Letter Grade Converter
Letter-grade cutoffs vary by school, instructor, and course. This calculator uses the selected scale and does not determine an official grade. An A does not always begin at 90%.
Custom scale — lower threshold for each letter (must descend, F at 0%)
Percentage: · Letter grade:
Applied scale:
Thresholds and display rounding
95% is A, 85% is B, 75% is C, 65% is D, 55% is F on the example scale. 90% is A (the cutoff is included). 89.995% remains B even if the display rounds to 90.00%. Related: points grade calculator.