GED Score Calculator: How to Estimate Your Score

The GED score calculator helps you estimate your GED test score based on the number of questions you answered correctly. You enter the number of correct answers for each of the four GED subjects (Mathematical Reasoning, Reasoning Through Language Arts, Science, and Social Studies), and the calculator gives you an estimated scaled score for each subject and a combined total. This tool is useful for practice tests and for understanding how raw scores translate to the official GED scoring scale.

Formula

The GED scoring system uses a scaled score, not a simple percentage. The official GED test is scored on a scale of 100 to 200 per subject, with a passing score of 145 per subject. The formula used in this calculator is a simplified linear approximation that estimates the scaled score based on the number of correct answers (raw score). For each subject, the estimated score is calculated as:

Estimated Score = 150 + (Raw Score – Baseline) × 2

Where:

• Raw Score = number of correct answers (out of the total questions on the test).
• Baseline = a reference raw score that roughly corresponds to a scaled score of 150 (the average score). For Math, the baseline is 25; for RLA, 30; for Science, 25; for Social Studies, 28.
• 2 = a scaling factor that converts each additional correct answer into 2 points on the scaled score.

This is a rough estimate; the actual GED scoring is more complex and varies by test form and equating.

Worked Example

Using the default values from the calculator (Math: 30, RLA: 35, Science: 28, Social Studies: 32):

1. Math: Estimated Score = 150 + (30 – 25) × 2 = 150 + 10 = 160
2. RLA: Estimated Score = 150 + (35 – 30) × 2 = 150 + 10 = 160
3. Science: Estimated Score = 150 + (28 – 25) × 2 = 150 + 6 = 156
4. Social Studies: Estimated Score = 150 + (32 – 28) × 2 = 150 + 8 = 158
5. Total: 160 + 160 + 156 + 158 = 634

The calculator shows the same results: Math 160, RLA 160, Science 156, Social Studies 158, and a total of 634.

Understanding GED Scoring

The GED test is scored on a scale of 100 to 200 for each subject. To pass, you need a minimum score of 145 on each subject. Scores above 175 are considered “College Ready,” and scores above 178 (on some tests) may earn college credit. The total score is the sum of the four subject scores, with a maximum of 800. The official GED scoring uses a statistical process called “equating” to ensure that scores are comparable across different test versions. This means the raw score needed to achieve a 145 can vary slightly from one test form to another.

How to Use This Calculator

To use this calculator, you need to know the number of correct answers you got on a GED practice test or a real GED test (if you have your raw score). Enter the number of correct answers for each subject in the input fields. The calculator will output an estimated scaled score for each subject and a total. This estimate can help you gauge whether you are likely to pass each section. However, remember that this is an approximation—the official score may differ due to equating and the specific difficulty of the test form.

Common Mistakes and Limitations

One common mistake is assuming that the raw score is the percentage of correct answers. For example, if you get 30 out of 40 questions correct, that’s 75%, but your scaled score is not 75—it’s higher (in our example, 160). Another mistake is ignoring the fact that the GED includes multiple-choice, fill-in-the-blank, and essay questions (in RLA). The essay is scored separately and affects the RLA score, but this calculator treats all questions equally. Also, the GED test has a variable number of questions per subject (typically 40-50), and the baseline values used here are approximate. The actual score conversion can be more or less steep depending on the test form.

Tips for Using Your Estimated Score

If your estimated score is below 145 for any subject, you should focus on improving that area before taking the official test. Use the estimate to identify weak subjects. For example, if your Math estimate is 140, you need to improve by about 3 correct answers to reach 145 (since each correct answer adds 2 points). However, this is a rough guide—the actual improvement needed could be different. If your estimated scores are above 175, you may be ready for college-level coursework. Remember that the GED test is computer-based, and you can take each subject separately, so you can retake only the subjects you fail.

Frequently Asked Questions

What is a passing GED score?

A passing score on each GED subject is 145 out of 200. You must pass all four subjects to earn your GED credential. Scores of 165-174 are considered “GED College Ready,” and scores of 175+ may earn college credit or waive placement tests.

Can I use this calculator for official GED scores?

No, this calculator is only an estimate. Official scores are determined by GED Testing Service using a complex equating process. You should use this calculator for practice tests or to get a rough idea of your performance, but always rely on your official score report for actual results.

How many questions are on each GED subject test?

The number of questions varies by subject and test form. Typically, Mathematical Reasoning has about 46 questions, Reasoning Through Language Arts has about 51 questions (including an essay), Science has about 40 questions, and Social Studies has about 35 questions. However, some questions are not scored (they are being field-tested for future tests).

What is the maximum GED score?

The maximum score per subject is 200, so the maximum total score is 800. A total score of 580 (145×4) is the minimum passing total, but you must pass each subject individually.

How is the RLA essay scored?

The RLA essay (extended response) is scored by a computer and human raters on a scale of 0-6. The essay score is combined with the multiple-choice section to produce the final RLA scaled score. This calculator does not account for the essay separately, so your RLA estimate may be less accurate.

Does the GED score expire?

GED scores do not expire in most states, but some colleges and employers may require recent scores. Check with the institution you are applying to for their policy. The GED credential itself does not expire.

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in math_correct | Math correct answers | - | 30 | 0
in rla_correct | RLA correct answers | - | 35 | 0
in sci_correct | Science correct answers | - | 28 | 0
in ss_correct | Social Studies correct answers | - | 32 | 0
out math_score | Estimated Math score | - | 150 + (math_correct - 25) * 2 | 0
out rla_score | Estimated RLA score | - | 150 + (rla_correct - 30) * 2 | 0
out sci_score | Estimated Science score | - | 150 + (sci_correct - 25) * 2 | 0
out ss_score | Estimated Social Studies score | - | 150 + (ss_correct - 28) * 2 | 0
out total_score | Estimated Total score | - | math_score + rla_score + sci_score + ss_score | 0