About Study Planner

Create a study schedule with optimal allocation across subjects and time. Part of the DevTools Surf developer suite. Browse more tools in the Calculators collection.

Use Cases

• Create a study schedule for a professional certification exam over 8 weeks.
• Plan subject allocation across multiple finals during a 3-week exam period.
• Build a daily study routine that accommodates work or class schedule constraints.
• Design a learning plan for self-study of a new technical subject over 3 months.

Tips

• Use spaced repetition scheduling rather than blocking — studying a topic across 5 sessions spread over 2 weeks retains 50–80% more information at test time than 5 consecutive sessions.
• Schedule hardest subjects when your cognitive energy peaks — most people have peak focus 2–4 hours after waking, before decision fatigue accumulates.
• Build in buffer time: plan for 80% efficiency, not 100% — a schedule with no slack fails on the first disruption and never recovers.

Fun Facts

• Hermann Ebbinghaus's forgetting curve (1885) showed that 75% of new information is forgotten within 6 days without review. Spaced repetition, which schedules reviews at optimal intervals, counters this and was formalized in SuperMemo software (1987).
• The Pomodoro Technique was developed by Francesco Cirillo in the late 1980s using a tomato-shaped kitchen timer (pomodoro in Italian). Its 25-minute focused-work/5-minute break cycle aligns with cognitive attention span research.
• A 2013 meta-analysis published in Psychological Science in the Public Interest ranked study strategies by effectiveness: distributed practice (spaced repetition) and retrieval practice (testing) were the only two rated 'high utility' out of 10 studied.

FAQ

How many hours per day should I study?

Research on elite performers (Anders Ericsson) suggests 4–5 hours of deliberate, focused study is the sustainable maximum before diminishing returns set in. Total time studied matters less than quality and distribution.

Should I study multiple subjects per day or block full days by subject?

Multiple subjects per day (interleaving) produces better long-term retention than blocking, though it feels less productive in the moment. Reserve single-subject full-day sessions for immersive project work, not concept learning.