Hours to days converter

To convert hours to days, divide the hours by 24, because one day has 24 hours. To convert days to hours, multiply the days by 24. A week is 7 days, so it has 168 hours.

The word “day” has two meanings in these sums, and the answer depends on which one is meant. A day on the clock is 24 hours, from one midnight to the next. A working day is the part of a day spent at work, and this page counts it as 8 hours, a common full-time day.

The two kinds of day give very different answers. A job that needs 100 hours of work takes 12.5 working days, yet the same 100 hours is only 4.17 days on the clock. Every answer on this page says which kind of day it uses.

One hundred hours is 4.17 days of 24 hours: 100 ÷ 24 = 4.17. Counted in whole days, 100 hours is 4 days and 4 hours, a little more than half a week.

As working time, 100 hours is 12.5 working days of 8 hours, or 2.5 work weeks of 40 hours.

One thousand hours is 41.67 days of 24 hours: 1,000 ÷ 24 = 41.67. Counted in whole days, 1,000 hours is 41 days and 16 hours, or 5.95 weeks around the clock.

As working time, 1,000 hours is 125 working days of 8 hours. Those working days make 25 work weeks of 40 hours, which is close to half a year of full-time work.

Five days have 120 hours: 5 days × 24 hours. That count includes every hour on the clock, nights included. Five working days of 8 hours, which is a Monday-to-Friday work week, have 40 working hours.

Two weeks have 336 hours: 14 days × 24 hours, or 2 weeks × 168 hours in a week. Two weeks hold ten working days from Monday to Friday. At 8 hours a working day, ten working days are 80 working hours. That is the number of hours on a full-time paycheck that covers two weeks.

Thirty days have 720 hours: 30 days × 24 hours. April, June, September and November are each exactly thirty days long. Thirty working days of 8 hours are a different amount: 240 working hours. At five working days a week, thirty working days take six weeks on the calendar. The hours in each month of the year are on how many hours are in a month.

Three months have 2,136 to 2,208 hours, depending on which months they are. Three months in a row hold 89 to 92 days, and each day has 24 hours. The shortest run is February, March and April in a year when February has 28 days.

The average for three months is 2,190 hours, a quarter of the 8,760 hours in a year of 365 days. For a full-time job, three months are 520 working hours: the 2,080 hours of a full-time year divided by four, before holidays and time off.

Six months have 4,344 to 4,416 hours, depending on which months they are. Six months in a row hold 181 to 184 days, and each day has 24 hours.

The average for six months is 4,380 hours, half of the 8,760 hours in a year of 365 days. For a full-time job, six months are 1,040 working hours: half of the 2,080 hours in a full-time year, before holidays and time off. The whole year is counted on how many hours are in a year.

A conversion tells you how long a number of hours is. It cannot tell you how many hours you have put in so far, and for a long goal that is the harder number to get. One hour a day for a year sounds exact, but real days vary, and a guess made from memory at the end of a month is hard to trust.

The dependable way to know is to write the hours down on the day they happen. One week of that is enough to see what a normal week holds, and the weekly math is on how many hours are in a week. The Where did my week go? calculator gives a first estimate from one typical day, and time journaling is the habit of keeping the count going in plain words.

A big total of hours is reached a little at a time, and without a running count it is hard to know how far along you are.

A good way to keep that count takes the hours from what you already write or say about your day, with no timer to start, and adds them up for you. Most journaling apps keep how the day felt, which is worth having, but they do not add up the hours you gave to the thing you are working toward.

One app built for this is Think in Numbers, a smart journaling app with time tracking built in.

You write or say your day in your own words, as it happens or all at once. The app reads what you wrote and counts the hours that went to each part of it: practice, study, work, sleep, your phone, and the time you never mentioned (shown as unaccounted). Then it shows those hours over days and weeks. Targets set your real hours beside the hours you planned. Add your hour of practice as a daily habit, and the app ticks it off when the hours you wrote reach it.

Write my first day

Download on the App StoreGet it on Google Play

Or scan with your phone's camera.

For iPhone and Android. Try it on your own day before you pay.