ACT® Composite Score Calculator
Enter your 1 to 36 section scores. Your Composite and STEM scores update as you type.
Rules ACT® scoring keys and score guide, read Nov 12, 2026STEM rounding our assumption
Method and sources
Only published ACT® scoring rules; nothing is estimated except STEM rounding.
- CompositeThe average of English, Math and Reading, rounded: a fraction under one-half goes down, one-half or more goes up. Science is not in it. No Composite if a section was left blank. ACT® Practice Test 1 scoring key, “Calculating a Composite Score”PDF of Jul 20, 2026, read Nov 12, 2026
- STEMThe average of Math and Science. The rounding isn’t stated; we use the Composite rule (our assumption). Understanding your scores, ACT Education Corp.read Nov 12, 2026
- Writing 2-12Four domain scores of 1 to 6, each doubled, added up and divided by 4, rounded half up. ACT® 2026-27 special testing scoring key, page 8PDF of Jul 16, 2026, read Nov 12, 2026
- Not offeredA scorer that turns your practice-test answers (raw score) into 1 to 36 section scores. ACT Education Corp.’s terms don’t allow its conversion tables on other sites without written permission, so we don’t copy them. Each free ACT® practice test comes with its own scoring key. Free ACT® test prep, ACT Education Corp.read Nov 12, 2026
ACT® score questions
facts checked on Nov 12, 2026
How is the ACT® Composite worked out?
Add your English, Math and Reading scale scores, divide by 3 and round: under one-half down, one-half or more up. Science and Writing are reported separately.
Is science part of the ACT® Composite?
No. On the enhanced ACT® the Composite averages English, Math and Reading only. Science counts in the STEM score, together with Math.
Can I turn my practice test answers into scores here?
Not yet on this site. Use the scoring key that comes with each free ACT® practice test to get your section scores, then enter them above.
Can I save these scores?
Yes. Copy link gives you a link that holds them. Nothing is stored on our side.