Van Westendorp Price Sensitivity Calculator
Paste your survey responses into the four fields below. The calculator finds your acceptable price range, optimal price point, and indifference price — instantly.
Van Westendorp Price Sensitivity Meter
Paste your survey responses to find the optimal price range
Survey Data
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The Van Westendorp Price Sensitivity Meter asks each respondent four questions about the same product. Not "what would you pay?" — four distinct questions that reveal the edges of their acceptable range.
Too Cheap
"At what price would this be so cheap you'd question the quality?" The lower threshold. Below this price, respondents doubt the product is legitimate or well-made. As price increases, fewer people hold this concern — so this curve descends.
Good Value
"At what price would this be a bargain — good value for what it is?" Not the ideal price, the floor of perceived value. As price rises above this point, fewer respondents consider it a deal — another descending curve.
Getting Expensive
"At what price would this start to feel expensive, but you'd still consider buying it?" The onset of resistance. As price increases, more people reach this threshold — an ascending curve.
Too Expensive
"At what price would this be too expensive — you'd definitely not buy it?" The hard ceiling. As price rises, more respondents cross it — also ascending.
The four curves create two pairs of intersections. Those intersections are your output.
Common questions
What is the Van Westendorp Price Sensitivity Meter?
The Van Westendorp PSM is a pricing research methodology developed by Dutch economist Peter van Westendorp in 1976. Instead of asking respondents to name one acceptable price, it asks four questions that map the edges of their acceptable range. The intersection points of the resulting cumulative frequency curves produce four key price points: PMC (floor), IDP (indifference), OPP (optimal), and PME (ceiling). It's one of the most widely used quantitative pricing research methods — standard in brand research, product pricing studies, and subscription pricing.
How many respondents do I need for a Van Westendorp study?
A minimum of 150 respondents produces reliable intersection curves. 300–500 respondents give you tighter confidence intervals and more stable intersection points — especially useful when your PMC and PME are close together. For a B2C product in a broad category, 385 respondents at 95% confidence and ±5% margin of error is the standard baseline. Use our sample size calculator to get the exact number for your study parameters.
What's the difference between Van Westendorp and conjoint analysis?
Van Westendorp isolates price as the single variable — it tells you what your market will pay for the product as described. Conjoint analysis shows you how respondents trade off price against features — it tells you what they'd give up to pay less, or what they'd pay more to get. Use Van Westendorp when you need to set or validate a price point for a defined product. Use conjoint when you're making feature decisions alongside pricing and need to understand the trade-off between the two.
What's the difference between IDP and OPP?
Both sit inside the acceptable range, but they measure different things. IDP (Indifference Price Point) is where equal numbers call the price "cheap" and "expensive" — it reflects what your market expects to pay. OPP (Optimal Price Point) is where equal numbers call it "too cheap" and "too expensive" — it minimizes resistance from both ends. OPP is typically slightly higher than IDP. In practice: price at or near OPP to maximize revenue while minimizing walkaway risk. Use IDP as a reference for what feels "normal" in your category.
What should I do with the results?
The acceptable range (PMC to PME) tells you where to play. OPP is your default anchor — it minimizes resistance on both ends. Before finalizing, pressure-test a few scenarios: What happens to margin at OPP vs. a price 15% higher (still inside the range)? Do you have a competitor priced below IDP? Is your cost structure viable at the floor? Van Westendorp gives you the demand-side picture. Combine it with your unit economics and competitive context to make the actual decision.
Can I use this methodology for B2B products?
Yes, with adjustments. The four questions are the same, but your respondents need to be decision-makers or budget-holders for the purchase category — not just any professional. B2B pricing studies typically require more targeted sampling and smaller sample sizes (100–200 is often sufficient when targeting a specific job function and company size). B2B panel responses are priced by targeting criteria in SegmentOS — the more specific the targeting, the higher the per-response cost.