Roll 1d100
1d100 rolls from 1 to 100 with an average of 50.5. It rolled once when the page loaded; press Roll for another.
Choose your roll
Use a quick die, type notation such as 2d6+3, or configure the dice and modifier separately.
Roll 1d100
Quick rolls
Dice ready
Your next roll lands here.
The total, individual dice, dropped values, and a running history of up to 20 rolls will stay together.
This page rolls a single 100-sided die (1d100) the moment it loads and again every time you press Roll. Results run from 1 to 100 with an average of 50.5. Also written d% or percentile dice, the d100 drives random encounter tables, wild magic surges, and any "roll under" percentage check.
Questions
- What is the average roll of 1d100?
- The average of a single d100 is 50.5: every face from 1 to 100 is equally likely, so the expected value is (1 + 100) divided by 2.
- How do I add a modifier to 1d100?
- Type the full expression in the dice notation field, for example 1d100+3 or 1d100-1, and press Roll notation. The total shown includes the modifier.
- Is this dice roller free?
- Yes. Every tool on Tools and Taverns is free, with no account, signup, or roll limit. The roll runs in your browser and nothing is sent to a server.
- Can I see my previous rolls?
- Yes. The roller keeps your last 20 rolls on screen with the individual dice for each, so a contested result is still there when someone asks what you got.