5e Jump Calculator Welcome to 5e Jump Calculator, a straightforward online tool created to fix a common D&D 5e table slowdown: figuring out jumps. If you’ve ever been the DM who paused combat to dig through the PHB, argued over whether a running start is enough, or tried to reconstruct from memory which stats affect jump distance, this site is for you. What Is 5e Jump Calculator? 5e Jump Calculator is a free web tool that automates the D&D 5e jump math so you don’t have to. You enter a few details about your character—including Strength, height, and situational modifiers—and the calculator immediately calculates your: Maximum long jump distance Maximum high jump Effective reach while jumping Other useful jump-related numbers based on the official rules No page-flipping, no rough estimates—just clear results you can rely on. The Story Behind the Site This site was born from repeated rules questions at the table. As a DM who also plays regularly, I kept noticing the same situation: A character wants to do something cool and cinematic with a jump, the entire table stalls while we check the rules. The 5e rules for jumping aren’t especially complicated, but they are easy to forget. I found myself reaching for the PHB over and over again, so I did the sensible nerd thing: I built a calculator. 5e Jump Calculator began as something I used just for my home games, and then I cleaned it up and put it online in case other tables were running into the same slowdown. Under the Hood (Without the Jargon) This tool follows the official Dungeons & Dragons 5th Edition jumping rules as laid out in the core rules.