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Test Grade Calculator

Turn equal-weight question counts into a percentage and a grade on your entered scale.

Your numbers

Make it your own
Updates as you type
Correct answers
87.5%

Calculated from your inputs · rounded for display

Grade on your scaleB
Correct answers35
Incorrect answers5

Equal-weight questions, no partial credit or penalties. The entered grading scale is illustrative and should match your school.

Your calculation, step by step

No black boxes
  1. Correct = 40 − 5 = 35.
  2. Score = 35 ÷ 40 × 100 = 87.5%.
  3. Select the highest entered grade threshold met by the unrounded percentage.

How to use this calculator

  1. Enter your own values in the labeled fields. Check the units and assumptions before comparing results. Only the fields needed for your selected calculation mode are shown.
  2. Your answer updates automatically. Review the calculation steps to see exactly how it was calculated.
  3. Copy, share, save, or download your result. Saved inputs stay on this device.

How the calculation works

Percentage = (total questions − incorrect answers) / total × 100

This tool assumes every question has the same weight and an answer is either correct or incorrect. The grade is the highest entered threshold met by the unrounded percentage. Replace the sample grade bands with your own school’s scale. Partial credit and negative marking require a different scoring model.

A worked example

35 correct answers out of 40 gives 87.5%. On the sample scale, that is B.

Reading your result

Use the main result together with its units and supporting figures. Display values are rounded; calculations keep their underlying precision. A change in inputs or assumptions can change the answer. Compare the step-by-step working with your intended use before relying on an estimate.

Frequently asked questions

Does the sample scale apply everywhere?

No. Edit the grade bands to match your institution.

Can I use partial credit?

Not in this question-count model. Use Weighted Average for weighted numeric scores.

Sources & methodology

This calculator uses the mathematical identity and assumptions stated above. No current rates, prices, or external data are loaded. Conversion tools use international unit definitions.

Formula review: October 24, 2026. Read our methodology.