Grade Average Calculator

A grade average summarizes what you’ve earned so far from completed work. It’s a snapshot of your current performance based on existing scores and, if relevant, weights or total points. A final grade usually includes future work—like a final exam, project, or remaining assignments—that can change the outcome. That’s why a current average can look strong early in the term but shift after larger assessments are added. For planning, use your average plus the optional target-grade feature to estimate what you need on remaining work.

Use weighted mode if your syllabus lists category weights (for example, Exams 60%, Homework 20%, Quizzes 20%). In that structure, each category contributes by percentage, not by raw points. Use points-based mode if your gradebook totals points (earned/possible) across assignments, where a 100-point exam naturally matters more than a 10-point quiz. If you’re unsure, try both modes with the same data and compare the result to your class portal—whichever matches more closely is likely the correct model.

If weights don’t sum to 100, this calculator can normalize them (default ON). Normalization rescales each weight by dividing by the total weight sum so the set behaves like 100% without changing the relative importance of rows. For example, 40/30/20 totals 90; after normalization those become approximately 44.44/33.33/22.22. If you turn normalization OFF, the calculator uses raw weights and effectively treats the sum as-is, which can understate or overstate results depending on how you interpret incomplete weights. The breakdown clearly states which policy was applied.

The calculator computes your average using full floating precision, then applies your selected rounding policy to produce the displayed percentage. You can choose “Round half up” (0.5 rounds upward) or “Banker’s rounding” (0.5 rounds to the nearest even value). Letter grade thresholds are then applied to the rounded displayed percentage so your numeric result and letter grade stay consistent. If your instructor uses a different rounding policy (or rounds at each assignment rather than at the end), results may differ slightly, especially near grade boundaries.

Yes. In both modes you can include a missing assignment as earned = 0 with a valid max points value. That will lower the average and reflects how most gradebooks treat missing work. If your teacher temporarily excludes missing entries until they’re graded, you may want to omit them for a “current posted average,” and then add them back to see a worst-case scenario. In weighted mode, be careful to match how your class defines weights—some teachers weight categories, not individual assignments.

Extra credit policies vary. If extra credit is already included in max points (for example, max = 105 with 5 extra), you can enter earned and max normally. If extra credit is awarded as “bonus points” beyond the original max, some teachers allow earned > max. This calculator validates earned ≤ max by default to prevent common data-entry errors. If your class uses true bonus points, a practical approach is to increase max points to include the bonus opportunity (so earned stays ≤ max) or add a separate row representing bonus points as an assignment category, depending on how your teacher records it.

Differences usually come from one of four causes: (1) the portal uses category weighting while you entered individual assignments with separate weights; (2) the portal drops lowest scores or applies special rules; (3) the portal rounds at different steps (per assignment/category) while this calculator rounds at the end; or (4) the portal excludes ungraded items. Use the breakdown section to compare row-by-row, check that max points match your portal, and confirm whether weights should be normalized or must sum to 100 exactly.

No. This widget runs locally in your browser and does not transmit your inputs. There are no external libraries, no trackers inside the calculator code, and no network calls for computation. Copy buttons generate plain text on your device only. If you refresh the page, your entries may reset depending on your browser’s behavior, but nothing is uploaded or saved by the calculator itself.

The GPA shown is labeled as an “Estimate” because GPA rules vary by school and sometimes depend on course level (honors/AP) or numeric-to-letter conversions. This calculator maps your rounded percentage to a simple 4.0 scale using typical cutoffs (A≈4.0, B≈3.0, C≈2.0, D≈1.0, F≈0.0) and includes plus/minus adjustments when you choose that scale. Treat it as a quick reference, not an official transcript calculation. If your institution uses a different mapping, rely on your school’s policy.