Thanks for visiting 5e Jump Calculator, a straightforward online tool created to fix a common D&D 5e table slowdown: jumping.

If you’ve ever been the DM who paused combat to flip through the Player’s Handbook, argued over if that chasm is actually jumpable, or tried to reconstruct from memory exactly how the jumping math works, this tool was built with you in mind.

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

High jump height

Maximum reach during a jump

Key distances based on the 5e rules as written

No page-flipping, no rough estimates—just straightforward outputs you can rely on.

Why I Built This Tool

This site was the result of real table frustration.

As a D&D fan who runs and joins games, I often hit the same situation:

A player asks, "Can I make that jump?" and the entire table stalls while we check the rules.

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 made a dedicated tool.

5e Jump was originally just a quick private tool, and then I cleaned it up and put it online in case other tables were running into the same problem.

How the Calculator Handles the Rules

This tool uses 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

Factors in your height and reach where appropriate

Respects the rules as written, without adding homebrew assumptions

You don’t need to know the exact formula. 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:

Fast enough to use mid-session

Understandable even if you’re new to 5e

Accurate enough for rules lawyers

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

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

Where This Might Go

Right now, 5e Jump Calculator is deliberately simple: it solves the jump problem and stops there.

In the future, I may:

Add more 5e movement-related tools

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 an idea for improvement, you’re welcome to contact me. This site is built to help real tables, and your experience at the table is what matters most.

Thanks for stopping by. May it help your party jump a little farther and your rules debates be a little shorter.