Billing increment chart: 6, 10 and 15 minutes

Choose a billing increment, find your minutes worked, and read the billed hours. Compare rounding up with rounding to the nearest increment.

6-minute increment chart (tenths of an hour)

Round up
MinutesBill
1–60.1
7–120.2
13–180.3
19–240.4
25–300.5
31–360.6
37–420.7
43–480.8
49–540.9
55–601.0
Round to nearest
MinutesBill
1–80.1
9–140.2
15–200.3
21–260.4
27–320.5
33–380.6
39–440.7
45–500.8
51–560.9
57–601.0

Both charts bill at least 0.1 hours per entry. Nearest rounds exact halves up; turn off the minimum in the calculator below.

Every minute, 1 to 60Round your own entryPrintable PDF

Every minute from 1 to 60

Compare rounding up with rounding to the nearest increment for every minute worked. For entries longer than an hour, use the calculator below.

6-minute increment chart (tenths of an hour)

6 min increments, minutes 1 to 15
MinUpNearest
10.10.1
20.10.1
30.10.1
40.10.1
50.10.1
60.10.1
70.20.1
80.20.1
90.20.2
100.20.2
110.20.2
120.20.2
130.30.2
140.30.2
150.30.3
6 min increments, minutes 16 to 30
MinUpNearest
160.30.3
170.30.3
180.30.3
190.40.3
200.40.3
210.40.4
220.40.4
230.40.4
240.40.4
250.50.4
260.50.4
270.50.5
280.50.5
290.50.5
300.50.5
6 min increments, minutes 31 to 45
MinUpNearest
310.60.5
320.60.5
330.60.6
340.60.6
350.60.6
360.60.6
370.70.6
380.70.6
390.70.7
400.70.7
410.70.7
420.70.7
430.80.7
440.80.7
450.80.8
6 min increments, minutes 46 to 60
MinUpNearest
460.80.8
470.80.8
480.80.8
490.90.8
500.90.8
510.90.9
520.90.9
530.90.9
540.90.9
551.00.9
561.00.9
571.01.0
581.01.0
591.01.0
601.01.0

The nearest column rounds exact halves up and uses a one-increment minimum per entry. You can turn that minimum off in the calculator.

Printable billing increment chart

The 6- and 15-minute charts on one A4 or US Letter page. Includes rounding up and to the nearest increment.

Free. No email or sign-up.

Round one time entry

Enter a duration and choose how to round it. Add an hourly rate to calculate the charge.

Time worked

Minutes can exceed 60, e.g. 107.

Billing increment
Rounding

Bills as

0.8hours

48 min billed, timesheet format 0:48

Rounding
+1 min
from 47 min worked
Billing increments
8
of 6 min
Value at 300 an hour
240.00
Exact time: 235.00

Rounded up to the next 6-minute increment. Seconds are ignored.

Rounding several entries? The billable hours calculator shows their combined value and how much rounding adds.

Hours:minutes and decimal hours

One hour 47 minutes is 1:47 in hours:minutes, or 1.7833… in decimal hours. Entering 1.47 in a decimal-hours field records less time.

Rounded up to six-minute increments, it becomes 1:48 or 1.8 hours. If your timesheet defines one unit as one hour, enter 1.8 units. In that system, 0.1 unit is six minutes.

Round each entry or the total?

At six-minute increments, two 7-minute calls round up to 12 minutes each: 24 minutes billed. Combine them first and the 14-minute total rounds up to 18 minutes. Agree which method applies before invoicing.

Calculate charges before rounding decimals

Ten minutes is 0.1666… hours, displayed as 0.17. Use billed minutes ÷ 60 × hourly rate to calculate the charge, then round the final amount.

For example, 20 minutes at 240 an hour costs 80.00. Using the displayed 0.33 hours instead gives 79.20.

Frequently asked questions

What does 0.1 mean on a legal bill?

One tenth of an hour, or six minutes. When one billing unit equals one hour, 0.3 units means 18 minutes of billed time.

How do you bill in 15-minute increments?

Each quarter hour is 0.25 hours. When rounding up, a 20-minute entry bills as 0.50 hours. Multiply the billed hours by your hourly rate.

Should you round up or to the nearest increment?

Follow the rule agreed with your client. Rounding up never reduces the time billed; rounding to the nearest can go either way. See billing increments explained for examples and policy wording.

What are 30-minute billing increments?

Half-hour blocks, each equal to 0.5 hours. Choose Custom in the calculator and enter 30 to use them.