Add up a timesheet in seconds with our free calculator.Open the calculator
TimeTracker
Start free
Calculator

Time Duration Calculator

A free time duration calculator that works out how much time passed between two times. Enter a start and end time to get the duration in hours and minutes, as decimal hours, and in total minutes. It handles times that cross midnight.

0h 0m

Time between the two times

Full chart

Durations in minutes, hours and decimal

Once you have a duration in minutes, this gives it back in every form you might need it in, including the decimal hours payroll takes.

1 to 120 minutes1 to 120 minutes written as hours and minutes, clock time, and decimal hours.
1 to 120 minutes written as hours and minutes, clock time, and decimal hours.
MinutesIn wordsClockDecimal
1 min1 minute0:010.02
2 min2 minutes0:020.03
3 min3 minutes0:030.05
4 min4 minutes0:040.07
5 min5 minutes0:050.08
6 min6 minutes0:060.10
7 min7 minutes0:070.12
8 min8 minutes0:080.13
9 min9 minutes0:090.15
10 min10 minutes0:100.17
11 min11 minutes0:110.18
12 min12 minutes0:120.20
13 min13 minutes0:130.22
14 min14 minutes0:140.23
15 min15 minutes0:150.25
16 min16 minutes0:160.27
17 min17 minutes0:170.28
18 min18 minutes0:180.30
19 min19 minutes0:190.32
20 min20 minutes0:200.33
21 min21 minutes0:210.35
22 min22 minutes0:220.37
23 min23 minutes0:230.38
24 min24 minutes0:240.40
25 min25 minutes0:250.42
26 min26 minutes0:260.43
27 min27 minutes0:270.45
28 min28 minutes0:280.47
29 min29 minutes0:290.48
30 min30 minutes0:300.50
31 min31 minutes0:310.52
32 min32 minutes0:320.53
33 min33 minutes0:330.55
34 min34 minutes0:340.57
35 min35 minutes0:350.58
36 min36 minutes0:360.60
37 min37 minutes0:370.62
38 min38 minutes0:380.63
39 min39 minutes0:390.65
40 min40 minutes0:400.67
41 min41 minutes0:410.68
42 min42 minutes0:420.70
43 min43 minutes0:430.72
44 min44 minutes0:440.73
45 min45 minutes0:450.75
46 min46 minutes0:460.77
47 min47 minutes0:470.78
48 min48 minutes0:480.80
49 min49 minutes0:490.82
50 min50 minutes0:500.83
51 min51 minutes0:510.85
52 min52 minutes0:520.87
53 min53 minutes0:530.88
54 min54 minutes0:540.90
55 min55 minutes0:550.92
56 min56 minutes0:560.93
57 min57 minutes0:570.95
58 min58 minutes0:580.97
59 min59 minutes0:590.98
60 min1 hour1:001.00
61 min1 hour 1 minute1:011.02
62 min1 hour 2 minutes1:021.03
63 min1 hour 3 minutes1:031.05
64 min1 hour 4 minutes1:041.07
65 min1 hour 5 minutes1:051.08
66 min1 hour 6 minutes1:061.10
67 min1 hour 7 minutes1:071.12
68 min1 hour 8 minutes1:081.13
69 min1 hour 9 minutes1:091.15
70 min1 hour 10 minutes1:101.17
71 min1 hour 11 minutes1:111.18
72 min1 hour 12 minutes1:121.20
73 min1 hour 13 minutes1:131.22
74 min1 hour 14 minutes1:141.23
75 min1 hour 15 minutes1:151.25
76 min1 hour 16 minutes1:161.27
77 min1 hour 17 minutes1:171.28
78 min1 hour 18 minutes1:181.30
79 min1 hour 19 minutes1:191.32
80 min1 hour 20 minutes1:201.33
81 min1 hour 21 minutes1:211.35
82 min1 hour 22 minutes1:221.37
83 min1 hour 23 minutes1:231.38
84 min1 hour 24 minutes1:241.40
85 min1 hour 25 minutes1:251.42
86 min1 hour 26 minutes1:261.43
87 min1 hour 27 minutes1:271.45
88 min1 hour 28 minutes1:281.47
89 min1 hour 29 minutes1:291.48
90 min1 hour 30 minutes1:301.50
91 min1 hour 31 minutes1:311.52
92 min1 hour 32 minutes1:321.53
93 min1 hour 33 minutes1:331.55
94 min1 hour 34 minutes1:341.57
95 min1 hour 35 minutes1:351.58
96 min1 hour 36 minutes1:361.60
97 min1 hour 37 minutes1:371.62
98 min1 hour 38 minutes1:381.63
99 min1 hour 39 minutes1:391.65
100 min1 hour 40 minutes1:401.67
101 min1 hour 41 minutes1:411.68
102 min1 hour 42 minutes1:421.70
103 min1 hour 43 minutes1:431.72
104 min1 hour 44 minutes1:441.73
