Percentage CalculatorYTScript

Grade Percentage Calculator

Turn a test score and a point total into a percentage.

Runs in your browser — numbers never leave this device

One common US letter scale (not official)

LetterRange
A90–100%
B80–89%
C70–79%
D60–69%
Fbelow 60%

This mapping is a common example in the United States. It is not your school’s official standard, and other scales are widely used.

Enter two numbers

Pick a question and fill both fields — the answer appears as you type.

How to use it

  1. 1

    Enter points scored and the total points possible.

  2. 2

    Read the percentage. If you show the letter table, treat it as an example scale only.

  3. 3

    This page does not weight assignments, estimate a final exam, or compute a GPA or a percentile.

A grade percentage is points scored over points possible

The percentage is (score / maximum) × 100. A 17 out of 20 is 85%. If the maximum is zero, the percentage is not defined. This is a plain ratio, not a percentile: a percentile would tell you how a score ranks among other scores, which this page does not do.

The letter-grade table below is one common United States mapping (A 90–100, B 80–89, C 70–79, D 60–69, F below 60). Schools use many other scales, including plus/minus cuts and passing marks that differ by course. The table is not official for any institution.

Other percentage tools

Percentage calculatorFind a percent of a number, or what percent one number is of another.Percentage increaseHow much a number rose, or add a percent to a value.Percentage decreaseHow much a number fell, or reduce a value by a percent.Percentage differenceHow far two numbers sit from their average.DiscountSale price, amount saved, or the original price.TipTip amount, total to pay, and an optional split.FractionConvert fractions, decimals, and percentages.

Frequently asked questions

How is 17 out of 20 calculated?

Divide 17 by 20 and multiply by 100. The result is 85%.

Does this weight assignments or compute a GPA?

No. It only converts a score and a maximum into a percentage. Weighted term grades, “what I need on the final,” and GPA are not included in this version.

Is a grade percentage the same as a percentile?

No. A percentage is your points out of the total. A percentile is a rank against other people. This calculator does not compute percentiles.

Can I trust the letter grade it shows?

Only as an illustration of one common US scale. Your syllabus or exam board is the authority, and many classes use different cut-offs.

What if the total is zero?

The percentage is not defined. The page says that instead of showing Infinity.