You know your practice score and you know your target — the missing piece is how much work sits between them. This calculator turns the gap into a concrete time budget for the six major admissions tests, using each exam’s typical study-hour benchmark per point gained.
How it works
The calculator first finds the points you need to gain, then multiplies by an exam-specific hours-per-point benchmark, with a mild penalty as your target climbs toward the top of the scale:
pointsToGain = max(0, target - current)
hoursPerPoint = base benchmark for the exam
difficultyFactor = 1 + (target - midScale) / scaleRange (clamped 0.8 to 1.6)
totalHours = pointsToGain × hoursPerPoint × difficultyFactor
weeks = totalHours / weeklyHoursThe difficulty factor reflects diminishing returns: a 50-point gain near the top of the SAT scale takes more hours than the same gain from the middle.
Exam scale reference
Understanding the scale for your exam helps you set a realistic target:
| Exam | Score range | Notes |
|---|---|---|
| SAT | 400–1600 | Two sections (Math + Reading/Writing), each 200–800 |
| ACT | 1–36 | Composite of four sections (English, Math, Reading, Science) |
| GRE | 260–340 | Two sections (Verbal + Quant), each 130–170 |
| GMAT | 205–805 | Total score; Official new format introduced in 2023 |
| LSAT | 120–180 | Typically 101 scored questions |
| MCAT | 472–528 | Four sections, each 118–132 |
Enter your current practice score and target within the valid range for your chosen exam.
Worked example
SAT from 1250 to 1400
The gap is 150 points. Using a benchmark of roughly 0.5 hours per point and a difficulty factor slightly above 1.0 for the upper-middle part of the SAT scale, the total estimate is around 80–100 study hours — approximately 8–10 weeks at 10 hours per week.
GRE Verbal from 148 to 158
The gap is 10 points on a 130–170 scale. The GRE Verbal section is knowledge-intensive (vocabulary, reading comprehension), so gains typically require more focused drill time than a comparable gap on the SAT. At a higher hours-per-point rate, 10 points might require 40–60 hours of targeted prep.
Getting more from the hours you invest
Raw study hours are less predictive of score gains than how you use them. The highest-leverage activities are:
- Full timed practice tests — not untimed, not section-only. The endurance and pacing skills learned under realistic conditions transfer directly.
- Mistake review — every missed question is a data point. Understand why you chose the wrong answer, not just what the right one is.
- Targeted drilling on weak areas — identify by section which question types you miss most, then drill those specifically rather than cycling through all content equally.
This tool gives you a time budget; the return on that budget depends on study quality, not just volume.