🎓 GPACalcy

Weighted vs unweighted GPA

"Weighted" is two different calculations that share a name. One adds bonus points for harder courses. The other, which GPACalcy's Weighted button uses, changes how many credits that course represents in the average.

Updated October 27, 2026

Unweighted means credits only

An unweighted GPA uses the grade points on your scale and the credits of each course. Nothing else. An A in a regular history class and an A in an AP history class both contribute 4.0 per credit on a 4.0 scale. The course title does not matter. The how-to-calculate guide is entirely this method: quality points = grade points × credits, then divide by credits.

An unweighted 3.7 from two schools is comparable only when both used the same letter chart. They often disagree about A− and B+.

Bonus-point weighting, the high school kind

Many U.S. high schools print a second number called a weighted GPA. The usual rule adds a bonus to the grade points of designated courses and leaves the credits alone. A common bonus is +1.0 for AP or IB and +0.5 for Honors, though some schools use one bonus for both, and some cap the result. An A in AP Biology might be stored as 5.0 instead of 4.0. A B might be stored as 4.0 instead of 3.0. Because the points can exceed 4.0 while the credits stay the same, the average itself can exceed 4.0.

Worked example: bonus points

Two courses, both reported as A on the transcript letters. Art is a regular 3-credit class (4.0). AP Biology is a 4-credit class and the school adds 1.0, so it counts as 5.0.

Quality points = 4.0 × 3 + 5.0 × 4 = 12 + 20 = 32. Credits = 7. Weighted GPA = 32 / 7 = 4.571, which displays as 4.57 if you round to two decimals. The unweighted GPA for the same letters, treating both A's as 4.0, is (4.0 × 3 + 4.0 × 4) / 7 = 4.00. The entire gap is the 4 extra quality points from the bonus (1.0 × 4 credits). No credit total changed.

That 4.57 is a real weighted GPA at a school with this rule. GPACalcy will not produce it on the 4.0 scale. Grade points on that scale never exceed 4.0, the Weighted button does not add a bonus, and the display is capped at 4.00 anyway. If your transcript says 4.57, it came from a bonus chart. To sketch it here you would have to be on a scale where those bonus points exist as letters, or you would do the bonus arithmetic on paper, as above. Do not move the weight dropdown and expect 4.57 to appear.

What the Weighted button actually does

Switch the calculator to Weighted and each row gains a weight: 0.5, 1.0, 1.5, or 2.0. The default is 1.0, which matches unweighted mode. For any other weight the page computes:

  • Quality points = grade points × credits × weight.
  • Credits counted = credits × weight.
  • GPA = total quality points / total weighted credits.

The weight scales the course up or down inside the average. It does not change the letter's grade points. An A remains 4.0 on the 4.0 scale no matter which weight you pick. If every course has the same grade points, the weights cancel and the GPA does not move. Weights only matter when the grades differ.

Worked example: a high grade with a high weight

Art, C (2.0), 3 credits, weight 1.0. AP Biology, A (4.0), 4 credits, weight 2.0.

Unweighted, both at weight 1: quality points = 2.0 × 3 + 4.0 × 4 = 6 + 16 = 22. Credits = 7. GPA = 22 / 7 = 3.1428, shown as 3.14.

With the weights above: Art contributes 2.0 × 3 × 1.0 = 6.0 quality points and 3 weighted credits. AP Biology contributes 4.0 × 4 × 2.0 = 32 quality points and 8 weighted credits. Total quality points = 38. Total weighted credits = 11. GPA = 38 / 11 = 3.4545, shown as 3.45.

Giving the A twice the pull raised the average, from 3.14 to 3.45. It did not create a 5.0, and the result is still under 4.0.

The same weights with the low grade on the heavy course

Art, A (4.0), 3 credits, weight 1.0. AP Biology, C (2.0), 4 credits, weight 2.0.

Unweighted: (4.0 × 3 + 2.0 × 4) / 7 = 20 / 7 = 2.86. Weighted: Art is 4.0 × 3 × 1 = 12 quality points and 3 credits. AP Biology is 2.0 × 4 × 2 = 16 quality points and 8 credits. GPA = 28 / 11 = 2.55.

The weighted result is lower. A weight above 1.0 is not a reward. It is emphasis. If the emphasized course is the weak one, the GPA falls. Students sometimes turn Weighted on for every honors class and assume the number must rise. Run the two examples before you trust that instinct. Type them into the calculator: 4.0 scale, Weighted, weights 1.0 and 2.0, credits 3 and 4. You should see 3.45 for the first pair and 2.55 for the second.

The 5.0 scale is a third switch

The scale menu and the weight dropdown do different jobs. On the 5.0 scale, every A you enter is 5.0, every B is 4.0, every A− is 4.7, and F is still 0.0. The added point applies to regular courses and advanced courses alike, because the menu does not know which rows are AP. Selecting 5.0 and then also setting weights will stack the two mechanisms. Do that only if your handbook actually stacks them.

A quick comparison, three courses at 3 credits each, letters A, B, and A−, unweighted. On the 4.0 scale the points are 4.0, 3.0, and 3.7. Quality points = 12 + 9 + 11.1 = 32.1. GPA = 32.1 / 9 = 3.57. On the 5.0 scale the points are 5.0, 4.0, and 4.7. Quality points = 15 + 12 + 14.1 = 41.1. GPA = 41.1 / 9 = 4.57. Dividing 4.57 by 5 and multiplying by 4 gives 3.66, which is not the 3.57 you get by rescoring the letters. The conversion guide stays on that point: change the chart, then recompute. Do not scale the finished number.

Which figure should you report

Report the one the form asks for, in the form's words. High school profiles often list both an unweighted GPA and a weighted GPA, and the school profile explains the bonus. College applications sometimes ask for the unweighted figure, sometimes ask you not to convert anything, and sometimes recalculate from the transcript themselves. This site cannot see that form. If a question says "weighted," read the school's definition before you click Weighted on this calculator. The button's definition is the credit-weight formula above, not the +1.0 bonus.

When a college recomputes, it often drops the bonus so applicants from schools with generous weights and schools with no weights can be read on one scale. That practice is common enough to plan for, and it is not universal. Keep both numbers, and keep the legend that produced them. A weighted 4.3 next to an unweighted 3.6 is a pair, not a single "real" GPA with a fake one beside it.

If nobody has told you that a course counts more heavily, leave the mode on Unweighted. A weight you invent will not match an official average, and the second example shows it can move the number in either direction.

Related guides