ACT Score Calculator

Current Composite: average English, Math and Reading, then round to the nearest integer, with halves rounded up. This applies to the enhanced ACT introduced in April 2025 and all ACT tests from September 2025. Historical mode averages all four sections including Science. Select the rule used for your test; historical reports are not automatically recalculated.

Writing (2–12) does not affect Composite. Science is optional in current mode; when supplied, it is reported separately and used with Math for STEM.

STEM = ⌊(Math + Science) / 2 + 0.5⌋

ACT

ACT College Readiness Benchmarks

Each ACT section has a College Readiness Benchmark — the score linked to a strong chance of earning a B or C in the matching first-year college course. Meeting a benchmark suggests you are academically ready for college work in that subject.

ACT Composite Score Percentiles

Reference table for September 2025–August 2026 reports, based on ACT-tested graduates of 2023–2025. The percentage scored at or below this score. This is a dated comparison, not your official rank for another reporting year or an admission probability. Compare each college’s published score range and policies.

ACT to SAT Score Conversion

The official ACT–SAT concordance tables, published jointly by ACT and the College Board, let you compare scores across the two tests. A few common conversions:

What Counts as a Good ACT Score?

Reference table for September 2025–August 2026 reports, based on ACT-tested graduates of 2023–2025. The percentage scored at or below this score. This is a dated comparison, not your official rank for another reporting year or an admission probability. Compare each college’s published score range and policies.

How to Use This Calculator

1. Enter your section scores: Current Composite: average English, Math and Reading, then round to the nearest integer, with halves rounded up. This applies to the enhanced ACT introduced in April 2025 and all ACT tests from September 2025. Historical mode averages all four sections including Science. Select the rule used for your test; historical reports are not automatically recalculated. Writing (2–12) does not affect Composite. Science is optional in current mode; when supplied, it is reported separately and used with Math for STEM.
2. Add a Writing score (optional): If you took the essay, enter your 2–12 Writing score. It is shown separately and does not affect the composite.
3. Click Calculate: Current Composite: average English, Math and Reading, then round to the nearest integer, with halves rounded up. This applies to the enhanced ACT introduced in April 2025 and all ACT tests from September 2025. Historical mode averages all four sections including Science. Select the rule used for your test; historical reports are not automatically recalculated.
4. Review your results: See your composite on the rounding number-line, how many points reach the next composite, your percentile, section benchmarks, STEM score, and SAT equivalent.

Frequently Asked Questions

How is the ACT composite score calculated?

Current Composite: average English, Math and Reading, then round to the nearest integer, with halves rounded up. This applies to the enhanced ACT introduced in April 2025 and all ACT tests from September 2025. Historical mode averages all four sections including Science. Select the rule used for your test; historical reports are not automatically recalculated.

Does the Writing (essay) score affect my ACT composite?

Writing (2–12) does not affect Composite. Science is optional in current mode; when supplied, it is reported separately and used with Math for STEM.

What is a good ACT score?

Reference table for September 2025–August 2026 reports, based on ACT-tested graduates of 2023–2025. The percentage scored at or below this score. This is a dated comparison, not your official rank for another reporting year or an admission probability. Compare each college’s published score range and policies.

What is the STEM score on the ACT?

Writing (2–12) does not affect Composite. Science is optional in current mode; when supplied, it is reported separately and used with Math for STEM.

What are the ACT College Readiness Benchmarks?

They are the section scores associated with a strong chance of earning a B or C in the matching first-year college course: English 18, Math 22, Reading 22, and Science 23. Meeting a benchmark suggests you are academically ready for that subject in college.

How do I convert my ACT score to an SAT score?

Use the official ACT–SAT concordance tables published by ACT and the College Board. For example, an ACT composite of 24 is roughly equal to an SAT total of 1180, and a 30 is roughly equal to 1370. This calculator shows your concorded SAT total automatically.

Additional Resources

• ACT (test) - Wikipedia
• SAT - Wikipedia