Roll a D3

Physical three-sided dice are rare, so tables usually roll a d6 and halve it, rounding up (1–2 is 1, 3–4 is 2, 5–6 is 3). That works perfectly; this just skips the arithmetic.

Tap to add a die:

What a d3 is for

  • Warhammer 40,000 and other wargames, where D3 damage and D3 attacks are everywhere
  • Picking one of three options or three players
  • Small random effects in homebrew rules

Want more dice or a modifier? Edit the box, for example 3d3+2.

d3 odds

Each face from 1 to 3 has exactly a 33.3% chance (1 in 3). Average: 2.0.

Roll history

Your results appear here and stay on this device only.

Questions people ask

How do you roll a d3 with a normal die?

Roll a d6 and halve the result, rounding up: 1–2 counts as 1, 3–4 as 2, 5–6 as 3. Each outcome keeps an exact 1 in 3 chance.

What is the average of a d3?

2.

Can I roll 2d3 or d3+1?

Yes. Type it into the box, for example 2d3 or 1d3+1.