D100 Dice Roller - Percentile Die Simulator

Your details

How many d100 dice to roll at once (1 to 20).
A flat number added to (or subtracted from) the total roll. Common in tabletop RPGs.
The minimum total you need. The calculator shows the probability of meeting or beating this.
Different seeds produce different roll results. Increment this to simulate a fresh roll.
Total (with modifier)Target missed
26

Sum of all dice results plus the modifier

Dice sum (before modifier)26
Individual results26
Highest die26
Lowest die26
Expected total50.5
Standard deviation28.87
Chance to hit target51%
Target met?No - target missed
51%
Unlikely (< 25%)<25%Below average (25-50%)25%-50%Better than even (50-75%)50%-75%Favorable (> 75%)75%+

You rolled 26 - 24 short of the target (50).

  • You rolled 26, which misses your target of 50.
  • The expected total for 1d100 is 50.5, so this roll is below average.
  • In any given roll, there is a 51.0% chance of reaching 50 or higher.

Next stepFor tabletop RPGs, a single d100 roll gives a clean percentage chance: every 1-point increase in your target cuts your success chance by exactly 1%.

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