Education & study

Custom grade boundary checker

Map a percentage to a grading scale that you define.

Custom grade boundary checker
Esc to restore

Your inputs

Use the example headings. UTF-8 CSV and TSV files stay on this device; maximum 25 MB.

Up to 25 MB per file, 50,000 data rows, 200 columns and 2 million data cells. Fully blank rows and columns are ignored before row, column and cell limits are checked. Individual tools may have smaller result or chart limits.

Results update as you type. Larger files run when you press Update result.

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Your result

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Your result will appear here.

Your inputs stay in this browser. Nothing is uploaded or saved.

A clear answer. Here’s how.

Chooses the grade with the largest inclusive minimum no greater than the score. Boundaries must start at 0, strictly increase and remain at or below 100. Uses only your supplied labels and thresholds; no official school, exam board or country scale is claimed.

See a worked example

Worked example

A fixed demonstration, separate from the values you enter above.

Score (%)
76
CSV: Minimum,Grade
Minimum,Grade
0,F
50,D
60,C
70,B
80,A

Example result

Grade under your supplied scale
B
Score
76%

Keep going.

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