ToolHuts

Practical tools for measured work

Test grade calculator

Calculate a percentage and letter grade with editable thresholds and extra-credit rules.

Calculate the layout, check the diagram, then print the result for the shop or jobsite.

%
%
%
%
Score90%
Letter gradeA
Points below full score2

How it works

Enter earned and possible points, then set the minimum percentages for A, B, C and D. The thresholds must strictly decrease and remain between 0% and 100%. Scores below D receive F.

Percent = earned points / possible points × 100

18 points out of 20 gives 90%. With A starting at 90%, the result is A; if A starts at 93% and B at 85%, the same score is B. Extra credit above the possible points requires the explicit extra-credit option.

Current-input example

The result above uses these exact values. This snapshot is included when the page is printed so the output can be checked against the original measurements.

Points earned
18
Points possible
20
Allow extra credit
No
Minimum percent for A
90 %
Minimum percent for B
80 %
Minimum percent for C
70 %
Minimum percent for D
60 %

Primary result: Score: 90 %.

Before using the result

  • Check the selected mode, units and input values before using the result.
  • Read the assumptions and rounding rules; compare the worked example with your intended calculation.
  • A numerical result does not supply missing context or change the stated limitations.

Limitations

Defaults are examples, not a universal school policy. Plus/minus grades, weighted assignments, dropped scores, rounding rules and pass/fail policies are not inferred. Apply your institution’s actual thresholds.

Letter grades use the unrounded percentage; the displayed percentage is rounded to six decimal places.

Frequently asked questions

Can I enter correct answers instead of points?

Yes, when every question has equal weight: use the number correct as points earned and the number of questions as points possible. Otherwise total the actual points.