You’ve found 5e Jump Calculator, a small online tool built to solve one oddly specific D&D 5e problem: figuring out jumps.

If you’ve ever paused combat to dig through the PHB, debated if that chasm is actually jumpable, or tried to remember which stats affect jump distance, you’re in the right place.

What Is 5e Jump Calculator?

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—like Strength score, height, and a few relevant conditions—and the calculator immediately calculates your:

Long jump distance

High jump height

Effective reach while jumping

Other useful jump-related numbers based on the official rules

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

The Story Behind the Site

This site was the result of 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, 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 the same rule, so I did the sensible nerd thing: 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 laid out in the core rules. 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 have to memorize any of that. 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

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 support your game quietly, not slow you down with options.

What’s Next?

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

In the future, I might:

Expand into other movement calculators

Support more edge cases and optional rules

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

If you notice an issue, or if you have a suggestion, feel free to reach out. This site is built to help real tables, and your experience at the table is what matters most.

Thanks for checking out 5e Jump Calculator. May it help your party jump a little farther and your rules debates be a little shorter.