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SNAP Score Calculator

Health

Score a simplified SNAP-style attention and behavior rating from 6 common questions. A quick self or parent-report reference tool, not a diagnostic instrument.

Reviewed by the thecalcu.com team · Last updated July 15, 2026

SNAP Total Score

0
Average Item Score
0

This calculator computes your SNAP Total Score, Average Item Score from the values you enter.

Inputs
Fails to give close attention to details / makes careless mistakesHas difficulty sustaining attention in tasks or playDoes not follow through on instructions / fails to finish tasksFidgets with hands/feet or squirms in seatLeaves seat when remaining seated is expectedInterrupts or intrudes on others
Outputs
SNAP Total ScoreAverage Item Score

What is a SNAP Score?

The SNAP Score Calculator scores a simplified, SNAP-style behavior rating covering six common attention, hyperactivity, and impulsivity behaviors. It's inspired by the structure of SNAP (Swanson, Nolan, and Pelham) questionnaires commonly used as a starting reference point when discussing behavior patterns, though this simplified version is not the full validated clinical instrument.

This is a reference tool, not a diagnosis. ADHD and related conditions require evaluation by a qualified healthcare professional. See also the GAD-7 and PHQ-2 calculators for related self-screening tools.

Why Use a SNAP Score Calculator?

Structured behavior rating scales give parents, teachers, and individuals a consistent way to describe frequency of specific behaviors rather than a vague overall impression. This calculator automates the scoring so you can quickly see a total and average score across the six items.

Who Should Use This Calculator?

  • Parents and teachers wanting a structured way to track specific behavior patterns over time.
  • Adults doing a private self-reflection on their own attention and focus patterns.
  • Students of psychology or education learning about behavior rating scale structures.
  • Anyone preparing notes ahead of a conversation with a pediatrician or psychologist.

What Insights Does the SNAP Score Calculator Give You?

The SNAP Total Score (0-18) is the headline result, summing all six behavior ratings. The Average Item Score shows the mean rating per behavior, useful for a normalized reference point regardless of how many items are rated highly versus low.

How to use this SNAP Score calculator

  1. Rate each of the six behaviors from Not at all to Very much, based on recent observed frequency.
  2. Read the SNAP Total Score and Average Item Score instantly.
  3. Use the results as a starting point for a conversation with a pediatrician, psychologist, or other qualified professional, not as a standalone assessment.
Show formula & methodology ↓Show less ↑

Formula & Methodology

Each of the six behaviors is scored 0 (Not at all) to 3 (Very much):

Total Score = Sum of all 6 item scores (range: 0-18)

Average Item Score = Total Score ÷ 6

Worked example, ratings of 2, 3, 1, 2, 1, 2:

Total Score = 2+3+1+2+1+2 = 11

Average Item Score = 11 ÷ 6 = 1.83

As with any behavior rating tool, results are best used to inform, not replace, a conversation with a qualified professional.

Frequently Asked Questions

What is a SNAP score?
A SNAP score is a behavior rating derived from a SNAP-style questionnaire (Swanson, Nolan, and Pelham), which asks a parent, teacher, or self-rater to score the frequency of common attention and hyperactivity-related behaviors. It's used as a quick reference for tracking behavior patterns, not as a diagnostic tool.
Is this the official SNAP-IV rating scale?
This is a simplified 6-item version inspired by the structure of SNAP-style questionnaires, covering common attention, hyperactivity, and impulsivity behaviors. It is not the full validated SNAP-IV instrument used in clinical ADHD assessment.
How is the SNAP score calculated?
Each of the six behaviors is rated from 0 (Not at all) to 3 (Very much), and the six ratings are summed for a total score, with an average per-item score also shown for reference.
Is a high SNAP score a diagnosis of ADHD?
No, this calculator provides a simplified behavior rating for reference and reflection only. ADHD diagnosis requires a comprehensive clinical evaluation by a qualified healthcare professional, not a self- or parent-report questionnaire alone.
Who typically completes a SNAP-style questionnaire?
SNAP-style questionnaires are traditionally completed by parents or teachers observing a child's behavior across settings, since behavior can look different at home versus school, though this simplified version can be used for general self-reflection as well.
What behaviors does this calculator ask about?
The six items cover attention to detail, sustained attention, following instructions, fidgeting, difficulty staying seated, and interrupting others, common behaviors referenced in attention and hyperactivity screening questionnaires.
What should I do if my SNAP score is high?
Consider discussing the specific behaviors with a pediatrician, psychologist, or other qualified healthcare professional, who can conduct a full evaluation using validated clinical instruments and gather information from multiple settings.
Can this calculator be used for adults?
The underlying SNAP-style items were originally developed with children in mind, though similar attention and hyperactivity behaviors are sometimes self-rated by adults; interpretation for adults should still involve a qualified healthcare professional.
Is my SNAP score data stored anywhere?
No, this calculator runs entirely in your browser and does not transmit, store, or share your answers anywhere.
How is this different from the GAD-7 or PHQ-2 calculators?
The [GAD-7](/gad-7-calculator/) and [PHQ-2](/phq-2-calculator/) screen for anxiety and depression symptoms respectively, while this SNAP-style tool focuses on attention and hyperactivity-related behaviors, each uses a different validated questionnaire structure for a different purpose.
Also known as
SNAP-IV calculatorADHD rating scale calculatorattention behavior scoreSNAP questionnaire score