Wonderlic Scores Explained: Tier Bands & Norms
The Wonderlic is a 50-question, 12-minute pre-hire cognitive screening test developed by E. F. Wonderlic in 1937. Population mean is 21 with a standard deviation of about 7. NFL Combine average is roughly 24. This guide walks through every tier band, what each score means, and how Wonderlic scores convert to IQ.
Score Bands at a Glance
| 0–13 | Below average | Below the 16th percentile of the general population. |
| 14–20 | Low average | Within roughly one standard deviation below the mean. Skilled trades cluster here. |
| 21–28 | Average to above | Population mean is 21. NFL Combine average ~24. Most office roles screen at this level. |
| 29–34 | Well above average | 84th–98th percentile. Programmer/attorney averages cluster around 30. |
| 35–50 | Exceptional | Top ~2% of test-takers. A perfect 50 is extraordinarily rare. |
What the Research Says
Wonderlic norms have been validated repeatedly since the 1940s. The publisher's data set is one of the largest occupational test norms in existence, drawn from millions of test-takers across pre-hire screening, military, and athletic contexts. Population mean of 21 (SD ~7) has been stable across decades.
The Wonderlic publisher's IQ conversion table is approximate. Roughly: Wonderlic 14 ≈ IQ 90; 21 ≈ IQ 100; 28 ≈ IQ 117; 30 ≈ IQ 120; 35 ≈ IQ 130. The Wonderlic is a speeded test, so it weights mental processing speed more heavily than untimed clinical IQ measures — the conversion is meaningful but imperfect.
NFL Combine attendees have averaged around 24 since the test became standard at the Combine in the 1970s. Position-level averages vary: offensive linemen and quarterbacks tend higher (24–28+); running backs and cornerbacks tend lower (16–18). These reflect who scouts choose to draft, not anything about intelligence by position.
Per-Score Interpretations
- Wonderlic score 7 interpretation
- Wonderlic score 13 interpretation
- Wonderlic score 14 interpretation
- Wonderlic score 17 interpretation
- Wonderlic score 20 interpretation
- Wonderlic score 21 interpretation
- Wonderlic score 24 interpretation
- Wonderlic score 28 interpretation
- Wonderlic score 30 interpretation
- Wonderlic score 35 interpretation
- Wonderlic score 40 interpretation
- Wonderlic score 50 interpretation
Frequently Asked Questions
What's the average Wonderlic score?
21 is the population mean. The standard deviation is about 7, so roughly 68% of test-takers score between 14 and 28.
What's a good Wonderlic score?
It depends on context. For competitive office hiring, 25+ is often the floor. For cognitively demanding roles (programmers, attorneys), 28–30+ is competitive. For NFL Combine purposes, 24 is the average.
How does the Wonderlic convert to IQ?
The publisher's rough conversion: Wonderlic 21 ≈ IQ 100; 30 ≈ IQ 120; 35 ≈ IQ 130. The Wonderlic is speeded, so the conversion is approximate.
Can I prepare for the Wonderlic?
Yes — most first-time takers gain 4–8 points just from format familiarity. Drilling mental arithmetic, vocabulary via analogies, and the 14-second-per-item pacing are the highest-leverage practices.
Why a 12-minute time limit?
The 12-minute limit forces the speed-vs-accuracy trade-off that's central to the test. Most takers don't finish all 50 items; that's by design.
Is the Wonderlic the same as IQ?
No. The Wonderlic measures speed plus reasoning under heavy time pressure. Clinical IQ tests (WAIS-IV, Stanford-Binet) are longer, untimed, and produce multi-index profiles. The Wonderlic correlates strongly with IQ but is not equivalent.
How rare is a perfect 50?
Less than 0.1% of test-takers reach 50. Pat McInally's 1975 NFL Combine 50 is the most famous documented example.
What's the lowest acceptable Wonderlic score?
There's no universal minimum; recruiters set their own thresholds. Skilled-trade roles often use 17–19; office-management 25+; selective professional roles 28+.