How to use this calculator
Your current grade is the average of work already completed, excluding the final. For example, enter 80 if your completed assignments average 80%, even if those assignments are only 60% of the course. Do not enter their already-weighted contribution of 48.
The formula
Required final = (target − current × (1 − final weight ÷ 100)) ÷ (final weight ÷ 100). If final weight is 100%, required final = target.
A worked example
With a current average of 80%, an overall target of 85%, and a final worth 40%, the completed-work contribution is 80 × 0.6 = 48. You need (85 − 48) ÷ 0.4 = 92.5% on the final.
What to keep in mind
- Current and target grades use a 0–100 percentage scale. The final weight must be greater than 0% and at most 100%.
- A result below zero is shown as calculated and means a zero final already reaches the target. A result above 100% is shown and explained as unattainable with a maximum score of 100%.
- A final weighted at 100% ignores the current grade. No school-specific letter-grade or rounding rules are assumed.
Formula v1.0.0 · Updated November 6, 2026 · Results: up to 4 decimal places, rounded half up. Very small nonzero values use scientific notation.