Easy Grader Calculator
Enter total questions and wrong answers to get percent and letter grade, then print the full grading chart — strict, standard and lenient scales.
| Wrong | Right | Score | Grade |
|---|
The cardboard slider, without the cardboard
This is the classroom EZ-Grader rebuilt for a browser: type the number of questions on the test, and the full chart appears — every possible wrong-answer count with the matching score and letter grade. Type a student’s wrong count on top and the matching row lights up, so you can grade a stack of quizzes without touching a calculator.
The math is one line: score = (total − wrong) ÷ total × 100. For a 25-question quiz each miss costs 4 points; for a 50-question test, 2 points. The chart does that division 200 ways so you don’t have to.
Pick the scale your syllabus actually uses
Letter grades aren’t universal — the same 75% is a C on one campus and a D+ on another. The scale selector covers the three families teachers actually meet:
| Scale | A starts | Passing | Where you’ll see it |
|---|---|---|---|
| Standard (10-pt) | 90% | 60% | Most US schools; the default |
| Strict (7-pt) | 93% | 70% | Stricter districts, some magnet programs |
| Lenient | 85% | 50% | Standards-based and generous systems |
The letter grade scales page prints every threshold, including the +/− rungs. Percentages are rounded to one decimal before the letter is picked, so the number on screen is always the number that was graded.
Half-points, GPA and the printed page
Tick half-point deductions for questions scored in halves (partial credit, two-part items): the chart doubles to one row per half point and the lookup accepts values like 7.5. The GPA column adds the standard unweighted 4.0 points next to each letter (A/A+ = 4.0, B = 3.0, F = 0) — handy when the gradebook wants points, not letters.
The chart is built to be printed: Print chart produces a clean one-column table with the question count and scale labeled at the top — the modern equivalent of the cardboard slide chart taped to the desk. Download CSV drops the same table into a spreadsheet for record-keeping or mail-merge grade slips.
More for teachers
- Letter grade scales explained — where A–F came from, why there’s no E, and every threshold on all three scales.
- How to curve a test fairly — five curving methods with the math worked out, and which ones to avoid.
- Weighted grading vs points — what “tests are 40% of the grade” does to the math, with worked examples.
Letter Grade Scales Explained
Why 90% is an A in one district and a B+ in another — every threshold on all three scales, printed.
Open →How to Curve a Test Fairly
The class average came back at 58%. Here are five curves, the math for each, and when each one is fair.
Open →Weighted Grading vs Points — What's the Difference?
Tests 40%, homework 20% — or just total points? Same student, two systems, two different grades.
Open →Frequently asked questions
What grade is 7 out of 10?
7 right out of 10 is 70%. On the standard scale that's a C-; on the strict 7-point scale it's a D-; on the lenient scale it's a C. The letter depends on the scale your school uses — switch scales above to compare.
How do I grade questions worth half a point?
Tick the half-point deductions box. The wrong-answer input then accepts .5 values (like 3.5 for three fully wrong plus two half deductions), and the chart doubles its rows so every half-step gets its own line.
Which grading scale should I use?
Whatever your syllabus says — the scale is a policy, not a fact. Standard (A starts at 90, pass at 60) is the most common in US schools. Strict (A at 93, pass at 70) is the older 7-point scale some districts still use. Lenient (A at 85, pass at 50) fits standards-based or generous systems. All three are printed side by side on the letter grade scales page.
Is there a maximum number of questions?
The chart goes up to 200 questions — far past a typical quiz. Longer exams (like a 400-question practice test) are best graded per section anyway, since students usually need a score per section.
How do I get a physical copy for my desk?
Set the question count and options, then click Print chart. The printout shows only the table with its scale label — no navigation or buttons. Download CSV saves the same table for a spreadsheet or gradebook.
Does this site store my students' scores?
No. Everything runs in your browser — no accounts, no uploads, nothing is sent anywhere. You can load the page, go offline, and keep grading.
Latest articles
How to Curve a Test Fairly
The class average came back at 58%. Here are five curves, the math for each, and when each one is fair.
Letter Grade Scales Explained
Why 90% is an A in one district and a B+ in another — every threshold on all three scales, printed.
Weighted Grading vs Points — What's the Difference?
Tests 40%, homework 20% — or just total points? Same student, two systems, two different grades.