Grade Calculator

Grading Mode

Choose how your class is graded.

Letter Grade Scale

Item	Score	Out of	Weight % (weighted mode)	Action

Target Course % (optional)

Used to compute the required score on the Final.

Final Exam Weight % (optional)

Weight of the final towards the course grade.

Import (CSV or JSON) — client-side only

Drag & drop a CSV/JSON here, or click to select a file

CSV columns: item,score,out_of,weight (weight optional)

Points mode: Course % = (Σ scores) / (Σ out_of) × 100.
Weighted % mode: For each row, row% = score/out_of × 100. Course % = Σ(row% × weight) ÷ Σ weights.
Letter grade is mapped from the selected scale (US or US+/−).
Required final % (if target + final weight set): target = current×(1−w) + final×w, where w is final weight (0–1).
CSV import: item,score,out_of,weight (weight optional; ignored in points mode).
Validation: Scores and “out of” must be non-negative; “out of” must be > 0. Weights can sum to anything; we normalize to Σweights actually provided.

Notes & edge cases

If no weights are provided in weighted mode, result is undefined—add weights or switch to points mode.
Needed final % may be >100% (ambitious) or <0% (already achieved target).
Export creates a JSON snapshot of your current table/settings.