Utility Stack
Free random tool
Flip coins, roll dice, add a modifier, and copy a clean random result for games, classrooms, or quick decisions.
Random result
Use the coin section when you need a simple heads-or-tails decision. Choose one flip for a quick answer, or flip multiple times when you want to see a small pattern of outcomes. Use the dice section for tabletop games, classroom probability examples, party games, or quick random scoring. Pick the number of dice, choose the die size, and add a modifier if your game rule needs one.
Dice notation is usually written as NdS, where N is the number of dice and S is the number of sides on each die. For example, 2d6 means two six-sided dice. If you add a modifier, 2d6+3 means roll two six-sided dice and add three to the total.
The fair coin option uses an equal 50 percent chance for heads and tails. The custom option is useful for demonstrations, probability lessons, or game variants where the outcome is intentionally weighted. For ordinary decisions, the fair coin setting is the cleanest choice.
This page is built for casual decisions and games. Do not use it for raffles with legal requirements, security tokens, cryptographic keys, official gambling, compliance-sensitive drawings, or anything that needs an audited random process. For those cases, use a purpose-built system with documented controls.