IQ to ASVAB AFQT Score Converter

Convert IQ ↔ ASVAB AFQT

How the conversion works

IQ and ASVAB AFQT 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.
• ASVAB AFQT: reported as a percentile rank against the 1997 reference sample of 18-23-year-old Americans, so it spans 1-99 with a built-in median of 50. The underlying ASVAB sub-test scores correlate with IQ at around 0.8-0.9.

IQ-equivalent = (target − mean_target) / SD_target × 15 + 100
target-equivalent = (IQ − 100) / 15 × SD_target + mean_target

Common IQ ↔ ASVAB AFQT reference table

Important caveats

• The AFQT is essentially a percentile rank on the cognitive composite of the ASVAB. Because the AFQT is reported as a percentile rather than a standard score, the conversion is direct via the IQ-to-percentile mapping. Military branches have AFQT minimums (e.g., Army 31, Marines 32, Navy 35, Air Force 36) that correspond to IQ ranges roughly 85-90 and above.
• 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.

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IQ percentile calculator · IQ to Wonderlic converter · IQ to SAT converter · IQ score chart