GPA Calculator — Weighted GPA with US 4.0 / 4.3 and China Conversion

Real-world use cases

• Convert your transcript to 4.0 for a US grad-school application

  A US program's portal wants your cumulative GPA on the 4.0 scale, but your transcript is a Chinese 100-point one. Step one: enter every course with its credits and percentage. Step two: switch the scale to "China → 4.0 (standard)" for the band-table answer, then to "China → 4.0 (PKU formula)" for the continuous-formula answer. Step three: report whichever method the application names — and if it's silent, attach the band-table figure and note your method, because admissions readers expect that ambiguity and respect a stated one.

• Check whether you clear a scholarship's 3.5 cutoff

  A scholarship needs a 3.5 weighted GPA. Enter this term's courses, read the weighted figure, and compare. If you're at 3.46, the tool's unweighted-vs-weighted split tells you instantly whether a light elective is dragging you or whether your heavy courses are the problem. Then model a fix: bump the percentage on the course you're retaking and watch the weighted number cross 3.5 in real time before you commit to the retake.

• Build a transfer-school side-by-side comparison

  Two schools you're transferring to use different scales — one a flat 4.0, one a 4.3 where an A+ is rewarded. Enter your transcript once, then toggle between "US 4.0" and "US 4.3". If you have several A+ grades, the 4.3 view will read higher; if you don't, the two are identical. Screenshot each so your application essay can cite the exact number each school's own rubric produces, not a guess.

• Sanity-check a borderline grade before it's final

  You're sitting at 89.5% in a 4-credit course and the professor rounds. Enter the course at 89 and at 90 on the US 4.0 scale and watch the grade point jump from 3.3 (B+) to 3.7 (A-) — and the weighted GPA move with it, scaled by those 4 credits. Now you know in points exactly what one rounding decision is worth, which is the number to mention if you email the professor about it.

• Teach the weighted-average concept with a live example

  As an advisor or teacher explaining why GPA isn't just the average of letter grades, put two courses on screen: a 4-credit A and a 1-credit C. The unweighted mean (2.85) and the weighted GPA (3.54) land far apart, and the reference table shows the percentage bands behind each letter. Change a credit value and the gap visibly widens or closes — a faster intuition pump than a whiteboard derivation.

Common pitfalls

• Picking the wrong China-to-4.0 method. The coarse band table and the PKU formula can differ by 0.2–0.4 on the same transcript. Use the one the application names; don't quietly report the higher of the two and hope nobody checks — evaluation services recompute and a mismatch reads as inflation.

• Leaving credits blank on courses you want counted. A row with 0 or blank credits is dropped from the math entirely. If your GPA looks suspiciously high or a course seems missing from "total credits", check that its credit field is above 0.

• Confusing the weighted GPA with the unweighted mean. The big number is credit-weighted (what registrars use); the smaller secondary figure is the plain average. Quoting the unweighted mean on an application that expects the weighted one will not match your official transcript.

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