Darth Grader calculates a route grade based on the addition of several route and boulder sections separated by rests. It can help you define the grade of the last route you climbed. The route breakdown must be done from the ground to the anchor. To be as accurate as possible, you must not forget any movement. You can also try out our other calculators for breaking down boulders into single or multiple moves sections, as well as for calculating an overall grade for a multi-pitch: the [Multi-Pitch Darth Grade]. Same algorithm is used for all calculators.