Letter Grade Calculator
Convert percentages to letter grades and 4.0 GPA points instantly. Standard US college scale with plus/minus grades.
About this tool
Convert any percentage score into a letter grade and 4.0 grade points on the standard US college scale with plus/minus grading.
Students use it to translate homework results into GPA math, and advisors use it when explaining exactly what B- means for a scholarship threshold — one number, no guesswork.
FAQ
What scale is used?
A common US college scale: A = 93-100, A- = 90-92, B+ = 87-89, down to F below 60. Institutions vary slightly.
How do grade points work?
Each letter maps to points (A = 4.0, A- = 3.7, B+ = 3.3…). GPA = points weighted by credit hours divided by total credits.
Which scale should I use for grad school?
Check your program’s official scale — some use 90+ for A, and GPA requirements often specify their own letter boundaries.