Welcome to 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 halted the action 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 Is 5e Jump Calculator?

5e Jump Calculator is a free web tool that automates the D&D 5e jump math so you don’t have to.

You plug in your character’s stats—including Strength, height, and situational modifiers—and the calculator spits out your:

Long jump distance

Maximum high jump

Maximum reach during a jump

Other useful jump-related numbers based on the official rules

No guesswork, no mid-session rule dives—just clear results you can rely on.

Why This Calculator Exists

This site was inspired by repeated rules questions at the table.

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

Someone wants to clear a gap, leap to a ledge, or vault over an obstacle, the entire table stalls while we check the rules.

The 5e rules for jumping are straightforward, just not when you’re under time . I didn’t want to keep re-explaining the same rule, so I did what many nerdy DMs do: I wrote a little web app.

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 running into the same slowdown.

How It Works (In Plain Language)

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 never have to think about the math directly. The calculator takes care of it and gives you the final, table-ready numbers.

Making the Most of the Calculator

5e Jump Calculator is meant to be:

Simple enough to use during combat

Understandable even if you’re new to 5e

Reliable for tables that like to follow RAW

You can use it to:

Verify a jump before the roll

Design encounters with realistic jumps in mind

Resolve player stunts without bogging things down

Type in the numbers and let the calculator handle the rest. It’s meant to get out of the way, not become the focus of the session.

Future Plans

Right now, 5e Jump Calculator is focused on doing one thing well: it handles jump distances cleanly.

In the future, I plan to:

Expand into other movement calculators

Support more edge cases and optional rules

Improve the layout and usability based on feedback

If you notice an issue, or if you have a suggestion, feel free to reach out. This site is built to help real tables, and your feedback helps shape what it becomes next.

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