You’ve found 5e Jump Calculator, a tiny online tool designed to tackle a surprisingly fiddly D&D 5e rule: jumping.

If you’ve ever been the player who halted the action to look up the exact jumping rules, debated whether a running start is enough, or tried to reconstruct from memory which stats affect jump distance, you’re in the right place.

So, What Does This Site Do?

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

You enter a few details about your character—such as Strength, height, and whether you have a running start—and the calculator spits out your:

Maximum long jump distance

Maximum high jump

Effective reach while jumping

Other useful jump-related numbers based on the official rules

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

Why This Calculator Exists

This site was born from actual game-night problems.

As a DM who also plays regularly, 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 straightforward, just not when you’re under time pressure. 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 running into the same slowdown.

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

Accounts for running vs standing jumps

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 takes care of it and outputs just what you need for play.

Making the Most of the Calculator

5e Jump Calculator is meant to be:

Simple enough to use during combat

Accessible for beginners

Accurate enough for rules lawyers

You can use it to:

Check whether a character can clear an obstacle before they commit

Design encounters with realistic jumps in mind

Keep moving without arguing over distances

Type in the numbers and let the calculator handle the rest. 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 calculates jumps accurately and clearly.

In the future, I might:

Add more 5e movement-related tools

Cover more special abilities and conditions

Improve the layout and usability based on feedback

If you spot something off, or if you want to request a feature, I’d love to hear from you. This site is built to help real tables, and your input directly guides future changes.

Thanks for stopping by. Here’s hoping it keeps your sessions moving and your jumps heroic.