Test Grade Calculator

A test grade calculator converts a raw score (number of correct answers out of total) into a percentage, and optionally maps that to a letter grade. Different institutions use different grading scales — the US A-F scale, UK degree classifications, or percentage thresholds

The calculator uses the standard published formula for test grade. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, watts. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Percentage = (Points earned / Total possible points) × 100. Each step in the calculation is shown so you can verify the result manually.