Thanks for visiting 5e Jump Calculator, a tiny 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 if that chasm is actually jumpable, or tried to remember exactly how the jumping math works, this site is for you.

What Is 5e Jump Calculator?

5e Jump Calculator is a free web tool that turns the official 5th Edition jumping rules into instant numbers.

You plug in your character’s stats—including Strength, height, and situational modifiers—and the calculator spits out your:

Long jump distance

High jump height

Maximum reach during a jump

Key distances based on the 5e rules as written

No back-of-the-napkin math, no rules confusion—just straightforward outputs you can rely on.

Why This Calculator Exists

This site was the result of repeated rules questions at the table.

As a and player, I often hit the same situation:

Someone wants to clear a gap, leap to a ledge, or vault over an obstacle, we all pause to look up the details.

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 the sensible nerd thing: I made a dedicated tool.

5e Jump Calculator started as a personal helper, and then I cleaned it up and put it online in case other tables were just as tired of flipping pages mid-session.

Under the Hood (Without the Jargon)

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

Uses your Strength to set how far and how high you can jump

Considers whether you have a running start

Uses your height for realistic reach calculations

Sticks closely to RAW and avoids house-rule shortcuts

You don’t need to know the exact formula. The calculator does the work and gives you the final, table-ready numbers.

How to Use It at Your Table

5e Jump Calculator is meant to be:

Fast enough to use mid-session

Understandable even if you’re new to 5e

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

Resolve player stunts without bogging things down

Open the site, fill in the fields, and you’re done. It’s meant to fade into the background, not become the focus of the session.

Future Plans

Right now, 5e Jump Calculator is kept lean on purpose: it solves the jump problem and stops there.

In the future, I plan to:

Add more 5e movement-related tools

Cover more special abilities and conditions

Polish the interface and add small quality-of-life features

If you find a bug, or if you want to request a feature, feel free to reach out. This site is meant to make your games smoother, and your input directly guides future changes.

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