ACT Section Score Calculator

Enter your English, Math, Reading, and Science scores (1–36) to instantly calculate your ACT composite score, estimated percentile, section balance, and STEM average. Includes a radar chart showing your section score profile and college readiness benchmarks.

Created by Luis GonzalezLast updated: May 9, 2026

How to Use This Calculator

1
Enter your English section score
Input your raw or scaled score for the ACT English section, typically ranging from 1 to 36.
2
Enter your Math section score
Provide your score for the ACT Math section, also on a scale of 1 to 36.
3
Enter your Reading section score
Input your score for the ACT Reading section, from 1 to 36.
4
Enter your Science section score
Provide your score for the ACT Science section, ranging from 1 to 36.
5
Review your results
The calculator displays ACT Composite Score, Composite Percentile, Section Spread, Strongest Section, Weakest Section, and STEM Average.

Example Calculation

A high school student wants to understand their overall ACT performance, section consistency, and STEM strength after taking a practice test.

English

Math

Reading

Science

Results

ACT Composite Score

28 (Competitive)

Composite Percentile

88th percentile

Section Spread

4 pts (Mostly balanced)

Strongest Section

Math (30)

Weakest Section

Science (26)

STEM Average

28.0 (Strong)

Tips

Aim for Balance

While a high composite score is good, a smaller section spread (ideally under 5 points) often indicates stronger overall academic readiness to admissions committees.

Identify Weaknesses

A large spread, for example, 8 points between your highest and lowest section, clearly highlights areas needing focused study. Prioritize improving the lower-scoring sections for the greatest composite score impact.

Practice with Official Tests

Use full-length official ACT practice tests for the most accurate section score predictions, as these mirror the actual exam's timing and question types, unlike many third-party tests.

Understanding Your ACT Performance Metrics

The ACT Section Score Calculator provides immediate insight into your performance across the four core sections of the ACT: English, Math, Reading, and Science.

By inputting individual section scores, users can quickly determine their overall ACT Composite score, national percentile, the spread between highest and lowest section scores, their strongest and weakest sections, and a dedicated STEM average.

A typical competitive ACT Composite score for many universities falls between 24 and 28, making a balanced performance across sections highly desirable.

The Logic Behind Your ACT Composite and Spread

Calculating your ACT Composite score is a straightforward process: it is the average of your four individual section scores, rounded to the nearest whole number.

The section spread highlights the consistency of your performance across different subject areas.

ACT Composite     = round((English + Math + Reading + Science) / 4)
Section Spread    = max(English, Math, Reading, Science) − min(English, Math, Reading, Science)
Strongest Section = section with the highest score
Weakest Section   = section with the lowest score
STEM Average      = (Math + Science) / 2
Composite Percentile = ACT_PERCENTILES[composite]

💡 If you're considering how multiple ACT attempts could boost your overall score, our ACT Superscore Calculator can help you strategize by combining your best section scores.

Analyzing a Student's Practice ACT Results

A high school student received section scores of English: 27, Math: 30, Reading: 28, Science: 26.

ACT Composite Score: (27 + 30 + 28 + 26) / 4 = 111 / 4 = 27.75 → 28 — Competitive.
Composite Percentile: ACT_PERCENTILES[28] = 88th percentile
Section Spread: max(27,30,28,26) − min(27,30,28,26) = 30 − 26 = 4 pts — Mostly balanced.
Strongest Section: Math (30)
Weakest Section: Science (26)
STEM Average: (30 + 26) / 2 = 28.0 — Strong.

💡 If you're also taking the SAT, understanding how your top section scores combine is equally important. Our SAT Superscore Calculator can help you see your best potential SAT score.

Score Interpretation Context

The ACT Composite score and individual section scores hold significant weight in college admissions.

A composite score typically between 20 and 26 is considered competitive for many state universities, while more selective institutions frequently look for scores in the 28–36 range.

Beyond the composite, individual section scores can highlight specific academic strengths particularly relevant for specialized programs.

A student applying to an engineering program with a strong Math and Science score (e.g., 30+) might stand out even if English or Reading scores are slightly lower.

The STEM Average provides a quick summary of performance across the two most science-oriented sections.

Variants of This Formula and When to Use Them

While the standard ACT Composite calculation (the simple average of the four sections) is universally applied, there are nuanced variants in how scores are interpreted for strategic purposes.

One key variant is the ACT Superscore, calculated by taking the highest individual section scores from multiple ACT attempts:

Superscore = (Max English + Max Math + Max Reading + Max Science) / 4

For example, if a student takes the ACT twice: Attempt 1: English 25, Math 24, Reading 26, Science 23 Attempt 2: English 27, Math 25, Reading 24, Science 26

The standard composites are 25 and 26 respectively, but the Superscore would be (27 + 25 + 26 + 26) / 4 = 26.0.

This variant is used when colleges superscore the ACT, allowing students to present their peak performance across multiple testing dates.

Frequently Asked Questions

What is a good ACT Composite score for college admissions?

A 'good' ACT Composite score varies significantly by institution. For highly selective universities, scores typically range from 30–36, while many state universities consider scores between 24–28 to be competitive.

How is the ACT Composite score calculated?

The ACT Composite score is the average of your four section scores (English, Math, Reading, and Science), rounded to the nearest whole number. For example, an average of 27.75 rounds up to 28.

Why is the section score spread important?

The section spread indicates the consistency of your performance across different subjects. A smaller spread (e.g., 2–4 points) suggests well-rounded abilities, while a larger spread (e.g., 8–10 points) might signal a need for targeted study in weaker areas.

Can I take individual ACT sections to improve my score?

Starting in late 2020, the ACT introduced section retesting at specific centers, allowing students to retake one or more sections without repeating the entire exam. Check the official ACT website for current availability and policies.