Thanks for visiting 5e Jump Calculator, a tiny online tool designed to tackle a surprisingly fiddly D&D 5e rule: working out jump distances.

If you’ve ever stopped a session to look up the exact jumping rules, argued over if that chasm is actually jumpable, or tried to reconstruct from memory exactly how the jumping math works, you’re in the right place.

What Is 5e Jump Calculator?

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—like Strength score, height, and a few relevant conditions—and the calculator instantly shows your:

Long jump distance

High jump height

Maximum reach during a jump

Other useful jump-related numbers based on the official rules

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

Why This Calculator Exists

This site was inspired by actual game-night problems.

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

A character wants to do something cool and cinematic with a jump, 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 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 began as something I used just for my home games, and then I decided to share it in case other tables were just as tired of flipping pages mid-session.

How the Calculator Handles the Rules

This tool uses 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

Accounts for running vs standing jumps

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 takes care of it and shows you the result that matters at the table.

Making the Most of the Calculator

5e Jump Calculator is meant to be:

Fast enough to use mid-session

Accessible for beginners

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

Resolve player stunts without bogging things down

Type in the numbers and let the calculator handle the rest. It’s meant to fade into the background, not slow you down with options.

What’s Next?

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

In the future, I might:

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, I’d love to hear from you. This site is meant to make your games smoother, and your feedback helps shape what it becomes next.

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