Welcome to 5e Jump Calculator, a straightforward online tool created to fix a common D&D 5e table slowdown: figuring out jumps.

If you’ve ever been the player who stopped a session to dig through the PHB, debated whether a running start is enough, 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 simple online helper 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 spits out your:

Maximum long jump distance

Maximum high jump

Effective reach while jumping

Other useful jump-related numbers based on the rules

No page-flipping, no rough estimates—just clear results you can rely on.

The Story Behind the Site

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

As a DM who also plays regularly, I kept noticing 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 are straightforward, just not when you’re under time pressure. I found myself reaching for the PHB over and over again, so I did what many nerdy DMs do: I made a dedicated tool.

5e Jump Calculator began as something I used just for my home games, and then I turned it into a site so others could use it in case other tables were running into the same problem.

Under the Hood (Without the Jargon)

This tool follows the official Dungeons & Dragons 5th Edition jumping rules as laid out in the core rules. In simple terms, it:

Uses your Strength score to determine base jump distances

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 need to know the exact formula. The calculator does the work and shows you the result that matters at the table.

Using This Tool During Play

5e Jump Calculator is meant to be:

Simple enough to use during combat

Clear enough for new players

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

Keep cinematic moments moving without arguing over distances

Open the site, fill in the fields, and you’re done. It’s meant to get out of the way, not steal the spotlight.

Where This Might Go

Right now, 5e Jump Calculator is focused on doing one thing well: it calculates jumps accurately and clearly.

In the future, I may:

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 have a suggestion, I’d love to hear from you. This site is built to help real tables, and your input directly guides future changes.

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