T TutoringPlatforms

Free tool · For students & parents

Test grade calculator

The classic "easy grader": set the number of questions, mark how many were wrong (or right), and read off the percentage and letter grade — plus a full chart for grading a whole stack of papers.

Score

—

Letter grade

—

Grading chart (for the whole stack of papers)

WrongRightScoreGrade

A one-second grader for tests and quizzes

Whether you're a teacher grading thirty quizzes, a tutor marking practice tests, or a student checking your own score, the math is always the same — but doing "17 out of 23" in your head thirty times invites mistakes. This tool does the division and letter-mapping instantly, and the chart below the result shows every possible score for your test length so you can grade a whole pile without touching the keyboard again.

Partial credit works too: the "wrong" box accepts decimals, so a student who lost 2.5 points on a 20-question quiz scores 87.5%.

How the numbers are worked out

  • Percentage = (questions − wrong) ÷ questions × 100, rounded to one decimal.
  • The default letter scale is the most common US one: A 90–100%, B 80–89%, C 70–79%, D 60–69%, F below 60%, with +/− bands at the thirds of each range.
  • Grading scales vary by school and country — the letter is a convention, the percentage is the fact.

Frequently asked questions

What grade is 17 out of 23?

17 ÷ 23 = 73.9%, which is a C on the most common US scale (70–79% = C). The calculator handles any combination instantly, including decimals for partial credit.

What percentage is an A?

On the most common US scale, an A is 90% and above (A− from 90%, solid A from 93%, A+ from 97%). Some schools set the A bar at 93% and some universities use entirely different bands, so check the syllabus if it matters.

Can I use this with partial credit?

Yes — enter the points lost as a decimal in the "wrong" field. For example, 3.5 points lost on a 25-question test gives (25 − 3.5) ÷ 25 = 86%.

Is a 60% a pass?

In most US schools, 60–69% is a D — technically passing but below the C threshold that many programs, scholarships and college-prep tracks require. In other countries the pass mark differs widely (40% in much of the UK, 50% in Australia), so local convention rules.

My child's test scores are slipping — when should we get help?

A one-off bad test is noise; two or three in the same subject is a trend worth acting on early, because catching up costs less effort than it will a term later. Subject tutors on the platforms in our directory typically run $20–60 per hour online, and many offer trial lessons.