D2 Dice Roller
A two-sided die, the dice equivalent of a coin flip.
Ready to roll 1d2
Quantity
Modifier
1d2 · Two-Sided Die
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What is a D2?
A D2 is a two-sided die. It has 2 faces numbered 1 to 2, and on a fair die each one is equally likely, so any single face comes up 50% of the time. You will usually see it used for coin flips, yes or no decisions and who goes first.
- Sides
- 2
- Average roll
- 1.5
- Lowest
- 1
- Highest
- 2
D2 odds
Every face on a D2 has the same 50% 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 1.5, which is the number to use when you are comparing this die against another.