Know the odds
Probability, made playable.
Expected total7
Chance2.8%
Rolls this session0
D4 roller
Roll a d4, online and free.
A dedicated four-sided dice roller for spell and weapon damage, healing rolls, and every effect that calls for a 1d4 — with instant modifier and multi-dice support, and no die to read from an awkward angle.
🔥 0-day streak
ROLL CONFIGURATION1d4
Share a room and everyone sees the same rolls live — no more "did you actually roll that?"
Room
total—
Try 1d4+1 (Magic Missile), 2d4+2 (potion), or 5d4 (Sleep).
Why a dedicated d4 roller
The d4 is the smallest polyhedral die, and the one physical dice sets make hardest to use: a tetrahedron lands point-up, so you read the result off the corner or the base rather than a face. On screen that friction disappears — the number is just there. This page keeps a d4 one tap away for the rolls that need it most: dagger and dart damage, Magic Missile (1d4+1 per dart), healing potions (2d4+2), Guidance, Bardic Inspiration, and the classic 5d4 for how many hit points a Sleep spell drops.
Every result uses a uniform random draw across all four faces, so each of 1–4 comes up 25% of the time — the same as a perfectly balanced physical die. Want the math on stacking multiple dice or adding modifiers? The dice probability guide walks through expected value and why 2d4 isn’t flat. For the full seven-die set, use the D&D dice roller, or the main roller for any custom notation.
Frequently asked questions
How do I roll a d4 online?
Use the roller above — it defaults to a single d4. Click "Roll dice", press space, or pick a preset. Type notation like 2d4 or 1d4+1 for multiple dice or a modifier.
What is a d4 used for?
In D&D and most tabletop RPGs the d4 rolls small weapon damage (daggers, darts), damage for spells like Magic Missile (1d4+1 per dart), healing from potions (2d4+2), and effects such as Bardic Inspiration or Guidance. It is also the die for Sleep (5d4 hit points affected).
What are the odds on a d4?
A fair d4 gives each face — 1, 2, 3, 4 — an equal 25% chance on every roll. The average (expected value) of a single d4 is 2.5. Rolling more than one, like 2d4, clusters the total toward the middle instead of staying flat.
Why is the d4 so hard to read?
A physical d4 is a tetrahedron with no face pointing up, so the result is read from the numbers around the top point (or along the bottom edge, depending on the die). It is also the "caltrop" die — the one that hurts most to step on. An on-screen d4 sidesteps both problems by just showing the number.
Can I roll a d4 with a modifier?
Yes. Type notation like 1d4+1 to add 1 to the result, or 2d4+2 for a healing potion. Modifiers are added once to the final total, not to each die.