You’ve found 5e Jump Calculator, a small online tool created to fix a common D&D 5e table slowdown: working out jump distances.

If you’ve ever stopped a session to dig through the PHB, argued over if that chasm is actually jumpable, 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 free web tool that turns the official 5th Edition jumping rules into instant numbers.

You provide basic character info—such as Strength, height, and whether you have a running start—and the calculator instantly shows your:

Maximum long jump distance

Maximum high jump

Maximum reach during a jump

based on the 5e rules as written

No page-flipping, no rough estimates—just clean numbers you can rely on.

Why This Calculator Exists

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

As a DM who also plays regularly, I kept running into the same situation:

Someone wants to clear a gap, leap to a ledge, or vault over an obstacle, everyone stops to argue about the math.

The 5e rules for jumping are simple on paper but annoying in the moment. I found myself reaching for the PHB over and over again, so I did the sensible nerd thing: I made a dedicated tool.

5e Jump Calculator was originally just a quick private tool, and then I turned it into a site so others could use it in case other tables were just as tired of flipping pages mid-session.

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 score to determine base jump distances

Accounts for running vs standing jumps

Factors in your height and reach where appropriate

Respects the rules as written, without adding homebrew assumptions

You never have to think about the math directly. The calculator does the work and shows you the result that matters at the table.

Making the Most of the Calculator

5e Jump Calculator is meant to be:

Quick enough for live play

Clear enough for new players

Reliable for tables that like to follow RAW

You can use it to:

Verify a jump before the roll

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 steal the spotlight.

What’s Next?

Right now, 5e Jump Calculator is deliberately simple: it handles jump distances cleanly.

In the future, I might:

Expand into other movement calculators

Support more edge cases and optional rules

Improve the layout and usability based on feedback

If you find a bug, or if you have an idea for improvement, you’re welcome to contact me. This site is built to help real tables, and your feedback helps shape what it becomes next.

Thanks for using 5e Jump Calculator. I hope it saves you a few minutes—and a few arguments—every session.