D30 Dice Roller
A thirty-sided die, a favourite for large random tables.
Ready to roll 1d30
Quantity
Modifier
1d30 · Thirty-Sided Die
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What is a D30?
A D30 is a thirty-sided die. It has 30 faces numbered 1 to 30, and on a fair die each one is equally likely, so any single face comes up 3.33% of the time. You will usually see it used for random tables and days of the month.
- Sides
- 30
- Average roll
- 15.500000000000002
- Lowest
- 1
- Highest
- 30
D30 odds
Every face on a D30 has the same 3.33% chance. Rolling the die more than once does not change that. Each roll is independent, so a run of low numbers tells you nothing about what comes next.
Across many rolls the average settles near 15.500000000000002, which is the number to use when you are comparing this die against another.