D10 dice roller

A 10-sided die, no need to look under the table

This page shows the dice roller already set to a 10-sided die, the d10. One click on "Roll the dice" or on the die, or a tap on the space bar, and a number from 1 to 10 appears. The result is drawn by your browser's cryptographic random number generator: every side has the same chance and nothing leaves your device.

Up to 20 dice can be rolled together, with their total. The "Number of sides" field and the "Quick picks" buttons let you switch dice, and "Latest rolls" lists your last 12 results.

What is a d10 used for?

The d10 is not a Platonic solid: it is a pentagonal trapezohedron, ten kite-shaped faces meeting at two points. A physical d10 is numbered 0 to 9, and the 0 reads as 10. The online version simply shows 1 to 10.

• Rolling a percentage: two d10 rolled together, one for tens and one for units, give a number from 1 to 100.
• Dice pools: some tabletop role-playing games have you roll a handful of d10 and count those that reach a target, for example 8 or higher.
• Picking a digit: read the 10 as a 0 and you get a digit from 0 to 9, useful for building a random code or number.
• Giving a score out of 10 to a movie or a dish when nobody wants to decide.

The odds with a d10

Each side has a 1 in 10 chance, or 10%. The average is (1 + 2 + … + 10) ÷ 10 = 55 ÷ 10 = 5.5. A result of 8 or higher has a 30% chance.

With a pool of 5d10, the probability of at least one 10 is 1 − 0.9⁵ = 1 − 0.59049 ≈ 40.95%.

Frequently asked questions

How do I count successes on several d10?

Set the "Number of dice", roll, then count the dice above your target yourself: the tool shows each value and the sum, not the number of successes.

Do I need two d10 for a percentage?

Not here: the site's 100-sided die draws a number from 1 to 100 directly, with the same chance for every value.