Hundredths of an Hour Chart
Convert any minute value (0–59) to hundredths of an hour. Used by attorneys for billing, payroll departments for time tracking, and project managers for task estimation.
| Minutes | Hundredths | Decimal |
|---|---|---|
| 0 min | .00 | 0.0000 |
| 1 min | .02 | 0.0167 |
| 2 min | .03 | 0.0333 |
| 3 min | .05 | 0.0500 |
| 4 min | .07 | 0.0667 |
| 5 min | .08 | 0.0833 |
| 6 min | .10 | 0.1000 |
| 7 min | .12 | 0.1167 |
| 8 min | .13 | 0.1333 |
| 9 min | .15 | 0.1500 |
| 10 min | .17 | 0.1667 |
| 11 min | .18 | 0.1833 |
| 12 min | .20 | 0.2000 |
| 13 min | .22 | 0.2167 |
| 14 min | .23 | 0.2333 |
| 15 min | .25 | 0.2500 |
| 16 min | .27 | 0.2667 |
| 17 min | .28 | 0.2833 |
| 18 min | .30 | 0.3000 |
| 19 min | .32 | 0.3167 |
| 20 min | .33 | 0.3333 |
| 21 min | .35 | 0.3500 |
| 22 min | .37 | 0.3667 |
| 23 min | .38 | 0.3833 |
| 24 min | .40 | 0.4000 |
| 25 min | .42 | 0.4167 |
| 26 min | .43 | 0.4333 |
| 27 min | .45 | 0.4500 |
| 28 min | .47 | 0.4667 |
| 29 min | .48 | 0.4833 |
| 30 min | .50 | 0.5000 |
| 31 min | .52 | 0.5167 |
| 32 min | .53 | 0.5333 |
| 33 min | .55 | 0.5500 |
| 34 min | .57 | 0.5667 |
| 35 min | .58 | 0.5833 |
| 36 min | .60 | 0.6000 |
| 37 min | .62 | 0.6167 |
| 38 min | .63 | 0.6333 |
| 39 min | .65 | 0.6500 |
| 40 min | .67 | 0.6667 |
| 41 min | .68 | 0.6833 |
| 42 min | .70 | 0.7000 |
| 43 min | .72 | 0.7167 |
| 44 min | .73 | 0.7333 |
| 45 min | .75 | 0.7500 |
| 46 min | .77 | 0.7667 |
| 47 min | .78 | 0.7833 |
| 48 min | .80 | 0.8000 |
| 49 min | .82 | 0.8167 |
| 50 min | .83 | 0.8333 |
| 51 min | .85 | 0.8500 |
| 52 min | .87 | 0.8667 |
| 53 min | .88 | 0.8833 |
| 54 min | .90 | 0.9000 |
| 55 min | .92 | 0.9167 |
| 56 min | .93 | 0.9333 |
| 57 min | .95 | 0.9500 |
| 58 min | .97 | 0.9667 |
| 59 min | .98 | 0.9833 |
Understanding Hundredths of an Hour
In the hundredths system, one hour is divided into 100 parts rather than 60 minutes. Each “hundredth” equals 36 seconds (0.6 minutes). This system is standard in legal billing, where attorneys track time in 6-minute increments (each increment = 0.10 of an hour).
The conversion is straightforward: divide the minutes by 60, then round to the nearest hundredth. For example, 22 minutes ÷ 60 = 0.3667, which rounds to .37 hundredths of an hour.
6-Minute Billing Increments
6 min
.10
12 min
.20
18 min
.30
24 min
.40
30 min
.50
36 min
.60
42 min
.70
48 min
.80
54 min
.90
60 min
1.00
In legal billing, tasks shorter than 6 minutes are typically rounded up to 0.10. A quick 2-minute email still counts as 0.10 hours billed. This is standard practice across most law firms.
Hundredths vs. Decimal Hours
Hundredths of an hour and decimal hours are effectively the same thing — both express time as a fraction of one hour. The term “hundredths” is more common in legal and professional services billing, while “decimal hours” is the standard term in payroll and HR. The math is identical: 15 minutes = 0.25 hours = 25 hundredths of an hour.