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  3. Final Grade Calculator

Final Grade Calculator

Find out exactly what score you need on your final exam to get an A, B, or C in the class. Enter your current grade, final exam weight, and target grade to see your required score instantly.

Final Exam Score Needed

Score Needed

110.0%

A+ on final

Current Grade85%
Final Weight20%
Desired Grade90% (A-)

Very unlikely — consider a lower target

You would need 110.0% — that's above 100%. Consider lowering your target to .

Enter Your Grades

Enter your current overall grade in the class, how much the final exam is worth, and the final grade you want to achieve.

You need a 110.0% on your final to get a 90% (A-) in the class.

Very unlikely — consider a lower target

Quick targets:

Achievability Breakdown

Current grade: 85%Target: 90%
TargetGradeNeeded on FinalStatus
90%A-110.0%✗ Impossible
80%B-60.0%✓ Easy
70%C-10.0%✓ Easy
60%D--40.0%✓ Easy

How It's Calculated

The formula used to find your required final exam score:

Final Score Needed = (Desired − Current × (1 − Weight)) ÷ Weight

Your calculation:

= (90 − 85 × (1 − 0.20)) ÷ 0.20

= (90 − 68.0) ÷ 0.20

= 110.0%

Saved Scenarios

Click Save above to store grading scenarios and compare them side by side.

Letter Grade Scale

A+

97%+

A

93%+

A-

90%+

B+

87%+

B

83%+

B-

80%+

C+

77%+

C

73%+

C-

70%+

D+

67%+

D

63%+

F

0%+

You need to score a A+ (110.0%) on your final exam.

Final Exam Score Needed

Score Needed

110.0%

A+ on final

Current Grade85%
Final Weight20%
Desired Grade90% (A-)

Very unlikely — consider a lower target

You would need 110.0% — that's above 100%. Consider lowering your target to .

Quick Answer

To find the score you need on your final exam: Needed Final Score = (Desired Grade − Current Grade × (1 − Final Weight)) ÷ Final Weight. For example, if your current grade is 85%, the final is worth 20% of your grade, and you want a 90%: (90 − 85 × 0.80) ÷ 0.20 = (90 − 68) ÷ 0.20 = 110%. If the result is over 100%, that target is not achievable.

Key Facts

  • Formula: Final Score Needed = (Desired − Current × (1 − Final Weight)) ÷ Final Weight
  • Final exams typically count for 15–30% of your overall grade
  • If the needed score exceeds 100%, your target grade is mathematically impossible
  • Standard letter scale: A = 90–100%, B = 80–89%, C = 70–79%, D = 60–69%, F = below 60%
  • A higher current grade means less pressure on the final exam
  • A low final weight (e.g. 10%) limits how much the final can change your grade
  • Extra credit before the final can raise your current grade and lower the score needed
  • Some professors curve final exam scores or drop your lowest test

Frequently Asked Questions

Use the formula: Needed = (Desired Grade − Current Grade × (1 − Final Weight)) ÷ Final Weight. For example, if you have an 85% and want a 90% with a final worth 20%: (90 − 85×0.80) ÷ 0.20 = 110%. If the result is over 100%, that target is not reachable.

Formula: (Desired − Current × (1 − Final Weight)) ÷ Final Weight. Over 100% = impossible.

If the calculator shows you need more than 100% on the final, your target grade is mathematically impossible with that final weight. Your options are: lower your target grade, earn extra credit before the final, or ask about a grading curve.

Over 100% means the target is impossible. Try a lower target or earn extra credit first.

The final exam changes your grade proportionally to its weight. A final worth 20% can move your overall grade by up to 20 percentage points. A final worth 50% can swing your grade dramatically. The higher the weight, the more impact.

Up to its weight. A 20% final can move your grade up to 20 points; a 50% final up to 50 points.

A passing grade is typically a D (60% or above) for undergraduate courses, or a C (70% or above) for graduate-level or prerequisite courses. Some programs require a C or higher to count the class toward a major. Check your syllabus for exact requirements.

Usually D (60%+) for undergrad, C (70%+) for grad or prerequisites. Check your syllabus.

Standard US scale: A = 90–100% (4.0 GPA), B = 80–89% (3.0), C = 70–79% (2.0), D = 60–69% (1.0), F = below 60% (0.0). Many schools add plus/minus: A− = 90–92%, B+ = 87–89%, etc. Check your institution for exact cutoffs.

A=90-100%, B=80-89%, C=70-79%, D=60-69%, F=below 60%. Plus/minus varies by school.

Final Exam Score Needed

Score Needed

110.0%

A+ on final

Current Grade85%
Final Weight20%
Desired Grade90% (A-)

Very unlikely — consider a lower target

You would need 110.0% — that's above 100%. Consider lowering your target to .