Hours, Days, Weeks and Months: Conversion Tables
2 weeks is 336 hours, 100 hours is 4 days and 4 hours, and 3 months is about 13 weeks. Hours, days and weeks convert exactly; months and years vary, so the tables say which average they use.
Hours, minutes and seconds in a day, a week, a month
A day is 24 hours and a week is 168 hours, always. A month is not fixed: 28 days is 672 hours and 31 days is 744. The "average month" below is one twelfth of the average Gregorian year of 365.2425 days, which is 30.436875 days.
| Length | Hours | Minutes | Seconds |
|---|---|---|---|
| 1 day | 24 | 1,440 | 86,400 |
| 5 days | 120 | 7,200 | 432,000 |
| 1 week | 168 | 10,080 | 604,800 |
| 2 weeks | 336 | 20,160 | 1,209,600 |
| 4 weeks | 672 | 40,320 | 2,419,200 |
| 30 days | 720 | 43,200 | 2,592,000 |
| Average month | 730.49 | 43,829.1 | 2,629,746 |
| Average year | 8,765.82 | 525,949.2 | 31,556,952 |
Hours to days and weeks
Divide by 24 for days and by 168 for weeks. The "days and hours" column is what a countdown shows:
| Hours | Days | Days and hours | Weeks |
|---|---|---|---|
| 100 hours | 4.17 | 4 days 4 hours | 0.6 |
| 72 hours | 3 | 3 days 0 hours | 0.43 |
| 500 hours | 20.83 | 20 days 20 hours | 2.98 |
| 1,000 hours | 41.67 | 41 days 16 hours | 5.95 |
| 2,000 hours | 83.33 | 83 days 8 hours | 11.9 |
To see the date and time a number of hours from now (with any clock change in between), use 72 hours from now and change the number.
Weeks and months
Months use the average month above, so the answers are averages: 8 weeks is about 1.84 months, and 3 months is 13.04 weeks on average (12.71 to 13.14 depending on which three months).
| Length | Days | Weeks | Months |
|---|---|---|---|
| 8 weeks | 56 | 8 | 1.84 |
| 12 weeks | 84 | 12 | 2.76 |
| 3 months | 91.31 | 13.04 | 3 |
| 6 months | 182.62 | 26.09 | 6 |
| 1 year | 365.24 | 52.18 | 12 |
Quick rules
- Minutes in N hours: N × 60 (3 hours = 180 minutes).
- Hours in N days: N × 24 (5 days = 120 hours).
- Hours in N weeks: N × 168 (2 weeks = 336 hours).
- Days in N weeks: N × 7 (8 weeks = 56 days).
- Weeks in a year: 52 weeks and 1 day (52 weeks and 2 days in a leap year).
Timers for this guide
Questions and answers
How many hours are in 2 weeks?
336 hours: 14 days × 24 hours. That is 20,160 minutes.
How many days is 100 hours?
4 days and 4 hours, or about 4.17 days.
How many weeks is 3 months?
About 13 weeks: 12.71 weeks (89 days) for February to April in a common year, up to 13.14 weeks (92 days) for July to September.
How many hours are in a month?
672 to 744 hours, depending on the month; the average month is about 730.5 hours.