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ADHD Calculator

Free Online ADHD Calculator

An advanced tool to assess potential Attention-Deficit/Hyperactivity Disorder symptoms based on worldwide diagnostic standards

ADHD Symptom Assessment

Inattention Symptoms

1. How often do you have difficulty sustaining attention in tasks or play activities?
2. How often do you make careless mistakes in schoolwork or work tasks?
3. How often do you have trouble organizing tasks and activities?

Hyperactivity/Impulsivity Symptoms

4. How often do you fidget with hands or feet or squirm in seat?
5. How often do you feel restless or have difficulty staying seated?
6. How often do you interrupt or intrude on others’ conversations or activities?

Assessment Results

Inattention Score
0
Threshold: ≥14
Hyperactivity Score
0
Threshold: ≥14

Interpretation

Complete the assessment to see your results interpretation based on global ADHD diagnostic standards.

Model Year: 2024

Complete the ADHD symptom assessment to view your detailed results and graphical analysis.

This calculator uses diagnostic criteria from multiple countries including the USA, UK, Canada, Australia, and EU nations.

Understanding ADHD Assessment Scores

Inattention Symptoms

Inattention in ADHD involves difficulty sustaining focus, following detailed instructions, and organizing tasks. People may make careless mistakes, avoid mentally demanding work, and frequently lose items.

Hyperactivity Symptoms

Hyperactivity manifests as excessive movement, restlessness, and difficulty staying seated. In adults, this may present as extreme restlessness or wearing others out with constant activity.

Impulsivity Symptoms

Impulsivity includes hasty actions without considering consequences, difficulty waiting turns, interrupting others, and making important decisions without careful thought.

ADHD Diagnostic Standards Worldwide

ADHD diagnosis varies slightly across different countries and healthcare systems:

United States (DSM-5) United Kingdom (NICE) Canada (CADDRA) Australia (RANZCP) European Union (EAGG) Japan (JSCAP) Brazil (ABDA) South Africa (SASOP) India (IACAM) China (CPA)

While diagnostic criteria are similar globally, assessment tools may vary based on cultural factors and healthcare practices.

Important Disclaimer

This ADHD calculator is designed for informational purposes only and is not a diagnostic tool. Only qualified healthcare professionals can diagnose Attention-Deficit/Hyperactivity Disorder (ADHD). This assessment does not replace professional medical advice, diagnosis, or treatment. Always seek the advice of qualified health providers with any questions you may have regarding ADHD or any medical condition.

Discover your child’s autism risk level with our free Autism Risk Calculator for quick, personalized insights.

FAQs about ADHD

What is ADHD?
Attention‑Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental condition that affects how your brain pays attention, controls impulses, and manages energy levels. People with ADHD might find it hard to stay focused, feel restless, or act without thinking, but it also often comes with creativity, curiosity, and out‑of‑the‑box problem solving.


Do I have ADHD?
Only a qualified professional can diagnose ADHD, but if you regularly struggle with staying organized, meeting deadlines, or sitting still—especially since childhood—it could be a sign. Taking a structured screening (like an ADHD calculator) and discussing the results with a psychologist or psychiatrist is the best next step.


Is ADHD a disability?
ADHD is recognized as a disability under many education and employment laws because it can significantly impact daily life, learning, and work performance. That designation helps people access accommodations—like extra time on tests or flexible work hours—so they can succeed.


What does ADHD stand for?
ADHD stands for Attention‑Deficit/Hyperactivity Disorder. The name highlights the three core features: challenges with attention, hyperactive behavior, and impulsivity.

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