Free Tool · Per-Subject Allocation · Weighted Support

Study Time Calculator

Plan how many hours each subject gets before your exam — with a per-subject allocation table and support for unequal weighting.

1 Your available time
2 Your subjects

Enter each subject's name and a priority weight. Equal weights (all 1) split time evenly. Use larger weights for harder or higher-content subjects.

# Subject name Weight
Preview: enter your days and daily hours

What this study time calculator does

This tool takes three inputs — days until your exam, study hours per day, and your list of subjects — and returns a complete study plan. It computes your total available study hours, then distributes them across subjects. If all subjects carry equal weight, the time is split evenly. If you assign priority weights (say 3 to Maths, 2 to Physics, 1 each to Urdu and Islamiat), the total hours are allocated proportionally to those weights. The result shows a per-subject allocation table with a visual bar for each subject's share, plus practical context notes about whether the plan is realistic for the time you have.

Formula

Total available study hours
Total hours = days × daily hours
Hours per subject (equal weights)
Hours per subject = days × daily hours number of subjects
Hours per subject (weighted)
Hoursi = days × daily hours × wi Σ wj

Variable definitions

  • days — number of days remaining before the exam.
  • daily hours — the average hours you can study per day.
  • wi — the priority weight of subject i (any positive number; default 1).
  • Σ wj — the sum of all subject weights.

When every weight is 1, the weighted formula reduces to the equal-weights formula — because Σ wj = number of subjects. This makes the weighted version the general case and equal weighting a special case of it.

Worked examples

Example 1: 45 days, 4 hours/day, 5 subjects (equal weights)

Days: 45 · Daily hours: 4 · Subjects: Maths, Physics, Chemistry, Urdu, Islamiat (all weight 1)
  1. Total available hours: 45 × 4 = 180 hours.
  2. Number of subjects: 5.
  3. Hours per subject: 180 / 5 = 36 hours each.
  4. Per day per subject: 36 / 45 = 0.8 hours, i.e. 48 minutes per subject per day.

Example 2: 45 days, 4 hours/day, weighted subjects

Weights: Maths 3, Physics 2, Chemistry 2, Urdu 1, Islamiat 1
  1. Total available hours: 45 × 4 = 180 hours.
  2. Σ weights: 3 + 2 + 2 + 1 + 1 = 9.
  3. Maths: 180 × 3/9 = 60 hours.
  4. Physics: 180 × 2/9 = 40 hours.
  5. Chemistry: 180 × 2/9 = 40 hours.
  6. Urdu: 180 × 1/9 = 20 hours.
  7. Islamiat: 180 × 1/9 = 20 hours.
  8. Check: 60 + 40 + 40 + 20 + 20 = 180 ✓

Example 3: A short plan (10 days)

Days: 10 · Daily hours: 5 · Subjects: 4 (equal weight)
  1. Total hours: 10 × 5 = 50 hours.
  2. Hours per subject: 50 / 4 = 12.5 hours.
  3. Per day per subject: 12.5 / 10 = 1.25 hours (75 minutes).
  4. Verdict: workable, but tight. A short plan leaves no buffer for revision.

Example 4: A generous plan (90 days)

Days: 90 · Daily hours: 3 · Subjects: 6 (equal weight)
  1. Total hours: 90 × 3 = 270 hours.
  2. Hours per subject: 270 / 6 = 45 hours each.
  3. Per day per subject: 45 / 90 = 0.5 hours (30 minutes).
  4. Verdict: generous. Plenty of time to cover every subject thoroughly and revise.

Example 5: Under-allocated plan (7 days)

Days: 7 · Daily hours: 2 · Subjects: 5 (equal weight)
  1. Total hours: 7 × 2 = 14 hours.
  2. Hours per subject: 14 / 5 = 2.8 hours per subject.
  3. That is roughly 34 minutes per subject per day.
  4. Verdict: under-allocated. 2.8 hours is not enough to cover a full BISE subject in a week. Either increase daily hours, start earlier, or prioritise.