105 min1 hour 45 minutes1:451.75
106 min1 hour 46 minutes1:461.77
107 min1 hour 47 minutes1:471.78
108 min1 hour 48 minutes1:481.80
109 min1 hour 49 minutes1:491.82
110 min1 hour 50 minutes1:501.83
111 min1 hour 51 minutes1:511.85
112 min1 hour 52 minutes1:521.87
113 min1 hour 53 minutes1:531.88
114 min1 hour 54 minutes1:541.90
115 min1 hour 55 minutes1:551.92
116 min1 hour 56 minutes1:561.93
117 min1 hour 57 minutes1:571.95
118 min1 hour 58 minutes1:581.97
119 min1 hour 59 minutes1:591.98
120 min2 hours2:002.00
121 to 300 minutes121 to 300 minutes written as hours and minutes, clock time, and decimal hours.
121 to 300 minutes written as hours and minutes, clock time, and decimal hours.
MinutesIn wordsClockDecimal
125 min2 hours 5 minutes2:052.08
130 min2 hours 10 minutes2:102.17
135 min2 hours 15 minutes2:152.25
140 min2 hours 20 minutes2:202.33
145 min2 hours 25 minutes2:252.42
150 min2 hours 30 minutes2:302.50
155 min2 hours 35 minutes2:352.58
160 min2 hours 40 minutes2:402.67
165 min2 hours 45 minutes2:452.75
170 min2 hours 50 minutes2:502.83
175 min2 hours 55 minutes2:552.92
180 min3 hours3:003.00
185 min3 hours 5 minutes3:053.08
190 min3 hours 10 minutes3:103.17
195 min3 hours 15 minutes3:153.25
200 min3 hours 20 minutes3:203.33
205 min3 hours 25 minutes3:253.42
210 min3 hours 30 minutes3:303.50
215 min3 hours 35 minutes3:353.58
220 min3 hours 40 minutes3:403.67
225 min3 hours 45 minutes3:453.75
230 min3 hours 50 minutes3:503.83
235 min3 hours 55 minutes3:553.92
240 min4 hours4:004.00
245 min4 hours 5 minutes4:054.08
250 min4 hours 10 minutes4:104.17
255 min4 hours 15 minutes4:154.25
260 min4 hours 20 minutes4:204.33
265 min4 hours 25 minutes4:254.42
270 min4 hours 30 minutes4:304.50
275 min4 hours 35 minutes4:354.58
280 min4 hours 40 minutes4:404.67
285 min4 hours 45 minutes4:454.75
290 min4 hours 50 minutes4:504.83
295 min4 hours 55 minutes4:554.92
300 min5 hours5:005.00
301 to 720 minutes301 to 720 minutes written as hours and minutes, clock time, and decimal hours.
301 to 720 minutes written as hours and minutes, clock time, and decimal hours.
MinutesIn wordsClockDecimal
330 min5 hours 30 minutes5:305.50
360 min6 hours6:006.00
390 min6 hours 30 minutes6:306.50
420 min7 hours7:007.00
450 min7 hours 30 minutes7:307.50
480 min8 hours8:008.00
500 min8 hours 20 minutes8:208.33
510 min8 hours 30 minutes8:308.50
540 min9 hours9:009.00
570 min9 hours 30 minutes9:309.50
600 min10 hours10:0010.00
630 min10 hours 30 minutes10:3010.50
660 min11 hours11:0011.00
690 min11 hours 30 minutes11:3011.50
720 min12 hours12:0012.00
721 minutes and up721 minutes and up written as hours and minutes, clock time, and decimal hours.
721 minutes and up written as hours and minutes, clock time, and decimal hours.
MinutesIn wordsClockDecimal
750 min12 hours 30 minutes12:3012.50
780 min13 hours13:0013.00
810 min13 hours 30 minutes13:3013.50
840 min14 hours14:0014.00
870 min14 hours 30 minutes14:3014.50
900 min15 hours15:0015.00
930 min15 hours 30 minutes15:3015.50
960 min16 hours16:0016.00
990 min16 hours 30 minutes16:3016.50
1000 min16 hours 40 minutes16:4016.67
1020 min17 hours17:0017.00
1050 min17 hours 30 minutes17:3017.50
1080 min18 hours18:0018.00
1110 min18 hours 30 minutes18:3018.50
1140 min19 hours19:0019.00
1170 min19 hours 30 minutes19:3019.50
1200 min20 hours20:0020.00
1230 min20 hours 30 minutes20:3020.50
1260 min21 hours21:0021.00
1290 min21 hours 30 minutes21:3021.50
1320 min22 hours22:0022.00
1350 min22 hours 30 minutes22:3022.50
1380 min23 hours23:0023.00
1410 min23 hours 30 minutes23:3023.50
1440 min24 hours24:0024.00
1500 min25 hours25:0025.00
2000 min33 hours 20 minutes33:2033.33
2880 min48 hours48:0048.00
4320 min72 hours72:0072.00

