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ACT Score Calculator

Last updated: May 31, 2026

Written by Blake Boege

An ACT score calculator is an educational assessment tool that translates a student's raw score from the four ACT sections (English, Math, Reading, Science) into scaled scores from 1 to 36. It then computes the composite score by taking the arithmetic mean of the four scaled scores, rounded to the nearest whole number. It is used by test-takers to grade practice exams and predict their official ACT composite score.

Enter your raw scores for English (out of 75), Math (out of 60), Reading (out of 40), and optionally Science (out of 40), and the calculator returns your estimated ACT composite score (1-36) plus a percentile estimate. As of April 2025, Science is optional and does NOT count toward your composite — your composite is just the average of English, Math, and Reading scaled scores. This is an estimate based on community-derived conversion tables; actual scores depend on the specific test form.

Quick Answer

Calculate your estimated ACT composite score. Enter your raw score (number of correct answers) for English, Math, Reading, and Science to see your scaled score out of 36.

Section scores

Enter raw correct answers for each section.

English

e.g. 75

Math

e.g. 60

Reading

e.g. 40

Estimate, not official. Unofficial ACT score estimator based on community-derived conversions. The official conversion table varies slightly for each specific test form.
Estimated ACT score

Composite Score (1-36)

28

~88th percentile

English29
Math29
Reading25

About Composite scoring

As of April 2025, Science is optional and does NOT count toward your composite score. Your composite is the strict average of your English, Math, and Reading scaled scores, rounded to the nearest whole number.

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Examples

Excellent (32-36)

English 68/75 · Math 54/60 · Reading 37/40 · Composite ~33 (~98th percentile)

Above average (26-31)

English 50/75 · Math 40/60 · Reading 28/40 · Composite ~28 (~88th percentile)

Average (18-25)

English 38/75 · Math 27/60 · Reading 20/40 · Composite ~22 (~63rd percentile)

Below average (1-17)

English 25/75 · Math 18/60 · Reading 14/40 · Composite ~18 (~39th percentile)

How it works

The ACT has three required sections — English (75 questions), Math (60 questions), and Reading (40 questions) — plus an optional Science section (40 questions). Each section's raw score (number correct) is converted to a scaled score from 1 to 36 using a conversion table specific to that test form. Your composite score is the average of your English, Math, and Reading scaled scores, rounded to the nearest whole number (0.5 rounds up). Science, if taken, is reported separately and combined with Math to produce a STEM score. There's no penalty for wrong answers — always answer every question.

Composite = (English + Math + Reading) ÷ 3, rounded to nearest whole. Science is reported separately.

What this calculator does

The ACT score calculator helps you sanity check where your practice exam performance lands on the 1-36 ACT scale. Enter your raw correct count for each section, and the calculator returns your estimated section scaled scores and composite, plus a percentile estimate. Use this to identify your weakest section and prioritize study time there. Note: actual ACT scores depend on the specific test form, so estimates are typically within ±1 point of your actual score.

How the ACT is scored

The ACT scoring process has three steps. Step 1: count raw correct answers for each section. There's no penalty for wrong answers, so always guess. Step 2: convert each section's raw score to a scaled score (1-36) using a conversion table that ACT publishes for each test form. The conversion table accounts for the specific test's difficulty so that scaled scores are comparable across test dates. Step 3: average your English, Math, and Reading scaled scores (NOT Science) to get your composite, rounded to the nearest whole number. Science, if taken, is reported separately. As of April 2025, ACT made Science optional and removed it from the composite — this matches what college admissions officers were already doing (most colleges focused on the composite, treating Science as supplementary). If you take Science, you'll also receive a STEM score (average of Math and Science scaled scores).

How to use it

  1. Take a full-length ACT practice test under timed conditions.
  2. Count your raw correct answers for English (out of 75), Math (out of 60), and Reading (out of 40).
  3. Decide whether you took the optional Science section. If yes, count your raw correct answers (out of 40).
  4. Enter your raw scores into the calculator and toggle Science on if applicable.
  5. Read your estimated section scaled scores, composite, and percentile.
  6. If you took Science, also note your STEM score.
  7. Identify your weakest section and prioritize practice there.

Worked example

ACT, 50 out of 75 English correct, 40 out of 60 Math correct, 28 out of 40 Reading correct, Science not taken.

  • English scaled estimate: ~29
  • Math scaled estimate: ~29
  • Reading scaled estimate: ~25
  • Composite: (29 + 29 + 25) ÷ 3 = 27.67 → rounds UP to 28
  • Percentile estimate: ~88th (you scored higher than about 88% of test-takers)
  • Score range interpretation: 28 is a strong score — above the national average (~21) and competitive for most colleges. Selective universities typically expect 30+, and elite universities (Harvard, MIT, Stanford) typically expect 33+.

