Strong Interest Inventory: The Complete Guide (2026)

The Strong Interest Inventory was originally developed by E.K. Strong in 1927 and has been revised multiple times since. The current version (Strong 2012) measures six dimensions that together produce a far richer picture of your career interests than a basic Holland Code test alone.

The Strong is worth paying for in three scenarios:

• You are making a high-stakes career change (leaving a senior role, returning to school, entering a licensed profession) and want the most comprehensive data available.
• You are working with a career counselor who is certified to interpret Strong results. The report is significantly more useful when a trained professional helps you apply it.
• Free tools have produced inconsistent results and you want the deeper occupational norm comparisons that the Strong’s 130-occupation database provides.

If you are in early-stage career exploration, doing preliminary research, or simply want to understand your career fit better, a free tool like DreamJob Matcher or the O*NET Interest Profiler will serve you well without the cost.

1. Contact a certified career counselor or your college/university career center. Most college career centers offer the Strong to enrolled students for free or at reduced cost.
2. Complete the 291-item assessment online (approximately 35-45 minutes).
3. Receive your Strong Profile Report, which includes GOT, BIS, Personal Style Scales, and occupational scale results.
4. Schedule an interpretation session with your counselor to understand how your results apply to your specific situation.
5. Use the results alongside other assessment data (personality, skills, values) to build a complete career planning picture.

Last updated: May 2026