Welcome to 5e Jump Calculator, a straightforward online tool designed to tackle a surprisingly fiddly D&D 5e rule: jumping.

If you’ve ever been the DM who stopped a session to dig through the PHB, argued over if that chasm is actually jumpable, or tried to reconstruct from memory which stats affect jump distance, this site is for you.

So, What Does This Site Do?

5e Jump Calculator is a free web tool that automates the D&D 5e jump math so you don’t have to.

You provide basic character info—like Strength score, height, and a few relevant conditions—and the calculator instantly shows your:

Maximum long jump distance

Maximum high jump

Effective reach while jumping

Key distances based on the 5e rules as written

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

The Story Behind the Site

This site was the result of actual game-night problems.

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

A character wants to do something cool and cinematic with a jump, we all pause to look up the details.

The 5e rules for jumping aren’t especially complicated, but they are easy to forget. I didn’t want to keep re-explaining the same rule, so I did what many nerdy DMs do: I built a calculator.

5e Jump Calculator was just a quick private tool, and then I decided to share it in case other tables were running into the same slowdown.

How the Calculator Handles the Rules

This tool follows the official Dungeons & Dragons 5th Edition jumping rules found in the Player’s Handbook. 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

Respects the rules as written, without adding homebrew assumptions

You don’t have to memorize any of that. The calculator does the work and outputs just what you need for play.

Using This Tool During Play

5e Jump Calculator is meant to be:

Simple enough to use during combat

Accessible for beginners

Trustworthy enough for rules-focused groups

You can use it to:

Verify a jump before the roll

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 get out of the way, not become the focus of the session.

Where This Might Go

Right now, 5e Jump Calculator is focused on doing one thing well: 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

Improve the layout and usability based on feedback

If you notice an issue, or if you have a suggestion, feel free to reach out. This site is for DMs and players like you, and your experience at the table is what matters most.

Thanks for checking out 5e Jump Calculator. Here’s hoping it keeps your sessions moving and your jumps heroic.