Test Score Estimator (GMAT/GRE Style)

Math Updated 16 Jun 2026

Test Score Estimator (GMAT/GRE Style) is a mathematics calculator that helps you calculate academic scores or grade equivalents. The formula used is: Raw Score = Correct ÷ Total × 100\nScaled Score = Accuracy × Difficulty × 800\nPercentile estimated from accuracy band. Ensure all inputs share the same unit system (e.g. all metres or all feet) unless the formula converts between units.

Formula

Raw Score = Correct ÷ Total × 100 Scaled Score = Accuracy × Difficulty × 800 Percentile estimated from accuracy band

Example Calculation

Inputs
  • Correct Answers: 45
  • Total Questions: 60
  • Difficulty Multiplier (1.0–1.5): 1.2
  • Target Score (out of 800): 700

Suppose you enter: Correct Answers = 45, Total Questions = 60, Difficulty Multiplier (1.0–1.5) = 1.2, Target Score (out of 800) = 700. The calculator applies the formula (Raw Score = Correct ÷ Total × 100\nScaled Score = Accuracy × Difficulty × 800\nPercentile estimated from accuracy band) and shows all output values below. Change any input field to immediately see how the result changes.

Frequently asked questions

What is the Test Score Estimator (GMAT/GRE Style)?
The Test Score Estimator (GMAT/GRE Style) is a mathematics calculator that helps you calculate academic scores or grade equivalents. Ensure all inputs share the same unit system (e.g. all metres or all feet) unless the formula converts between units.
When should I use this calculator?
Use this calculator whenever you need a quick, accurate result for academic scores or grade equivalents without working through the arithmetic manually.
What units should I enter?
Ensure all inputs share the same unit system (e.g. all metres or all feet) unless the formula converts between units.
How accurate are the results?
Results are mathematically exact given the formula and your inputs. Rounding to decimal places may introduce small display differences.
How do I interpret the result?
Check that all inputs are in the valid range for the formula. Some operations (e.g. square root, division) require non-negative or non-zero values.
How can I verify the calculation manually?
Use the displayed formula and work through the numbers step by step. If your manual result differs slightly, check rounding and unit conversions first.
Can I use this for planning and budgeting?
Yes. Run best-case, expected, and worst-case inputs to compare outcomes and make safer planning decisions.