Convert IQ ↔ Wonderlic
How the conversion works
IQ and Wonderlic scores are normalised on bell-curve distributions. The conversion maps a person's standing in one distribution to the equivalent standing in the other.
- IQ: mean 100, standard deviation 15.
- Wonderlic Personnel Test: mean ≈ 21, standard deviation ≈ 7, based on Wonderlic Inc. normative data. The Wonderlic is a 12-minute, 50-item test of general cognitive ability and has been used in employment screening for over 80 years.
IQ-equivalent = (target − meantarget) / SDtarget × 15 + 100
target-equivalent = (IQ − 100) / 15 × SDtarget + meantarget
Common IQ ↔ Wonderlic reference table
| IQ | Wonderlic | Percentile |
|---|---|---|
| 80 | 14 | ~9th |
| 90 | 17 | ~25th |
| 100 | 21 | ~50th |
| 110 | 26 | ~75th |
| 120 | 30 | ~91st |
| 130 | 35 | ~98th |
| 140 | 40 | ~99.6th |
Important caveats
- IQ-Wonderlic correlation is around 0.85, meaning the Wonderlic is essentially a brief IQ test with measurement error. The Wonderlic correlates with the WAIS at around 0.92 in many studies.
- Extreme-tail conversions are less reliable because both tests have fewer calibration cases there.
- No score entered here is stored, submitted, or connected to an account.
Related tools
IQ percentile calculator · IQ to SAT converter · IQ to ACT converter · IQ score chart
Cite this converter
Editorial content and curation are released under CC BY-SA 4.0. This converter is part of the What's Your IQ educational resources.