5e Jump Calculator

You’ve found 5e Jump Calculator, a straightforward online tool designed to tackle a surprisingly fiddly D&D 5e rule: working out jump distances.


If you’ve ever been the DM who stopped a session to flip through the Player’s Handbook, argued over if that chasm is actually jumpable, or tried to reconstruct from memory how Strength and movement interact, this tool was built with you in mind.





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 spits out your:





Long jump distance


Maximum high jump


Maximum reach during a jump


Other useful jump-related numbers based on the official rules



No guesswork, no mid-session rule dives—just clear results you can rely on.





The Story Behind the Site

This site was inspired by actual game-night problems.


As a Dungeon Master and player, I kept running into the same situation:




Someone wants to clear a gap, leap to a ledge, or vault over an obstacle, everyone stops to argue about the math.




The 5e rules for jumping aren’t especially complicated, but they are easy to forget. I was tired of re-reading the same paragraph every few sessions, so I did what many nerdy DMs do: I built a calculator.


5e Jump Calculator was originally just a quick private tool, and then I turned it into a site so others could use it in case other tables were running into the same problem.





How It Works (In Plain Language)

This tool uses the official Dungeons & Dragons 5th Edition jumping rules found in the Player’s Handbook.