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Quick Answer • customer interview sample size
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.
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