Random Sampling for Research
Generate random samples, assign random IDs, or select a random subset from a numbered dataset.
🔒 Every number uses your browser’s cryptographically-secure randomness (crypto.getRandomValues) — genuinely fair, not the predictable Math.random(). Nothing is sent anywhere.
Research tips
For random sampling from N records, generate a list of K unique numbers in the range 1–N. Those row numbers become your sample.
Unique mode ensures no record is sampled twice — equivalent to sampling without replacement, which is standard in most research designs.
Cryptographically secure randomness produces proper uniform distributions, suitable for scientific and statistical sampling.
Export the list with "Copy all" to paste your random sample indices into Excel, R, Python, or your analysis tool.
כיצד זה עובד
למה לבחור בנו?
Also check out…
Generate Lottery Numbers
Pick random lottery numbers for Powerball, Mega Mi
Pick a Random Winner for Giveaways
Fairly select a random winner from a numbered entr
Roll Dice for Tabletop Games
Roll any combination of dice — d4, d6, d8, d10, d1
Generate Test Data Random Numbers
Create large lists of random numbers for testing a