D10 Rolls Made Clear: Reading Standard and Percentile Dice

A D10 is a ten-sided die used in tabletop games for a range of rolls. It can appear in damage expressions, random tables, and percentile rolls. Reading one is straightforward once you identify the numbering style and understand whether the die is being used by itself or paired with another ten-sided die. Always follow the rule or table that asked for the roll.

What is a D10?

The notation d10 means a ten-sided die. Like other polyhedral dice, the letter d is followed by the number of sides. A D10 may be numbered 0 through 9, or it may be marked with tens such as 00, 10, 20, and so on when it is intended to serve as a percentile die. These two styles can look similar at a glance, so check the faces before rolling.

In D&D and many other RPGs, dice notation also tells you how many dice to roll. For example, 2d10 means roll two ten-sided dice and add the results if the rule calls for a total. A D10 can also be part of a D100 roll. These uses are different: one D10 may generate a single result, while two dice can represent a tens digit and a ones digit.

How to read a standard D10

First, confirm the die’s numbering. If it has the digits 0 through 9 and is used for a 1-to-10 result, many game tables treat the face marked 0 as 10. However, a rule may use a different convention, or the die may be used as one digit in a percentile pair. Read the notation and instructions attached to the roll rather than assuming that zero always means the same thing.

Then place the die on a flat surface and read the number at the top according to the manufacturer’s design. Some D10s have long, narrow faces and can settle at an angle; the visible top face or clearly oriented number is the result. If the number is upside down or difficult to distinguish, pick the die up only if your table’s usual practice allows it, then agree on how to read that style consistently.

For damage or another expression such as 1d10, roll one die and apply the game’s stated rule. For 3d10, roll three dice and add them if the expression asks for a total. Do not add the results automatically if the roll is being used to select a range, generate a percentile number, or read separate values.

How to use percentile dice for D100 rolls

The common method for rolling a D100 uses two ten-sided dice numbered 0 through 9. Before rolling, choose one die as the tens digit and the other as the ones digit. This decision prevents confusion after the dice land. If the tens die shows 7 and the ones die shows 1, the result is 71. If the dice are color-coded or one die is marked in tens, that visual distinction can make the result easier to read.

Some percentile sets use a die marked 00, 10, 20, and so on for the tens place, paired with a regular 0-to-9 die for the ones place. A roll of 70 and 1 reads as 71. In the D&D Basic Rules, two zeroes represent 100. A zero on the tens die paired with a 6 on the ones die reads as 6, while a tens result of 40 with a ones result of 0 reads as 40.

Percentile tables sometimes describe a range from 1 to 100, while the dice mechanics use digit combinations. The rules tell you how to interpret the result, including the special 100 result. When a group uses a different table or system, follow that system’s stated convention. You can also say the two digits aloud—“seventy-one”—to make the result unambiguous.

What are D10 dice used for?

D10s can determine damage, table results, random events, or another quantity specified by a game. Two D10s are often used for percentile results, where one die represents tens and the other represents ones. The d10 notation may also appear in a roll with multiple dice, such as 4d10. That expression does not automatically mean a percentile roll; read the rule around it.

In D&D, dice of different sizes are used for different kinds of effects. A d20 commonly resolves uncertain tests, while other dice can determine damage or random outcomes. Which die you roll depends on the game’s rule, not on a general assumption that a D10 is for one specific kind of action. If you are unsure, look up the feature, spell, table, or weapon that called for the roll.

Common mistakes when reading a D10

• Mixing up a regular D10 and percentile D10: Check whether the face labels are 0–9 or 00–90.
• Choosing the tens die after rolling: Select which die is tens before the throw.
• Reading 00 as zero every time: In a percentile pair, D&D rules treat two zeroes as 100.
• Adding digits that should stay separate: A D100 roll combines place values; it is not usually a sum.
• Assuming a universal zero rule: The correct reading depends on the roll’s instructions and game system.

For a new player, it can help to keep the tens die a different color from the ones die and practice several examples before a session. Write “tens” and “ones” beside the dice while learning. The habit is useful even when the set is not color-coded.

Choose and care for a D10

Look for clear numerals, a readable contrast between the number and die body, and a size that works with your table. If you want to use a D10 in a percentile pair, choose a matching second die and decide which one represents each place. A set with one standard die and one tens-marked die is easy for many tables to tell apart.

Roll D10s on a flat area where they can settle without falling off the table. Keep them in a pouch or compartment with the rest of your set. If the die has a special finish or moving insert, use the maker’s care instructions. Store it away from heavier dice if its surface could be scratched.

D10 and percentile dice: quick guide

A regular D10 is a ten-sided die; a percentile roll combines two dice to create a result from 1 to 100 under the game’s stated convention. Identify the faces, assign tens and ones in advance, and read the result according to the rule. That is usually all a player needs to get started.

The official D&D Basic Rules explain common dice notation and the percentile method. If your group uses another RPG or a custom table, consult its instructions because notation and conventions can vary.