TeacherHome / Tools / Grade Needed Calculator
Grade Needed Calculator
The score you need on your next test or remaining work to hit your target grade.
StudentsYou need 98.0% on the remaining work to finish at 90%. A perfect score would give you 90.4%.
Sometimes the remaining work is not a final exam but a last unit test, a project, or the rest of the term combined. This calculator answers the same question in that general form: with the grade you hold now and the weight of what is left, what average do you need on the remaining work to finish at your target? It also shows when a target has already been secured, and when it is no longer mathematically reachable.
How to use the Grade Needed Calculator
- Enter your grade on the work completed so far.
- Enter the course grade you want to finish with.
- Enter the percentage of the course grade that is still to come.
- Read the average score you need on the remaining work.
Formula
Remaining Weight is the share of the course grade not yet decided, as a decimal. If 30% of the course is still to be graded, the weight is 0.30.
Worked example
Your current grade is 82% and 30% of the course remains. To finish at 85%: needed = (85 - 82 x 0.70) / 0.30 = (85 - 57.4) / 0.30 = 92%. You need to average 92% on the remaining work. To finish at 80% instead, the same formula gives 75.3%, a much calmer target.
Good to know
The honest value of this calculation is triage. A needed score in the low 90s across several remaining assessments is demanding but plausible; a needed score above 100% on the only remaining test means the target should be revised or discussed with the teacher while options such as reassessment or extra credit still exist. Also beware of optimistic inputs: use your grade on completed work only, weighted the way your syllabus weights it, not the simple average of your test scores.
US grading scale reference
The table below is the US plus/minus scale used across this site. Where this tool offers other scales, the Canadian scale sets an A from 85% with a pass at 50%, and the Australian scale uses the bands HD (85%+), D (75-84%), C (65-74%), P (50-64%) and F (below 50%) on a 7.0 GPA.
| Letter grade | Percentage | GPA points |
|---|---|---|
| A+ | 97–100% | 4.0 |
| A | 93–96% | 4.0 |
| A- | 90–92% | 3.7 |
| B+ | 87–89% | 3.3 |
| B | 83–86% | 3.0 |
| B- | 80–82% | 2.7 |
| C+ | 77–79% | 2.3 |
| 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 | 0–59% | 0.0 |
Frequently asked questions
How do I calculate the grade I need?
Take your target, subtract your current grade multiplied by the share already decided, and divide by the share remaining. The worked example above shows each step with real numbers.
What does a needed score over 100% mean?
The target cannot be reached with the remaining work alone. Lower the target to see what is achievable, or ask your teacher about reassessment and extra credit policies.
What if the calculator says I need a negative score?
Your target is already secured: even a zero on the remaining work would leave you above it. The calculator displays your guaranteed minimum grade in that case.
How do I work out the weight of remaining work?
Add the syllabus weights of everything not yet graded: the remaining tests, the project and the final. If the syllabus is in points, divide remaining points by total course points.
Is this the same as the final grade calculator?
The maths is identical. The final grade version is framed for one exam; this version is framed for any remaining work, including several tests and assignments combined.
Go deeper
Prefer the full walkthrough? Read our guide: How to Calculate Your Final Grade — it explains the method step by step with more worked examples.
Sources & further reading
- College Board BigFuture — How to Calculate Your GPA on a 4.0 Scale — The most widely cited US reference for letter-grade to 4.0-scale conversion.
- Khan Academy — free lessons and practice — Free study material for the subjects behind the grades.
Related tools
Last reviewed: November 2026. Results from this calculator are estimates based on the published scales above; your school's recorded grade is the official one.