Conjoint sample size and design planner
Get an immediate, transparent screen of exposure, detectable effects, and respondent burden before building your study.
Study structure
Change the assumptions to screen a proposed conjoint design.
Approximate design information
4,800profile observations
1,200approximate rows per level
5.7 pointsrough 80% power MDE
392rough respondents for a 5-point effect
- The task structure is relatively light, but consent and other survey questions still add time.
Use this as a screening calculation
It assumes balanced exposure and independent rows. Repeated choices, restrictions, clustering, missingness, subgroup analysis, and the final estimator can require a larger sample. Confirm consequential designs with simulation or a methodologist.