# Current 80%, final worth 25%, want 85% — Final Grade Calculator

> With 80% current and a final worth 25%, you need 100% on the final to hit 85%. A perfect exam just barely gets you there — see if any partial score still works.

- **Answer:** Need 100% on the final
- **Category:** Education & Grades
- **Interactive calculator:** https://youcalc.com/en/education-grades/final-grade-calculator/need-on-final-80-want-85/
- **Price:** Free, no sign-up required
- **Full calculator:** [Final Grade Calculator](https://youcalc.com/en/education-grades/final-grade-calculator/)
- **Pre-filled inputs:** `c=80&t=85&w=25`

| Metric | Value |
| --- | --- |
| Current grade | 80% |
| Final weight | 25% |
| Target grade | 85% |
| Required final score | 100% |
| Best possible outcome | 85% |
| Minimum guaranteed | 60% |


## Overview

At 80% going into a final worth 25%, the required score to finish at 85% is exactly 100% — achievable only with a perfect exam. The formula is (85 − 80 × 0.75) ÷ 0.25 = (85 − 60) ÷ 0.25 = 100. A final worth only a quarter of the course does not leave much room to close a 5-point gap. Adjust the numbers below to explore other scenarios.

## Method

The required final score is derived from the weighted-average course grade formula: course grade = current × (1 − w) + final × w, where w = finalWeight / 100. Rearranging to isolate the final exam score gives: required = (target − current × (1 − w)) / w. The best-case course grade assumes a perfect 100 on the final; the worst-case assumes 0. Both are computed from the same formula with the final score substituted in. Sources: RogerHub Final Grade Calculator (https://rogerhub.com/final-grade-calculator/) and Calculator.net Grade Calculator (https://www.calculator.net/grade-calculator.html).

## Related calculators

- [GPA Calculator](https://youcalc.com/en/education-grades/gpa-weighted-grade/)
- [Weighted Grade Calculator](https://youcalc.com/en/education-grades/weighted-grade-calculator/)
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## Sources

- https://rogerhub.com/final-grade-calculator/
- https://www.calculator.net/grade-calculator.html

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Interactive version: https://youcalc.com/en/education-grades/final-grade-calculator/need-on-final-80-want-85/ · From YouCalc — https://youcalc.com