How long between two times

A duration is just the gap between a start and an end. The reason it needs a calculator is that clock time is base 60, so you cannot subtract 09:45 from 17:20 the way you would subtract two ordinary numbers.

Do it in two steps if you are working by hand. Get the whole hours first, then the minutes, borrowing 60 from the hours if the end minutes are smaller. From 09:45 to 17:20 is 7 hours and 35 minutes, because you borrow an hour to turn 20 into 80.

Hours and minutes, or decimal hours

The same duration has two correct written forms and they are not interchangeable. 7 hours 35 minutes is 7:35 on a clock and 7.58 as a decimal. Typing 7.35 into a payroll field means 7 hours 21 minutes, which is 14 minutes of pay gone.

Use hours and minutes when a human reads it. Use decimal when a system does. The table covers the durations that come up most often.

Common durations in hours and minutes and as decimal hours
DurationHours and minutesDecimal hours
Half an hour0:300.50
Three quarters0:450.75
An hour and a half1:301.50
Two and a quarter2:152.25
Four hours ten4:104.17
Seven thirty-five7:357.58
A standard workday8:008.00

Crossing midnight, and adding durations up

If the end time is earlier in the day than the start, the span crossed midnight. Add 24 hours to the end before subtracting, so 22:15 to 06:40 becomes 30:40 minus 22:15, which is 8 hours 25 minutes.

Adding several durations together is where errors creep in, because 45 plus 45 minutes is 1:30, not 0:90. Convert everything to minutes, add, then divide by 60 at the end. It is one more step and it removes the whole class of mistake.

For a work shift with unpaid breaks and overtime rather than a plain span, use the work hours calculator. For the conversion on its own, the minutes to hours converter and the hours to decimal converter each do one job.

Related Free Tools

Answers

Frequently asked questions

Common queries and answers about the time duration calculator.

How do I calculate the time between two times?
Enter the start time and the end time. The calculator shows the elapsed duration instantly in three formats.
What if the end time is the next day?
If the end time is earlier than the start time, the calculator assumes it is on the following day and counts across midnight.
Does it give decimal hours?
Yes. Alongside hours and minutes it shows decimal hours, which payroll and billing systems usually require.

Tired of doing this by hand?

TimeTracker captures every hour automatically and turns it into timesheets, invoices, and live profitability.

Start tracking free