Free adult ADHD tests, compared
Free adult ADHD questionnaires compared on cost, details needed for results, item count, scale used and what each sells. Checked August 2026.
By NeuroType · Updated
Almost every free adult ADHD questionnaire online runs on the same underlying scale, the World Health Organization's Adult ADHD Self-Report Scale. The differences are in how many items are used, whether you have to hand over your details to see the result, and what the site does with your attention afterwards. Everything below was read off each live page on the date shown.
Every entry below was read off the named page on 3 August 2026. Sites change, so each row links its source. Where a column says “not stated”, it means that page did not say, not that the answer is no.
Side by side
| Tool | Cost | Email or account | Items | Instrument and attribution | Stated cutoff | What it says about your answers | Sold on the page |
|---|---|---|---|---|---|---|---|
| NeuroTypeThis siteSource, checked 30 September 2026 | Free, full result shown | No account, no email | Original NeuroType item set across several areas | Original NeuroType wording. Explicitly not the ASRS; NeuroType offers the published ASRS-6 screener separately at /adhd-test | None. Scored per area, with no combined total | States that individual answers stay in the browser and are not sent to a server | Optional paid reports are available (£2.99 single tool, £7.99 full profile). The free result stays free |
| ADDitudeSource, checked 3 August 2026 | Free | Optional. Offers to email results, but does not require it to see them | 6 | States it was adapted from the ASRS Screener from the World Health Organization and the Workgroup on Adult ADHD, and links a Harvard Medical School source | Not stated on the page | Not stated on the page | Not stated on the page |
| Mental Health AmericaSource, checked 13 August 2026 | Not stated on the page | Not stated on the page | 7 initial yes/no questions, then 18 further rating questions | Adult ADHD Self-Report Scale (ASRS) v1.1, citing Kessler et al. (2005) | Not stated on the page | Not stated on the page | Not stated on the page |
| The ADHD CentreSource, checked 3 August 2026 | States the quiz is free | Yes. Asks for first name, last name and email address to unlock the score | 12 | States it is based on the Adult ADHD Self-Report Scale and aligned with NICE and NHS criteria, without a citation link | No numeric cutoff stated. Results are given as risk bands | States responses are confidential, without describing storage | Sells assessment packages, stated from 695 pounds online and 1,095 pounds in person |
How to choose
Check what you have to give up to see your result
This is the sharpest difference in the table. One of these requires your name and email address before it will show your score, and it sells assessments starting at several hundred pounds. That is a legitimate business model, but it is worth knowing before you start answering questions about yourself.
Check whether the scale is named and cited
The ASRS is a specific instrument with a specific research base. A page that names it and cites Kessler et al. is telling you what you are taking. A page that gestures at 'evidence-based questions' without a citation is not.
If you want an ASRS score specifically
NeuroType's free ADHD test page at /adhd-test uses the published six-question ASRS v1.1 Screener, unchanged and with attribution, under its licensor's commercial-use terms. The ADHD traits reflection is a separate original tool, and its results are not comparable to an ASRS score.
Why there is no winner on this page
This page does not rank these tools and does not name a best one. Several of them administer the same questionnaire, so any ranking would be about presentation rather than about the instrument. More importantly, no self-report questionnaire can establish whether a condition is present, so ranking them by accuracy would imply a precision that none of them has.
NeuroType is one of the entries in the table and is described on the same terms as everything else, including where it offers less. It publishes no cutoff and no ASRS score, and if either is what you need then one of the other sites is the better choice.
Related pages
Frequently asked questions
Why do so many ADHD tests use the same questions?
Because most are built on the ASRS, the World Health Organization's Adult ADHD Self-Report Scale. Its six-question screener is short, widely used and well studied, which is why it turns up almost everywhere.
Is a six-question test enough?
The six-item ASRS screener was designed as a screener, meaning a quick first pass rather than a full picture. It is used to decide whether a longer conversation is worth having. It was never intended to settle the question on its own.
Does NeuroType use the ASRS?
Yes, for the six-question screener. The free ADHD test at /adhd-test uses the published ASRS v1.1 Screener unchanged, with attribution, under its licensor's commercial-use terms, and scores it in your browser. The separate ADHD traits reflection uses original wording, so its results cannot be compared with an ASRS score. The 18-item ASRS is not offered.
Can any of these diagnose ADHD?
No. Every one of them says so. A diagnosis requires a clinical evaluation that considers your history, daily impact and other possible explanations.
Safety note
Reflection tools can surface patterns; they can't confirm or rule out a condition. Take any concerns about your mental health or neurodevelopment to a qualified clinician.