Grade Calculator

Q: What grade do I need on the final?

Required final = (target − current × (1 − final weight)) ÷ final weight. If you have 85% going in, the final is worth 30%, and you want 90% overall, you'd need (90 − 85×0.70) ÷ 0.30 = 101.7% — meaning 90% isn't reachable without extra credit.

Q: How do weighted grades work?

Each category (homework, tests, final, etc.) counts for a set percentage of the total. Your grade is the sum of each category's score times its weight, so a strong score in a heavily weighted category matters most.

Q: Can I still pass if I fail the final?

It depends on your current grade and the final's weight. Enter a target of your passing threshold (e.g. 60%) and the calculator shows the minimum final score you need — sometimes it's low enough that even a poor final still passes.

Find out exactly what you need on the final exam to reach your target grade — or calculate your current weighted grade from your categories.

What do I need on the final?

You need on the final

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Current weighted grade

Category	Score (%)	Weight (%)

Please enter at least one category with a weight.

Weighted grade

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The formulas

Needed final = (Target − Current × (1 − w)) ÷ w (w = final weight as decimal)
Weighted grade = Σ(score × weight) ÷ Σ weight

Worked example

Current 85%, final worth 30%, target 90%: (90 − 85×0.70) ÷ 0.30 = 101.7% — not reachable without extra credit. Lower the target to 88% and you'd need 95%.

Using it to plan finals week

This calculator turns anxiety into a number. Enter your passing threshold as the target to see the minimum you need (sometimes reassuringly low), or your dream grade to see how realistic it is. If the required score exceeds 100%, the target isn't reachable through the final alone — time to ask about extra credit or reset expectations. The weighting also shows where effort pays off: points in a heavily weighted final or exam move your grade far more than the same points in light homework. For your cumulative GPA across courses, use the GPA calculator.

Frequently asked questions

What grade do I need on the final?

(Target − current × (1 − final weight)) ÷ final weight. Over 100% means it's not reachable via the final alone.

How do weighted grades work?

Each category counts for a set % of the total; grade = Σ(score × weight) ÷ Σ weight.

Can I still pass if I fail the final?

Enter your passing threshold as the target to see the minimum final score needed.

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Note: Assumes a simple weighted grading scheme; check your syllabus for drops, curves, or extra credit. Last reviewed: July 2026.