1d4

A 1d4 is a four-sided die used in tabletop role-playing games. It is shaped as a regular tetrahedron, with four congruent triangular faces. Each face carries a single digit from 1 to 4. Because all faces are equally likely, a roll yields each value with probability 1/4, and the expected value is 2.5.

Common uses: In many games, a 1d4 is used to determine small amounts of damage, healing, or other minor random effects. It is commonly included in standard dice sets and appears in various game systems as a source of small numerical results.

Materials and variants: 1d4 dice are usually made of plastic or resin, but may also be produced in metal, wood, or other materials. They are often printed or engraved with digits, and some are translucent or color-coded. Some dice feature alternative numbering schemes or fonts, though the most common labeling is 1–4.

Manufacture and distribution: 1d4 dice are widely produced by major game companies and independent dice makers. They are sold individually or as part of multi-dice sets.

See also: dice, polyhedral dice.