How This Calculation Works
The study time planner distributes your available study hours across subjects based on their difficulty ratings. Harder subjects receive proportionally more time.
The number of recommended study sessions is based on 1.5-hour blocks — research shows that sessions longer than 90 minutes have diminishing returns without breaks.
Common Mistakes to Avoid
- Marathon study sessions. Studying for 4+ hours straight is less effective than multiple 1–1.5 hour sessions with breaks. Space your study over multiple days.
- Ignoring hard subjects. Students tend to study what they already know. Allocate more time to your weakest subjects — that is where the biggest gains are.
- Not reviewing. Spaced repetition (reviewing material at increasing intervals) dramatically improves long-term retention compared to cramming.
Worked Example
Scenario: 20 hours/week, 4 subjects: Math (difficulty 5), English (2), Physics (4), History (3).
Total weight: 5 + 2 + 4 + 3 = 14.
Math: 5/14 × 20 = 7.1 hrs/week (5 sessions).
English: 2/14 × 20 = 2.9 hrs/week (2 sessions).
Physics: 4/14 × 20 = 5.7 hrs/week (4 sessions).
History: 3/14 × 20 = 4.3 hrs/week (3 sessions).