Grade Calculator

Enter the grade you have so far, how much the final exam is worth, and the final grade you want. This calculator solves for the exact exam score required.

If the answer is above 100%, the target cannot be reached with the exam alone — the calculator says so honestly instead of capping the number, so you can adjust your target or look for extra credit.

The formula

Required score = (Desired final − Current × (1 − exam weight)) ÷ exam weight

Worked example

Holding 90% with a final worth 20%, you need 80% on the exam to finish at 88%.

The example is pre-loaded in the result panel — press Calculate with your own numbers to replace it.

Frequently asked questions

What if the required score is over 100%?

The target is mathematically out of reach through the exam alone. Options include extra credit, dropping a low score if your syllabus allows it, or aiming for the highest reachable grade below your original target.

What if the required score is negative?

Your target is already secured — even a 0% on the exam would leave your final grade at or above the desired level.

Category: Everyday Life calculators

Sources & methodology

This calculator applies the formula shown on this page exactly as written, using the standard definitions for its inputs. Results are computed from the values you enter — no data is stored — and are rounded only for display.

Content last reviewed 2026-10-21 by CalcHub Editorial.

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Required exam score	80.00%
Assessment	Achievable: this is the minimum exam score needed to reach your target.

Quick answer