MCAT Score Calculator: How Scaled Scoring Works and What to Estimate

An MCAT "score calculator" can only do part of the job. You can add four section scores to get a total, and you can look up a percentile if you have the official table. What you cannot do from first principles is convert a raw number of correct answers into a scaled score, because that conversion belongs to the exam developer and varies between test forms.

The scale

• Four sections: Chemical and Physical Foundations, Critical Analysis and Reasoning Skills (CARS), Biological and Biochemical Foundations, and Psychological, Social, and Biological Foundations.
• Each section is reported from 118 to 132, with 125 as the midpoint.
• The total is the sum of the four, from 472 to 528, with 500 as the midpoint.
• Questions are multiple choice and there is no penalty for guessing, so answer every question.

Raw to scaled

Your raw score is the number of questions you answer correctly. It is converted to the scaled score using a process called equating, so that a score means the same thing across different test forms: a harder form gets a more generous conversion. This is why the same raw score on two practice tests can map to different scaled scores.

Using a calculator well

1. Enter section scores, not guesses. Use scores from full-length, timed practice exams from official or well-calibrated sources.
2. Use a range. Practice test scores vary by several points between forms. A trend over three or more tests is more reliable than one result.
3. Look up percentiles from the current official table. Percentile ranks are published by the AAMC and are updated, so check the latest rather than quoting an old number. Our MCAT score calculator and percentile tool is a convenient place to try values.
4. Work backward from the target. Set the score your programs expect, divide by four for a rough section average, and see which sections lag.

Balance matters

A total score hides the shape. A 510 built from four 127 to 128 scores looks different to an admissions reader than one with a 132 and a 120. Programs may also look at section scores, so do not trade away CARS or one science section to boost the others.

Turning a score gap into a plan

• Gap of a few points: targeted content review and more timed passages.
• Larger gap: rebuild foundations, then add timed practice. See how long to study for the MCAT for sizing a timeline, and use the study schedule generator to lay it out week by week.

Common traps

• Treating one practice score as your score. Use a trend.
• Trusting raw-to-scaled charts from other forms. Conversions differ by form.
• Leaving questions blank. There is no guessing penalty.
• Quoting a percentile from memory. Check the current official table.

One-minute recap

• Sections run 118 to 132; the total runs 472 to 528.
• Raw correct answers are equated to a scaled score that differs by form.
• Use trends and the official percentile table, and always guess.