About Difficult Person Test

Difficult Person Test is a single-purpose site: one free difficult person test that works in the browser, with the method explained next to the result.

How we test the calculations

Before an update is published, the tool runs through 135 automated checks in a real browser: worked examples are recalculated, edge cases and wrong input are tried, and the layout is checked on desktop and on a phone.

What the explanations rely on

The formulas and reference values in the guides follow published standards and primary sources, linked where they are used: news.uga.edu.

Our approach

Pages are written and maintained by the site's editorial team. We aim to answer the question people actually ask, show worked examples with real numbers, and say plainly where a calculator cannot replace professional advice. Nothing on this site is sponsored content.

Keeping it current

Published October 8, 2026, last reviewed October 12, 2026. Corrections are welcome via the contact page; confirmed fixes go out with the next update.

Funding

The tool is free to use. The site is funded by advertising, which never influences results or explanations.

— Difficult Person Test editorial team