Calculate your estimated ACT composite score based on your performance in each section.
Your Estimated ACT Composite Score:
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Understanding the ACT Composite Score
The ACT is a standardized test widely used for college admissions in the United States. It assesses a student's general educational development and ability to succeed in college. The ACT is composed of four multiple-choice sections: English, Mathematics, Reading, and Science Reasoning, plus an optional Writing Test.
How the ACT Composite Score is Calculated
The ACT Composite Score is the average of the scores from the four multiple-choice sections (English, Math, Reading, and Science Reasoning). Each of these four sections is scored on a scale of 1 to 36. The process is as follows:
Raw Score to Scale Score Conversion: For each section, your raw score (the number of questions you answer correctly) is converted into a scale score from 1 to 36 using a state-specific or national test form "concordance" table. These tables can vary slightly from year to year and test form to test form to ensure consistent scoring standards.
Averaging the Scale Scores: Once you have your scale score for each of the four sections (English, Math, Reading, Science Reasoning), these four scores are added together.
Final Composite Score: The sum of the four scale scores is then divided by 4. The result is rounded to the nearest whole number. For example, if the sum is 105, the composite score is 26 (105 / 4 = 26.25, rounded down). If the sum is 106, the composite score is 27 (106 / 4 = 26.5, rounded up).
What This Calculator Does
This calculator simplifies that process. You input your estimated or actual scale score for each of the four ACT sections. The calculator then sums these scores and divides by four, rounding the result to the nearest whole number to provide your ACT Composite Score. This tool is particularly useful for:
Practice Test Analysis: Estimating your composite score after taking a practice test.
Target Setting: Understanding how scores in individual sections contribute to your overall target composite score.
Score Projection: Getting a quick idea of your potential composite score if you achieve certain scores in each subject area.
Note: This calculator provides an estimate based on the standard averaging method. Actual ACT scores are determined by the official scoring tables provided by ACT, Inc., which may involve slight variations. The optional Writing Test score is reported separately and does not affect the Composite Score.
function calculateActScore() {
var englishScore = parseFloat(document.getElementById("englishScore").value);
var mathScore = parseFloat(document.getElementById("mathScore").value);
var readingScore = parseFloat(document.getElementById("readingScore").value);
var scienceScore = parseFloat(document.getElementById("scienceScore").value);
var resultDiv = document.getElementById("result");
var resultScoreDiv = document.getElementById("result-score");
// Input validation
if (isNaN(englishScore) || englishScore 36 ||
isNaN(mathScore) || mathScore 36 ||
isNaN(readingScore) || readingScore 36 ||
isNaN(scienceScore) || scienceScore 36) {
alert("Please enter valid scores between 1 and 36 for each section.");
resultDiv.style.display = "none";
return;
}
var totalScore = englishScore + mathScore + readingScore + scienceScore;
var compositeScore = totalScore / 4;
// Round to the nearest whole number
var roundedCompositeScore = Math.round(compositeScore);
resultScoreDiv.textContent = roundedCompositeScore;
resultDiv.style.display = "block";
}