Time Conversion: 1 month ≈ 30.44 days | Essential for planning, billing and time tracking
Accurate conversion between days and months for planning, project management, billing cycles, and personal time tracking. Supports average and calendar-based time unit conversions.
Conversion Factor
1 month ≈ 30.44 days (avg) | 1 day ≈ 0.03285488 months
Precision: 2 Decimal Places | Formula: months = days × 0.03285
Understanding these essential time units for planning, project management, and daily time tracking.
Day to Month Conversion
1 month ≈ 30.4375 days (average)
1 day ≈ 0.03285488 months
Months = Days × 0.03285488
Days = Months × 30.4375
Convert 60 days to months:
months = days × 0.03285488
months = 60 × 0.03285488
months = 1.97 (with 2 decimal places)
Convert 3 months to days:
days = months × 30.4375
days = 3 × 30.4375
days = 91.31 (with 2 decimal places)
Note: These conversions use the average month length (365.25 days ÷ 12 months = 30.4375 days)
A unit of time equal to one full rotation of the Earth on its axis, approximately 24 hours. It is the fundamental unit of time for daily scheduling and tracking.
Equivalents:
Note: A sidereal day (Earth's rotation relative to stars) is ~23h 56m
A unit of time based on the Moon's orbital period around the Earth. Calendar months vary in length (28-31 days), while the average month is ~30.44 days.
Equivalents:
Note: The synodic month (lunar cycle) is ~29.53 days
| Month | Days (Common Year) | Days (Leap Year) | Approx. Months (Avg) |
|---|---|---|---|
| January | 31 | 31 | 1.02 |
| February | 28 | 29 | 0.92 / 0.95 |
| March | 31 | 31 | 1.02 |
| April | 30 | 30 | 0.99 |
| May | 31 | 31 | 1.02 |
| June | 30 | 30 | 0.99 |
| July | 31 | 31 | 1.02 |
| August | 31 | 31 | 1.02 |
| September | 30 | 30 | 0.99 |
| October | 31 | 31 | 1.02 |
| November | 30 | 30 | 0.99 |
| December | 31 | 31 | 1.02 |
Common questions about days, months, and time unit conversions.
The average number of days in a month is approximately 30.4375 days. This calculation is based on the tropical year (365.25 days) divided by 12 months. The relationship can be expressed in multiple ways:
1 month (avg) = 30.4375 days
1 day = 0.03285488 months
Days to Months: months = days × 0.03285488
Months to Days: days = months × 30.4375
Calendar months vary in length (28 to 31 days), but the average is used for general conversions when exact calendar dates are not required.
The varying lengths of calendar months date back to the Roman calendar, with adjustments made by Julius Caesar and Augustus Caesar:
This converter uses the average month length for simplified conversions, while also providing reference for individual calendar month lengths.
The average conversion factor (30.4375 days per month) already accounts for leap years (365.25 days per year). For precise calendar-based conversions, however, leap years only affect February and the overall year length:
For project planning or billing that requires exact dates, we recommend using a calendar alongside this converter for maximum precision.
Choosing between average and exact month lengths depends on your specific use case and required precision:
This converter defaults to the average month length for simplicity, while also providing a comprehensive calendar month length table for users who need exact precision.
Calendar months and lunar months are two distinct time units based on different astronomical cycles:
This converter uses Gregorian calendar months (solar-based) for all conversions, as they are the standard for most modern planning and tracking purposes.
Common time measurements for planning, project management, and billing cycles.
| Days | Months (Avg) | Weeks | Hours | Common Uses |
|---|---|---|---|---|
| 7 | 0.23 | 1 | 168 | Weekly planning, pay cycles |
| 14 | 0.46 | 2 | 336 | Fortnightly billing, short projects |
| 30 | 0.99 | 4.29 | 720 | Monthly estimates, billing cycles |
| 31 | 1.02 | 4.43 | 744 | 31-day months (Jan, Mar, May) |
| 60 | 1.97 | 8.57 | 1440 | 2-month projects, short-term goals |
| 90 | 2.96 | 12.86 | 2160 | 3-month challenges, project milestones |
| 180 | 5.91 | 25.71 | 4320 | 6-month planning, half-year reviews |
| 365 | 11.99 | 52.14 | 8760 | 1-year planning, annual goals |
| 366 | 12.02 | 52.29 | 8784 | Leap year tracking, annual cycles |
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