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Built for teachers

Turn a stack of tests into grades —in one tap.

The friendly EZ grader that does the math for you. Enter the misses, set the total, and read the percentage and letter grade instantly — free, with no login.

Grade a test
Count by
Grading scale

Result · live

Grade B

22 correct3 wrong

Great work — a solid result.

Grading a stack?

88 percent, grade B. 22 of 25 correct.

Grading a whole class, not one test?Save your classes, assignments, and scales in the free gradebook — kept in your browser, no login.Open the gradebook →Think in test scores, not misses?The test grade calculator frames the same instant grading by question count.Open the test calculator →

As easy as 1-2-3

  1. Step 1

    Enter the misses

    Tap how many questions the student got wrong — or type it straight in.

  2. Step 2

    Set the total

    Tell us how many questions were on the test. The score updates as you go.

  3. Step 3

    Read the grade

    See the percentage and color-coded letter grade instantly. No Calculate button.

Questions teachers ask

How does the EZ grade calculator work?

Enter how many questions a student missed and the total number of questions. Gradejar instantly turns that into a percentage and a letter grade using your chosen scale — the result updates live as you type, with no Calculate button to press.

What grading scale does it use?

It defaults to the standard US 10-point scale (A 90–100, B 80–89, C 70–79, D 60–69, F below 60). You can switch to a plus/minus scale with one tap, or pick “Custom” and set your own percentage cutoffs for each letter — the score and chart update instantly.

Is Gradejar free to use?

Yes. The EZ grader is completely free — no account, no signup, and no login required. Just open the page and start grading.

Can I grade a whole stack of tests quickly?

Yes — that is what Gradejar is built for. Keep the question total fixed, tap “+1 wrong” (or press the W key) for each miss to watch the grade update live, then hit “Next test” (or press N) to reset to zero and grade the next paper. A running count shows how many tests you have graded this session.

Does it save my classes and rosters?

The single-test grader is instant and saves nothing automatically. To keep your work, open the Gradejar gradebook: it saves your classes, assignments, scores, and grading scales privately in your own browser — no account, no login, no server. It is the one thing every other free EZ grader can’t do.

Can I see the full grade chart for a test?

Yes. Open “Show the full grade chart” to see every possible number wrong, its percentage, and its letter grade for your test size — the classic EZ-grader table, color-coded and with your current score highlighted.