The takeaway: ACT rewards balanced performance across all three required sections because they're averaged equally. Improving your weakest section (in this example, Reading at 25) by even 2-3 scaled points can lift your composite by a full point. Focus study time on your weakest section, not your strongest.

Common mistakes

  • Treating the estimate as official. Actual scaled scores depend on the specific test form's difficulty. ACT publishes a conversion table for each test, and they vary by 1-2 raw points per scaled score level.
  • Skipping questions. There's no penalty for wrong answers on the ACT — always guess on every question. With four answer choices, random guessing gives ~25% odds of being correct.
  • Including Science in your composite. As of April 2025, Science is NOT part of the composite. Don't compare your composite to old scores that included Science.
  • Pacing wrong. The ACT is notorious for tight pacing — especially Reading (~52 seconds per question) and Science (~52 seconds per question). Practice under strict time limits, not just untimed.
  • Misjudging Reading difficulty. ACT Reading has narrower scoring tolerance — missing just 1-2 questions can drop your scaled score by a full point at the top end (Raw 38 = 34, Raw 40 = 36).
  • Skipping the calculator on Math. The ACT allows approved graphing calculators on Math. Know your calculator's functions cold before test day.

Disclaimer. This calculator is an estimate based on community-derived conversion tables. Actual ACT scores are determined by ACT, Inc. using conversion tables specific to each test form. It is not affiliated with, endorsed by, or sponsored by ACT, Inc. ACT is a registered trademark of ACT, Inc. and is used here only as a descriptor.

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Frequently asked questions

No. This is an estimate based on community-derived conversion tables from recent ACT test forms. The official conversion table varies slightly for each specific test form, and ACT publishes the exact conversion only with score reports. This calculator is not affiliated with or endorsed by ACT, Inc.

Each section (English, Math, Reading, optional Science) has a raw score (number of correct answers) converted to a scaled score from 1 to 36. Your composite is the average of your English, Math, and Reading scaled scores, rounded to the nearest whole number (0.5 rounds up). Science, if taken, is reported separately and contributes to a STEM score (average of Math and Science).

The average ACT composite is around 21. A score of 24+ (74th percentile) is considered good. 28+ (88th percentile) is competitive for most selective colleges. 32+ (97th percentile) is excellent and competitive for elite universities. Top universities like Harvard, MIT, and Stanford typically admit students with composites between 33-36.

As of April 2025, Science is OPTIONAL on the ACT. If you choose to take it, your Science score is reported separately and does NOT count toward your composite. Science is also combined with Math to produce a STEM score. Many students now skip Science entirely. Check with your target colleges to see if they require or prefer Science scores — most do not.

No. You should answer every question, even if you're guessing. A wrong answer and a skipped answer both give you zero raw points, so there's no downside to guessing. With four answer choices, random guessing has a 25% chance of being correct.

Both SAT and ACT are accepted by virtually all US colleges. The SAT is adaptive, shorter (2h 14min), and uses a built-in Desmos calculator on all Math questions. The ACT is non-adaptive, longer for full test, and has tighter pacing per question. The ACT has historically included Science (now optional), which the SAT doesn't have. Students who prefer adaptive testing and stronger reading skills tend to favor the SAT; students who excel in faster-paced questions tend to favor the ACT. Take a practice test of each and pick the one you score higher on.

The Enhanced ACT (2025+ format) is approximately 2 hours 5 minutes without Science, or 2 hours 50 minutes with Science. English is 45 minutes (75 questions), Math is 50 minutes (60 questions), Reading is 40 minutes (40 questions), and optional Science is 40 minutes (40 questions). The optional Writing test adds another 40 minutes if taken.

Superscoring is when colleges take your highest scaled scores in each section across multiple ACT attempts and combine them into a new composite. For example, if you scored English 32, Math 28, Reading 30 on one test and English 29, Math 31, Reading 28 on another, your superscore would use English 32, Math 31, Reading 30 = composite 31. Many top universities accept ACT superscores, including the University of Michigan, Duke, and Johns Hopkins. ACT now sends superscores automatically with your score report. Most students should take the ACT 2-3 times to maximize superscoring potential.

You can take the ACT up to 12 times total. ACT offers test dates 7 times per year (September, October, December, February, April, June, July). Most students take the ACT 2-3 times. Score improvement from retesting is common — about 57% of students see at least a small composite increase on retest.

Take a full-length timed practice test first to identify weak sections. Focus study time on your weakest section, since composite improvement comes from raising your lowest scores. Use official ACT practice tests (available free from ACT.org) — they're the closest match to the real exam. Practice pacing rigorously: ACT Reading and Science give you about 52 seconds per question, which is faster than most students expect. For English, master the grammar rules (subject-verb agreement, comma usage, idiom). For Math, review your algebra II and trigonometry fundamentals. For Reading, practice identifying main ideas and inferring meaning quickly.