Calculate final grade

Calculate the final-exam percentage needed to reach a weighted course target.

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ToolFinal Grade Calculator
Input
Output
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How it works

The work already completed contributes its current percentage multiplied by the non-final share of the course. Subtracting that contribution from the target and dividing by the final’s decimal weight gives the required exam mark; substituting 0 and 100 produces the reachable endpoints.

Formula
required final = (target − current × (1 − final weight ÷ 100)) ÷ (final weight ÷ 100)
  • Current mark, target, and final weight are required because each syllabus assigns its own assessment weights.
  • The final weight cannot be zero because the remaining-grade equation would have no denominator.

Worked example

Chasing an 80
Currently on 75 with the final worth 40%
Input
											Current grade: 75
Final weight: 40
Target grade: 80
Output
												Needed: 87.5
Achievable: yes
Verdict: You need 87.5% on the final.
If you get100: 85
If you get0: 45

When to use this

University module gradebooks combine coursework with a final examination, school syllabuses assign end-of-term assessment weights, and learning portals let students compare target grades with remaining work.

Edge cases

  • A required result above 100% places the target above the best reachable endpoint and is reported as out of reach.
  • A zero or negative requirement means the completed weighted work already preserves the target even with zero on the final.
  • When the final carries 100% of the course, earlier work contributes nothing and the required final percentage equals the target.