Random Number 1 to 30
Pick a random number from 1 to 30 — ideal for selecting a random day of the month, classroom numbering, or medium-sized group picks. Each number has a 3.33% chance of being selected, providing fair representation across all thirty options.
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History
Common Uses
- ✓ Random day of the month (30-day months)
- ✓ Classroom picks for medium-sized classes
- ✓ Survey sampling selections
- ✓ Sports team roster numbers
- ✓ Appointment date selection
Frequently Asked Questions
Can I use this to pick a random day of the month?
Yes — for months with 30 days (April, June, September, November), this perfectly covers all possible dates. For 31-day months, change the maximum to 31 on our homepage. For February, use 28 or 29.
What is the probability of each number from 1 to 30?
Each number has an equal 3.33% probability (exactly 1/30). Our cryptographic random number generator guarantees uniform distribution with no bias toward any particular number.
Can I type a custom count, like 6 numbers between 1 and 30 at once?
Yes — the "How many?" box accepts any count from 1 to 1,000 (type 6, 25, 500…), and the quick buttons fill common values. Turn on "No duplicates" when every number must be unique.
How many possible results are there in the 1 to 30 range?
Exactly 30 (counting both 1 and 30). Each has an identical 1-in-30 chance (3.33%) of appearing on every draw, independent of previous results.
Are my generated numbers stored or logged?
No. Numbers are generated locally in your browser with crypto.getRandomValues() and are never sent to, or stored on, any server. Click Clear or reload the page and they are gone.