4872
4973.5
5075
5176.5
5278
5379.5
5481
5582.5
5684
5785.5
5887
5988.5
6090
6191.5
6293
6394.5
6496
6597.5
6699
67100.5
68102
69103.5
70105
71106.5
72108
73109.5
74111
75112.5
76114
77115.5
78117
79118.5
80120
81121.5
82123
83124.5
84126
85127.5
86129
87130.5
88132
89133.5
90135
91136.5
92138
93139.5
94141
95142.5
96144
97145.5
98147
99148.5
100150
– Article written by Mark, last updated on March 4th, 2024