How to Convert Time into Decimal Format
Transforming time into decimal values is a critical process in numerous areas such as payroll processing, time management, and project planning. This tutorial outlines the steps to convert hours, minutes, and seconds into a decimal number, with results rounded to six decimal places to ensure accuracy.
Why Use Decimal Time Format?
Using standard time notation (HH:MM:SS) can be challenging for mathematical operations. Expressing time in decimal form streamlines tasks such as multiplying time by hourly rates, adding up time intervals, and conducting statistical analyses.
The Concept of Decimal Time
Each unit of time represents a fraction of the next higher unit:
1 hour = 1.00
1 minute = 1/60 hours ≈ 0.016667 hours
1 second = 1/3600 hours ≈ 0.000278 hours
Formulas for Time Conversion to Decimal
Apply the following formulas to convert time into decimal units:
-
Decimal Hours = Hours + (Minutes ÷ 60) + (Seconds ÷ 3600)
-
Decimal Minutes = (Hours × 60) + Minutes + (Seconds ÷ 60)
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Decimal Seconds = (Hours × 3600) + (Minutes × 60) + Seconds
Time to Dcimal Conversion Chart
| Minutes | Hour Decimal |
|---|---|
| 1 | 0.02 |
| 2 | 0.03 |
| 3 | 0.05 |
| 4 | 0.07 |
| 5 | 0.08 |
| 6 | 0.10 |
| 7 | 0.12 |
| 8 | 0.13 |
| 9 | 0.15 |
| 10 | 0.17 |
| 11 | 0.18 |
| 12 | 0.20 |
| 13 | 0.22 |
| 14 | 0.23 |
| 15 | 0.25 |
| 16 | 0.27 |
| 17 | 0.28 |
| 18 | 0.30 |
| 19 | 0.32 |
| 20 | 0.33 |
| 21 | 0.35 |
| 22 | 0.37 |
| 23 | 0.38 |
| 24 | 0.40 |
| 25 | 0.42 |
| 26 | 0.43 |
| 27 | 0.45 |
| 28 | 0.47 |
| 29 | 0.48 |
| 30 | 0.50 |
| 31 | 0.52 |
| 32 | 0.53 |
| 33 | 0.55 |
| 34 | 0.57 |
| 35 | 0.58 |
| 36 | 0.60 |
| 37 | 0.62 |
| 38 | 0.63 |
| 39 | 0.65 |
| 40 | 0.67 |
| 41 | 0.68 |
| 42 | 0.70 |
| 43 | 0.72 |
| 44 | 0.73 |
| 45 | 0.75 |
| 46 | 0.77 |
| 47 | 0.78 |
| 48 | 0.80 |
| 49 | 0.82 |
| 50 | 0.83 |
| 51 | 0.85 |
| 52 | 0.87 |
| 53 | 0.88 |
| 54 | 0.90 |
| 55 | 0.92 |
| 56 | 0.93 |
| 57 | 0.95 |
| 58 | 0.97 |
| 59 | 0.98 |
| 60 | 1.00 |
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