You open your grade portal and see a 70. Is that passing? In most U.S. classes, yes: a 70% is usually a C− on a plus/minus scale or a C on a simple ten-point scale, and the cutoff for failing is usually lower. But "passing the class" and "good enough for what you need" are not always the same thing, and a few grading scales treat 70 very differently.
This guide explains what a 70 means on the most common scales, when a 70 might not be enough, how much room you have above failing, and how to work out what you need to stay at or above 70.
Your syllabus is always the final word. Teachers and schools set their own cutoffs, so check yours before relying on any chart.
The short answer
On the common U.S. plus/minus scale (the one GradeCalc Lab uses):
| Letter | Percent | GPA (4.0 scale) |
|---|---|---|
| C | 73–76% | 2.0 |
| C− | 70–72% | 1.7 |
| D+ | 67–69% | 1.3 |
| D | 63–66% | 1.0 |
| D− | 60–62% | 0.7 |
| F | Below 60% | 0.0 |
So on this scale a 70 is a C−, the lowest grade in the C range. The usual failing line is below 60%, which means a 70 sits about ten points above failing. If your school does not use plus and minus grades, a 70 is a plain C (70–79%) worth 2.0 grade points. The full chart from A+ to F is on our letter grade scale page.
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Open the free grade calculator →When a 70 is a D
Not every school uses ten-point bands. Some schools use a seven-point scale, where each letter covers fewer percentage points. One version looks like this:
| Letter | Percent |
|---|---|
| A | 93–100% |
| B | 85–92% |
| C | 77–84% |
| D | 70–76% |
| F | Below 70% |
On a scale like that, a 70 is a D, and it is the very lowest passing score. A 69 would be an F. Other schools and individual teachers use their own cutoffs, so the same 70 can mean a comfortable C in one class and a borderline D in another. The only way to know is to check the grading scale in your syllabus or student handbook.
When a 70 passes but is not enough
Even when a 70 counts as passing, it may not meet every requirement. Common situations:
- "C or better" requirements. Some prerequisites and major courses require at least a C. On a plus/minus scale, a 70 is a C−, and some schools do not count a C− as "C or better." In that case you would need 73% for a C. Check whether your program's rule says "C" or "C−."
- Higher minimums in some programs. Some courses or programs set their own minimum passing score above the school's usual line. Your program handbook will say so.
- Pass/fail courses. If you take a class pass/fail, your school's policy decides which letter counts as a pass. It might be a D−, a C− or a C.
- GPA requirements. A C− is worth 1.7 grade points on most 4.0 scales, which is below a 2.0 average. If you need to keep a minimum GPA for a scholarship, team or program, several 70s can pull you under it.
A 70 on one test vs a 70 in the class
A 70 on a single test is not your final grade. How much it matters depends on its weight. Suppose your class is weighted like this:
- Homework 20%, quizzes 30%, tests 50%
- Your averages: homework 90%, quizzes 75%, tests 60%
Your overall grade is a weighted average:
- 90 × 0.20 = 18.0
- 75 × 0.30 = 22.5
- 60 × 0.50 = 30.0
- Total = 18.0 + 22.5 + 30.0 = 70.5%
Even with a 60 test average, strong homework kept the class grade at 70.5%. For more practice, see how to calculate a weighted grade.
If your class uses points instead of weights, divide points earned by points possible. For example, 350 points out of 500 is 350 ÷ 500 = 0.70 = 70%.