Roll a D1000: Thousand Sided Dice Roller
This free d1000 roller is for game masters and players who need a number from 1 to 1000, the kind of roll a large random table asks for. Tap to roll, add more d1000s if you want a handful, and type a modifier when a note calls for one. Each result is equally likely at 0.1%.
Tap the die to roll 1d1000. Space and Enter work too.
Average for 1d1000: 500.5 (before you roll)
How to use the d1000 roller
Tap to roll. Press the big die and the roller shows a number from 1 to 1000. Space and Enter work too once the page has focus, unless you are typing in a box.
Set the count and modifier. One d1000 is the default. Raise the count to roll several at once, then type a modifier to add or subtract after the dice are totaled.
Read every face. When you roll more than one d1000, each result appears under the total. The average for your current notation is shown before you roll, so one d1000 previews as 500.5.
The main DnD dice roller also accepts 1d1000, because its typed notation allows up to 1000 sides. Use that page when you want to mix this die with other notation. For a plain 1 to 100 roll, open the d100 roller.
What a d1000 is used for
A d1000 is a thousand sided roll in notation form. People ask for it when a table or generator is numbered 1 to 1000, which gives each row a 0.1% slice instead of the 1% slice of a percentile die.
It is not the die you roll to attack, to make a saving throw or to deal weapon damage. Those jobs belong to the d20 and to the smaller damage dice. Reach for a d1000 when you need a wide random index, then look the number up in the chart your group already uses.
This page does not reprint any official table. Roll here and compare the result to the list in your book, document or notes.
How to roll a physical d1000
Almost nobody owns a thousand sided object that rolls fairly. The practical method is three ten sided dice read as hundreds, tens and ones, just as two d10s make a d100. If the dice show 7, 4 and 2, the result is 742. If they show 0, 0 and 0, the result is 1000, not zero.
That reading question is the same one percentile dice have, with one extra place. A virtual d1000 answers with a single number from 1 to 1000.
Average d1000 roll and odds
The average of one d1000 is 500.5. Each result from 1 to 1000 has the same 0.1% chance. A band such as 1 to 50 therefore comes up 5% of the time, and a single named row comes up 0.1% of the time.
Because the spread is flat, there is no most common result the way 7 is the most common 2d6 total. Width on the table is what makes one outcome common and another rare. A nearby cousin, the d100 roller, works the same way on a 1 to 100 scale.
Virtual dice vs three physical d10s
Three physical d10s are fine if you like watching hundreds, tens and ones land separately. They also create more chances to mix up which die is which. A virtual thousand sided roller keeps the lookup moving with one clear result.
Each roll here uses your browser's cryptographic random number generator, with extra values thrown out so no result is favored. See the about page for the method, or the dice roller FAQ for more on randomness and privacy.
More than a d1000
The rest of a standard set has its own pages: the d4 roller, d6 roller, d8 roller, d10 roller, d12 roller, d20 roller and d100 roller. Smaller uncommon sizes live on the d2 and d3 pages. Ability scores still use d6s on the stat roller.
d1000 roller FAQ
Is this d1000 roller free?
Yes. It is free, with no ads and no sign up. Open the page on any device and roll.
What is the average d1000 roll?
The average of one d1000 is 500.5, which is (1 + 1000) divided by 2. Each result from 1 to 1000 has a 0.1% chance.
How do you roll a d1000 with physical dice?
Use three ten sided dice as hundreds, tens and ones, the same idea as a percentile pair with one extra die. If all three show 0, the result is 1000, not zero. This roller returns 1 through 1000 directly.
What is a d1000 used for?
A thousand sided roll is for large random tables and generators that need more room than a d100. It is not a standard attack or damage die. This page does not reprint any official table.
Is a d1000 the largest die the main roller allows?
Yes. The main dice roller accepts any size from 2 to 1000 sides, so 1d1000 is the top of that range. This page is the dedicated roller for that size.
Is the d1000 roll truly random?
Each dice roll draws random numbers from your browser's cryptographic generator. Values that would favor a result are thrown out and drawn again, so every number from 1 to 1000 has the same 0.1% chance.
See the Nat20 Roller FAQ for more on notation, advantage and how rolls stay random.