Customer interview sample size

    How Many Customer Interviews for Validation? | Interview Sample Size

    Updated:
    3 min read

    You need 30-100 customer interviews for solid business validation. The minimum is 30 interviews to identify patterns, but 50-100 gives statistical confidence. For B2B: 30-50 interviews is sufficient. For B2C: aim for 75-100. Quality matters more than quantity.

    Key Customer Interview Sample Size Takeaways

    • Minimum viable: 30 interviews to see clear patterns
    • Recommended: 50-100 interviews for statistical confidence
    • B2B products: 30-50 interviews is sufficient
    • B2C products: 75-100 interviews recommended
    • Quality > Quantity: Target actual customers, not friends/family
    • Best practice: Combine interviews with AI validation tools
    Related concepts: interview sample size, customer discovery, validation research, interview number, b2b interviews, b2c interviews, qualitative research, pattern recognition, customer research, validation methodology.

    Expert Tips

    Quality over quantity

    10 interviews with actual target customers beat 50 interviews with convenient contacts

    Stop when you hear patterns

    Saturation occurs when 3-4 consecutive interviews reveal no new insights

    Related Questions

    How to conduct customer interviews?

    How to validate a business idea?

    What questions to ask in validation interviews?

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