Final Grade Calculator

How to find the score you need

1. Enter the current percentage for all coursework except this final, normalized over the non-final part. Then enter the overall course percentage you want to reach at least. A total that already counts the final as zero is not the right starting point.
2. Enter the final’s share of the whole course. For 20%, enter 20, not 0.2. If the final is inside a tests category, find its overall course weight first.
3. Read the required score and its interpretation. Open Calculation details for the equation and exact possible range. Copy summary exports the current settings; if copying is denied, select the displayed summary. Clear starts again with blank fields.

Understand the grade basis

Think of the course as two parts. If the final counts for 30%, the current grade represents the other 70%. A gradebook can treat ungraded work in different ways, so confirm that its current average uses this basis.

Multiply the current grade by the non-final fraction and add the final score multiplied by the final fraction. To find the missing score, subtract the current contribution from the target, then divide by the final fraction.

A minimum must not be rounded down. A requirement of 96.666…% is displayed as at least 96.67%. This upward step of 0.01 percentage point is a display convention, not a promise that the exam awards hundredths or that your school rounds the same way.

Zero needed means the numerical target is secured even with a zero final, not that attendance is optional. Above 100% means the target lies outside the possible interval. At zero weight the final cannot change the grade; at full weight the current grade is unused.

Worked final-exam examples

Current 80%, target 85%, final weight 40%: the non-final contribution is 48 percentage points. The final must supply 37 more, so the required score is 37 ÷ 0.40 = 92.5%.

Current 80%, target 85%, final weight 30%: (85 − 56) ÷ 0.30 = 96.666…%. Aim for at least 96.67% on the displayed grid; rounding down would understate the requirement.

Current 80%, target 90%, final weight 20%: even 100% on the final produces only 84% overall. The theoretical requirement is 130%, so this target is unreachable under these weights.

Limits and course rules

Enter percentages from 0 to 100, with up to four decimal places. There is one remaining final and its score is also limited to 0–100%. No letter grade, GPA or national scale is converted automatically.

Other unfinished work, discarded tests, replacement scores, nested category rules, extra credit or mandatory exam conditions can change the answer. Check your syllabus or instructor’s rules; this calculator neither predicts performance nor assigns an official grade.

Calculation and privacy

The arithmetic runs in your browser. This tool does not intentionally upload or save your entered grades. Copy acts only when requested. The site’s ordinary services and consent settings are separate from this calculation.