Example 6: One subject only (a single subject exam)

Days: 20 · Daily hours: 4 · Subjects: 1 (Maths)
  1. Total hours: 20 × 4 = 80 hours.
  2. Hours per subject: 80 / 1 = 80 hours for Maths.
  3. Per day: 80 / 20 = 4 hours per day on Maths.
  4. Verdict: very thorough. Suitable for a single-subject retake or an olympiad preparation.

How to weight subjects realistically

The weight column is the most important input for a realistic plan. Three factors should drive each subject's weight:

  • Content volume — subjects with more chapters (Maths, Physics) need more time than subjects with fewer (Urdu grammar, Islamiat).
  • Current weakness — a subject you score 45% in needs more time than one you score 85% in, because you are building from a lower base.
  • Exam weight — some papers carry more marks than others. If a subject is worth 150 marks versus 75, it deserves proportionally more time.

A simple scheme that works for most BISE students: weight 3 for your two weakest subjects, 2 for your middle subjects, 1 for your strongest. This keeps the plan manageable while correcting for where the marks are actually at risk.

Common mistakes to avoid

  • Overestimating daily hours. Most students plan for 8 hours and deliver 3. Enter the number of hours you actually study, not the number you wish you studied.
  • Giving every subject equal weight when they don't deserve it. A flat split is a starting point, not a plan. Adjust weights based on weakness and content volume.
  • Forgetting revision time. The plan covers first-time learning. Reserve the last 20–25% of the total for revision and past papers.
  • Ignoring days you cannot study. If you have family events, sports, or religious commitments, subtract those days from the total before entering. Days-until-exam is calendar days, not study days.
  • Treating the plan as a contract. It is a guide. If a subject turns out easier than expected, move the saved hours to a harder one. If it turns out harder, take hours from an easier one.
  • Building a plan with less than 2 hours per subject. That is a warning, not a plan. Either increase daily hours, start earlier, or drop subjects from the current focus.
  • Confusing study hours with effective hours. An hour of focused, distraction-free study is worth two hours of phone-in-hand study. The calculator uses wall-clock hours — you supply the quality.

FAQ

How do I calculate study time per subject?

Multiply the number of days remaining before your exam by the hours you can realistically study per day. That gives your total available study hours. Divide by the number of subjects to get the average hours per subject. This calculator also supports unequal weighting — for example, giving Maths and Physics more time than a lighter subject.

How many hours a day should I study?

For most Pakistani secondary students, 3 to 5 focused hours per weekday is a sustainable target, with 5 to 7 hours on weekends. Beyond 6 hours in one sitting, retention drops sharply. It is better to study 4 focused hours consistently than to cram 8 distracted hours in one day.

Should every subject get the same time?

No. Subjects with more content, weaker current performance, or higher exam weight should get more time. This calculator supports per-subject weights so you can allocate time proportionally — for example, 3 units to Maths, 2 to Physics, 1 each to Urdu and Islamiat.

Does this calculator count weekends differently?

No. It multiplies total days by average daily hours, treating every day the same. If you study 2 hours on weekdays and 6 on weekends, average those into a single daily figure — for example, 5 weekdays × 2 plus 2 weekend days × 6 divided by 7 days = about 3.14 hours per day — and use that value.

What if the result is very low?

If each subject gets less than 2 hours, the plan is under-allocated. Consider increasing daily hours, starting earlier, or prioritising the highest-weight subjects. A plan with very few hours is not a plan — it is a warning that you have left too little time.

Should I include revision time in the plan?

Yes. Reserve the last 20 to 25 percent of your available days for revision and past papers, and use the earlier portion for first-time learning. In this calculator, enter days-until-exam as the total, then mentally set aside the last quarter of the result's total hours for revision.

Related tools

Related Hira Academy resources

Plan your term with the free Student Portal, and revise subject content with our Class 9 notes and Class 10 notes.

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