One ECTS credit represents a workload, not just class time. It includes lectures, reading, assignments, and exam preparation, which is why converting credits to weekly hours helps you plan a realistic timetable.
How it works
One ECTS credit equals about 25 to 30 hours of total student work, with the exact figure set by the institution. A full-time academic year is 60 ECTS, or 1,500 to 1,800 hours. To get weekly hours: total hours = credits x hours per credit, then divide by the number of teaching weeks. A full-time semester of 30 ECTS over 20 weeks is about 37.5 to 45 hours per week, which is why it is treated as a full-time job.
Step by step
- Find how many ECTS credits the course or semester carries.
- Find your institution hours-per-credit figure, or use 27.5 as a midpoint planning figure.
- Multiply credits by hours per credit for total workload hours.
- Find the number of teaching weeks in the term.
- Divide total hours by weeks for weekly study hours.
- Split weekly hours into contact time and self-study to build your timetable.
Worked example
A 6 ECTS course at 27.5 hours per credit is 165 total hours. Over a 14-week term, that is 165 / 14 = 11.8 hours per week. If the course has 3 contact hours per week, self-study is about 8.8 hours per week. A full 30 ECTS semester at 25 hours per credit over 20 weeks is 750 / 20 = 37.5 hours per week, while at 30 hours per credit it is 900 / 20 = 45 hours per week.
Common mistakes
- Counting only lecture hours and ignoring reading and assignments, which are most of the workload.
- Using another university hours-per-credit figure instead of your own.
- Dividing by calendar weeks including holidays instead of teaching weeks.
- Planning every week at the average, when deadline weeks need far more.
Try it with the free tool
You can follow every step above by hand, but the free tool below does the same calculation instantly. Try your own numbers in it, then check one result by hand so you trust the method as well as the answer. Open the full tool here: open the tool.
Checklist before you finish
- Write down every input number first, with its unit, before you calculate anything.
- Work through the steps in order, and do not skip the unit conversions.
- Check the answer against the worked example above: is it the right size, and does the direction make sense?
- Round only at the end, and keep the unrounded figure for any follow-up calculation.
Practice with your own numbers
Pick three cases of your own and work each one by hand. First, try a simple round-number case you can check mentally. Second, try a realistic case with awkward numbers, the kind you will actually meet. Third, try an edge case, such as a very small or very large input, and confirm the answer still behaves sensibly. If any case gives a surprising result, re-check the units and the formula step by step before you trust it.
If your answer looks wrong
Most errors come from a small set of causes. Check that you used the same units throughout, that you divided where the formula divides and multiplied where it multiplies, and that you applied any percentage as a decimal. Check the order of operations: powers and brackets come before multiplication and division, which come before addition and subtraction. Finally, test the method on the worked example in this guide. If your method reproduces the example answer, the method is right and the inputs deserve a second look.
Quick tips
Build your timetable from the high end of the range for your hardest courses, so deadline weeks do not break it. If your total passes 45 hours a week, talk to your advisor about dropping or deferring a course.