🎲 Random Number Generator 1–20
The 1–20 range is famous as the d20 — the iconic 20-sided die used in Dungeons & Dragons and countless tabletop RPGs. Click Generate to roll a virtual d20 instantly, no physical die required.
Your d20 roll (1–20)
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Need a custom range? Use the full Random Number Generator to set any min and max.
Frequently Asked Questions
The d20 is a 20-sided die used predominantly in tabletop role-playing games like Dungeons & Dragons (D&D). It determines the outcome of almost every action — attack rolls, skill checks, and saving throws. Rolling a 20 (a "natural 20") is a critical success; rolling a 1 is a critical failure.
No. Each number from 1 to 20 has exactly a 5% chance of being selected. A natural 20 and a natural 1 are equally likely — just like a fair physical d20.
Yes. This generator works as a quick d20 roller for online D&D, Pathfinder, or any TTRPG session. Bookmark the page and share the link with your group so everyone uses the same tool and trusts the result.
Beyond gaming, this range is used in classroom activities (numbering students 1–20 and picking at random), flashcard drilling, trivia question selection from a set of 20, physical fitness routines (pick a random exercise number), and creative writing prompts.
A digital d20 uses a computer's pseudo-random number generator rather than physical gravity and geometry. Both aim for uniform distribution across 20 outcomes. The digital version is faster, never gets lost, and doesn't require a table — ideal for online play.