Interactive Prep Tool
Official ACT Score & Superscore Calculator
Calculate your ACT composite score, examine official rounding thresholds, and calculate how superscoring your best section attempts raises your composite.
How the ACT Composite Score is Rounded
The official ACT composite is calculated by adding your English, Math, Reading, and Science scaled scores together and dividing by 4.
The ACT uses standard mathematical rounding at the 0.5 threshold:
- If your average ends in .00, your composite is that integer. (e.g., 28.00 = 28)
- If your average ends in .25, it rounds down. (e.g., 28.25 = 28)
- If your average ends in .50, it rounds up. (e.g., 28.50 = 29)
- If your average ends in .75, it rounds up. (e.g., 28.75 = 29)
Key Takeaway: Gaining just 1 raw point in any single section that moves your unrounded average from 28.25 to 28.50 instantly awards a full composite point increase to 29!
| ACT Score | National Percentile | Equivalent SAT Range | Admissions Competitiveness Tier |
|---|---|---|---|
| 35–36 | 99th+ Percentile | 1530–1600 | Ivy League, Stanford, MIT, Caltech |
| 33–34 | 98th–99th Percentile | 1450–1520 | Top 25 National Universities (Georgetown, NYU, Tufts) |
| 30–32 | 93rd–97th Percentile | 1360–1440 | Selective State Flagships (Michigan, UVA, UNC, Florida) |
| 26–29 | 82nd–90th Percentile | 1230–1350 | Nationally Competitive Universities |
| 21–25 | 58th–78th Percentile | 1060–1220 | National Median to Above Average |
How ACT Superscoring Works
In fall 2020, ACT officially introduced automated superscoring. When students request an official superscore report, ACT automatically averages the highest English, Math, Reading, and Science scores from any test taken within the eligible window.
Because students often study for one section at a time between sittings, ACT superscores average 1 to 2 composite points higher than a student's best single test day.
Frequently Asked Questions About ACT Scores
How does official ACT composite score rounding work?
Your ACT composite score is the unweighted average of the four required sections: English, Math, Reading, and Science (each scored 1–36). The average is rounded to the nearest whole integer. An average of 27.5 rounds up to 28, while 27.25 rounds down to 27, and 27.75 rounds up to 28.
How is an official ACT superscore calculated?
The ACT calculates an official superscore by taking your highest section score for English, Math, Reading, and Science across all eligible test dates, summing them, and dividing by 4 (applying the standard 0.5 rounding rule). Many universities accept official ACT superscore reports.
Do colleges see all my previous test scores when I superscore the ACT?
When you send an official ACT superscore report, colleges receive your calculated superscore alongside the complete test date scores from the sittings that contributed to your superscore. They do not receive scores from dates that did not contribute to your highest sections.
What is considered a good ACT score for competitive universities?
The national average ACT composite score is approximately 20 to 21. Scores of 28 to 30 place you in the top 10% nationwide (competitive for selective state flagships), while scores of 33 to 36 place you in the top 1% to 2% (in-range for Ivy League and top-20 colleges).
Ready to boost your ACT composite?
Master the pacing and question traps that differentiate a 28 from a 34 with deliberate, timed practice.