ACT Score Calculator
ACT composite from 3 or 4 section scores with halves up rounding.
What it does
ACT math is simple once section scores exist: average and round. Confusion comes from the science change, where current reports drop science from the composite while older score tables keep it. Picking the mode first keeps practice tests honest.
The tool above averages reported 1 to 36 sections. English 24 with math 26 and reading 22 sums to 72 points, and 72 divided by 3 is exactly 24. A legacy check with 24, 22, 20, and 20 sums to 86, which divided by 4 is 21.5 and rounds to 22.
Rounding follows the official halves up rule. Three integer sections can never land exactly on a half, so current composites round cleanly. Four section legacy averages can land on halves, and those round up.
Section scores themselves come from raw to scale tables that differ by test form. This tool starts after that step, so enter the 1 to 36 numbers from the score report or the practice conversion table.
How to use
- Pick current (3 tests) or legacy (4 tests).
- Enter English 1 to 36.
- Enter math 1 to 36.
- Enter reading 1 to 36.
- Enter science for legacy mode.
- Read composite, points, and section count.
Formula
- E
- English section score 1 to 36.
- M
- Math section score 1 to 36.
- R
- Reading section score 1 to 36.
- S
- Science score 1 to 36, legacy mode only.
ACT composites average section scores on the 1 to 36 scale with standard rounding, halves up. Current reporting averages English, math, and reading; legacy reporting adds science as a fourth test. Exact halves cannot arise from three integer sections, while four section averages can land on halves and round up.
Worked example
Example: 24, 26, 22
Defaults: current mode with English 24, math 26, reading 22. These are also the default values, so the page opens on this answer.
- Sections: English 24, math 26, reading 22.
- Add: 24 + 26 + 22 = 72 points.
- Divide: 72 / 3 = 24.0.
- Round: 24 stays 24.
- Tool shows composite 24 with 72 points over 3 sections.
- Legacy check: 24, 22, 20, 20 sum to 86, and 86 / 4 = 21.5 rounds to 22.
Reference table
| Sections | Math | Composite |
|---|---|---|
| 24, 26, 22 | 72 / 3 | 24 |
| 30, 28, 32 | 90 / 3 | 30 |
| 18, 20, 19 | 57 / 3 | 19 |
| 24, 22, 20, 20 legacy | 86 / 4 | 22 |
Limits
- Averages reported scores; no raw to scale step.
- Concordance to SAT varies by year.
- Writing score stays separate.
- Practice scales differ by form.
Common mistakes
- Averaging raw counts instead of scales.
- Adding science in current mode.
- Rounding halves down.
- Expecting decimals in composites.
- Mixing forms across practice tests.
Try it yourself
Quick checks. Answers sit tucked under each question.
28, 30, 26 current?
84 / 3 = 28.
Legacy 20, 20, 20, 20?
80 / 4 = 20.
Questions
How is the composite found?
Average the sections and round halves up. Here (24 + 26 + 22) / 3 = 24.
Which tests count now?
English, math, and reading since the 2025 update; science moved to an optional section.
What is legacy scoring?
English, math, reading, and science averaged over four, the pre 2025 rule.
What is the score range?
Each section reports 1 to 36 and the composite reports 1 to 36.
How does rounding work?
Fractions below one half round down and one half or more round up on the official rule.
Does it score raw answers?
No. Raw counts convert to 1 to 36 scales first; this tool averages reported section scores.