Welcome to 5e Jump Calculator, a tiny online tool created to fix a common D&D 5e table slowdown: jumping.

If you’ve ever halted the action to dig through the PHB, argued over how far a character can really leap, or tried to reconstruct from memory how Strength and movement interact, this tool was built with you in mind.

What This Tool Is All About

5e Jump Calculator is a no-frills calculator that automates the D&D 5e jump math so you don’t have to.

You provide basic character info—such as Strength, height, and whether you have a running start—and the calculator spits out 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 born from real table frustration.

As a Dungeon Master and player, I kept noticing 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 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 Calculator was originally 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 as written in the PHB. In simple terms, it:

Uses your Strength score to determine base jump distances

Accounts for running vs standing jumps

Factors in your height and reach where appropriate

Sticks closely to RAW and avoids house-rule shortcuts

You don’t have to memorize any of that. The calculator takes care of it and outputs just what you need for play.

Making the Most of the Calculator

5e Jump is meant to be:

Quick enough for live play

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

Resolve player stunts without bogging things down

Just enter the stats and read the output. It’s meant to fade into the background, not become the focus of the session.

What’s Next?

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

In the future, I may:

Expand into other movement calculators

Cover more special abilities and conditions

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 for DMs and players like you, and your feedback helps shape what it becomes next.

Thanks for stopping by. I hope it saves you a few minutes—and a few arguments—every session.