Thanks for visiting 5e Jump Calculator, a small online tool designed to tackle a surprisingly fiddly D&D 5e rule: working out jump distances.

If you’ve ever paused combat to look up the exact jumping rules, debated how far a character can really leap, or tried to reconstruct from memory how Strength and movement interact, this site is for you.

So, What Does This Site Do?

5e Jump Calculator is a free web tool that takes the 5e jump rules and does the math for you.

You enter a few details about your character—such as Strength, height, and whether you have a running start—and the calculator immediately calculates your:

Long jump distance

Maximum high jump

Effective reach while jumping

Other useful jump-related numbers based on the official rules

No back-of-the-napkin math, no rules confusion—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 Dungeon Master and player, 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 are simple on paper but annoying in the moment. I was tired of re-reading the same paragraph every few sessions, so I took the obvious next step: I built a calculator.

5e Jump Calculator started as a personal helper, and then I turned it into a site so others could use it in case other tables were running into the same problem.

How the Calculator Handles the Rules

This tool implements the official Dungeons & Dragons 5th Edition jumping rules as written in the PHB. In simple terms, it:

Uses your Strength score to determine base jump distances

Considers whether you have a running start

Uses your height for realistic reach calculations

Respects the rules as written, without adding homebrew assumptions

You don’t have to memorize any of that. The calculator takes care of it and outputs just what you need for play.

How to Use It at Your Table

5e Jump Calculator is meant to be:

Quick enough for live play

Clear enough for new players

Trustworthy enough for rules-focused groups

You can use it to:

Check whether a character can clear an obstacle before they commit

Plan interesting movement options during encounter prep

Keep cinematic moments moving without arguing over distances

Type in the numbers and let the calculator handle the rest. It’s meant to get out of the way, not steal the spotlight.

Where This Might Go

Right now, 5e Jump Calculator is focused on doing one thing well: it handles jump distances cleanly.

In the future, I plan to:

Expand into other movement calculators

Cover more special abilities and conditions

the layout and usability based on feedback

If you notice an issue, or if you have an idea for improvement, I’d love to hear from you. This site is meant to make your games smoother, and your feedback helps shape what it becomes next.

Thanks for using 5e Jump Calculator. I hope it saves you a few minutes—and a few arguments—every session.