What a 168-hour audit is
Every week has exactly 168 hours (24 × 7). A 168-hour audit lists where they go: sleep, work or classes, commute, meals and getting ready, chores, exercise and the people in your life. Subtract that from 168 and what remains is the time you actually have for a goal. University study-skills centres have handed out paper versions of this exercise for years; this one does the arithmetic as you type and lays the result out as a week.
The point isn't the total. It's finding out, before you commit to a goal, whether the hours it needs exist and on which days they sit.
How to use the calculator
- Pick the preset closest to your week (9-to-5, student, nurse on 3×12 shifts, remote worker, working parent), then change the numbers to yours.
- Enter hours per week or per day. The toggle only changes how you type them; per day is easier for sleep and meals, per week for things that vary.
- Set the days. Work and exercise ask how many days a week they happen, so 8.5 hours a day on 5 days becomes 42.5 hours a week.
- Add the goal and the hours a week it needs, the days you want to spend on it and the time of day that suits you.
- Read the result, then check the 7-day schedule under it to see where those hours fall. Print it, or save it as a PDF.
A worked example
Here is the 9-to-5 preset, an office job from 9:00 to 17:30 with a 30-minute commute each way:
| Category | Arithmetic | Hours / week |
|---|---|---|
| Sleep | 7.5 h × 7 | 52.5 |
| Work | 8.5 h × 5 | 42.5 |
| Commute | 1 h × 5 | 5 |
| Meals & personal care | 2 h × 7 | 14 |
| Chores & errands | 1 h × 7 | 7 |
| Exercise | 1 h × 3 | 3 |
| Family & social | 1.5 h × 7 | 10.5 |
| Committed | 134.5 | |
| Left of 168 | 168 − 134.5 | 33.5 |
A side project at 5 hours a week fits, with 28.5 hours to spare. But look at where the 33.5 hours are. Awake from 7:00 to 23:30 is 16.5 hours a day. A workday takes 14 of them (8.5 work + 1 commute + 2 meals and care + 1 chores + 1.5 family), leaving 2.5 hours, or 12.5 across five weekdays. A weekend day takes 4.5, leaving 12, or 24 across the weekend. That's 36.5, minus 3 hours of exercise: 33.5.
So about two thirds of the free time is on Saturday and Sunday. A goal that needs an hour every weekday evening fits on paper and still competes with the end of a long day; the schedule makes that visible.
When it doesn't fit: the working-parent preset commits 152 hours, leaving 16. A goal that needs 20 hours a week is short by 4 hours, so something has to shrink first: the goal, chores (shared or batched), or a commute day worked from home.
What to do with the result
- It fits: give the goal fixed slots on specific days, the same way work has fixed hours. Hours that aren't assigned usually go to the phone.
- It fits by less than 5 hours: treat it as not fitting. A week with no slack breaks the first time something runs late.
- It doesn't fit: the calculator tells you by how many hours. Cut that much from one category on purpose, or make the goal smaller. Don't take it from sleep.
Common mistakes
- Counting sleep as 8 hours when it's 6.5. Use the time you actually spend in bed. If you don't know, a one-week log answers it.
- Forgetting the in-between time. Getting ready, cooking, driving to the gym and changing are real hours. Leaving them out is why plans look roomier than weeks feel.
- Planning all of the hours left. Unplanned time is where rest and the unexpected go. Keep some of it unassigned.
- Trusting the weekly total alone. 30 free hours spread as 2 a weekday and 10 a weekend day is a different week from 4 a day. Check the schedule, not just the number.
- Doing it once. Redo it when something big changes: a new job, a new semester, a new shift pattern, a baby.
Presets you can link to
Each preset has its own link, so you can send someone a starting point that looks like their week:
- 9-to-5 job: 134.5 h committed, 33.5 h left of 168.
- Student: 125.5 h committed, 42.5 h left of 168.
- Nurse, 3×12 shifts: 131 h committed, 37 h left of 168.
- Remote worker: 128 h committed, 40 h left of 168.
- Working parent: 152 h committed, 16 h left of 168.
Questions people ask
How many hours are in a week?
168: 24 hours a day times 7 days. Sleeping 7.5 hours a night uses 52.5 of them, which leaves 115.5 waking hours for everything else.
What is the 168-hour rule?
It's the idea that everyone gets the same 168 hours a week, so the useful question is where they go, not whether you have time. You list what's already committed, subtract it from 168, and plan the goal into what's left.
How many free hours does a full-time worker have?
With a 40-hour job plus lunch, an hour of commuting a day, 7.5 hours of sleep and about 4 hours a day for meals, chores and family, around 30 to 35 hours a week are left. Most of them fall on weekends, so a goal that needs weekday evenings has less room than the total suggests.
Is this the same as a time audit?
It's the planning half of one. A full time audit logs a real week in 30-minute slots and compares it with your estimate. This calculator works from your estimates, so it's quick; if the result surprises you, log one week to check it.
Is the weekly schedule maker free?
Yes. There's no account and no sign-up. The calculator runs in your browser and can remember your last numbers on this device. Print the week or save it as a PDF from the print dialog.
Why didn't everything fit on some days?
The weekly total can fit while a single day can't. A 12-hour shift day, for example, leaves little room for anything else. The schedule lists every block with no room on its day, so you can move it to a lighter day.