School calculators
Weighted grades and GPA on a 4.0 scale.
The weighted grade page computes sum of (score × weight) divided by the sum of the weights still on the page. A final left at 0 percent with its real weight still filled in is treated as a written exam scored zero, not as an exam you have not sat. Delete that row, or set the weight to 0, until you have a score. Weights do not have to add to 100 while work is outstanding. The line under the result shows the weight you actually entered.
The GPA page uses a 4.0 plus/minus scale: A is 4.0, A− is 3.7, B+ is 3.3, and so on down to F at 0. There is no A+ key. Credits change the average. A 4-credit B pulls harder than a 2-credit C+. Pass/fail courses stay off the list. A school that keeps a replaced F, or that awards 4.3 for A+, will not match this chart. Use the scale printed on the transcript when it disagrees.