Dice Roller

Basic Dice

The standard seven polyhedrals. Write as NdS where N is the number of dice and S is the number of sides.

Bonuses

Add or subtract a fixed value with +N or -N at the end of the expression.

Keep Highest / Lowest

Roll extra dice and keep only some. Use khN to keep the highest N dice, or klN to keep the lowest N. This is how advantage and disadvantage work in 5e.

Drop Highest / Lowest

Roll extra dice and discard some. Use dlN to drop the lowest N dice, or dhN to drop the highest N.

Reroll Below (Once)

Use rbN to reroll any dice that land below N, but only once per die. This is the Halfling Luck trait, rerolling natural 1s only the first time.

Reroll Below (Multiple)

Use rmN to keep rerolling dice below N until all dice show at least N. Unlike rb, this continues until the condition is satisfied.

Minimum Value

Use mN to treat any die result below N as if it were N. This is how Reliable Talent works — you can't roll below 10.

Reroll Minimum Total

Use rmtN to reroll all dice if the total (after other modifiers) is below N. Useful for ability score generation where you want to guarantee a minimum result.

Constraints

Use label:rmtN to reroll all dice with that label if their combined total is below N. Use *:rmtN to constrain the total of all dice.

Labels

Prefix an expression with label: to group dice by damage type or other category. Separate multiple expressions with spaces.

Complex Examples

Combine modifiers for advanced rolls. Modifiers are applied left to right before the bonus, so ordering matters.