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5ejumpcalculator
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Opened Dec 11, 2025 by Quentin Cartwright@quentincartwri
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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 player who halted the action to flip through the Player’s Handbook, debated if that chasm is actually jumpable, or tried to reconstruct from memory exactly how the jumping math works, you’re in the right place.

What Is 5e Jump Calculator?
5e Jump Calculator is a no-frills calculator that turns the official 5th Edition jumping rules into instant numbers.

You enter a few details about your character—like Strength score, height, and a few relevant conditions—and the calculator immediately calculates your:

Long jump distance Maximum high jump Maximum reach during a jump Key distances based on the 5e rules as written


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

The Story Behind the Site
This site was inspired by actual game-night problems.

As a DM who also plays regularly, I kept running into the same situation:


A character wants to do something cool and cinematic with a jump, everyone stops to argue about the math.


The 5e rules for jumping are simple on paper but annoying in the moment. I didn’t want to keep re-explaining the same rule, so I did what many nerdy DMs do: I wrote a little web app.

5e Jump Calculator began as something I used just for my home games, and then I decided to share it in case other tables were running into the same slowdown.

Under the Hood (Without the Jargon)
This tool uses 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 Accounts for running vs standing jumps Factors in your height and reach where appropriate the rules as written, without adding homebrew assumptions


You don’t need to know the exact formula. The calculator does the work and shows you the result that matters at the table.

How to Use It at Your Table
5e Jump Calculator is meant to be:

Quick enough for live play Accessible for beginners Accurate enough for rules lawyers


You can use it to:

Verify a jump before the roll Plan interesting movement options during encounter prep Resolve player stunts without bogging things down


Just enter the stats and read the output. It’s meant to fade into the background, not steal the spotlight.

Future Plans
Right now, 5e Jump Calculator is deliberately simple: it calculates jumps accurately and clearly.

In the future, I may:

Expand into other movement calculators Support more edge cases and optional rules Improve the layout and usability based on feedback


If you notice an issue, or if you have a suggestion, you’re welcome to contact me. This site is meant to make your games smoother, and your experience at the table is what matters most.


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

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Reference: quentincartwri/5ejumpcalculator#1