About the Duke University GPA Calculator
Duke University uses a letter-grade grading system on a 0.0–4.0 scale. The highest grade, A+, is worth 4.00 grade points, while D (1.00) is typically the minimum passing grade. This calculator follows Duke University's official scheme (Duke Grading System), so the CGPA it returns matches what your transcript will show.
To calculate your GPA at Duke University, enter each course's name, credit hours, and the letter grade you received. The calculator weights every course by its credit hours and divides total grade points by total credits to produce your cumulative GPA — no signup required, and your inputs stay in your browser.
How Duke University's grading system works
What does an A+ mean at Duke University?
An A+ is the highest grade awarded at Duke University and is worth 4.00 grade points. This matches the top grade on the standard US 4.0 GPA scale.
What is a passing GPA at Duke University?
The minimum passing grade at Duke University is typically D, with a grade point value of 1.00. Most programs require a cumulative GPA above this threshold to remain in good academic standing — your faculty may set a higher bar for specific degrees, scholarships, or honours.
How does Duke University's scale compare to the US 4.0 GPA?
Duke University uses a 4.0 scale, which directly matches the standard US GPA system — no conversion needed.
CGPA vs SGPA at Duke University
SGPA (Semester GPA) reflects performance in a single semester, while CGPA (Cumulative GPA) averages performance across every completed semester, weighted by credit hours. This calculator works for either: enter just the current semester's courses to compute your SGPA, or include every completed course to get your CGPA at Duke University.