Risk Dice Roller

A free online dice roller for the Risk board game. Select up to 3 attack dice and up to 3 defense dice, hit roll, and instantly see the results with automatic loss tracking.

Tap to toggle dices

Tap a die to enable or disable it. The attacker (red) rolls up to 3 dice, and the defender (blue) rolls up to 3 dice. Press Roll to throw. Losses are calculated automatically following standard Risk rules — the highest dice are compared, and ties go to the defender.

Read the Results

After each roll, a number appears below each side's dice. The top number shows how many units that side lost in the current roll. The bottom number is the running total of losses accumulated across all rolls in the session.

Why Each Roll Is Separate?

This dice roller is intentionally designed without a total unit count for attackers or defenders. Each roll is a standalone battle round — you decide on your own board how many troops to commit and when to stop. This keeps the flow close to the physical board game experience and lets you stay in full control of your strategy.

2 vs 3 Defender Dice

In the original Risk rules, the defender rolls a maximum of 2 dice. Some popular variants — including certain European editions and house rules — allow the defender to roll up to 3 dice when defending with 3 or more troops. This roller supports both modes.

With 2 defender dice (classic), the attacker has a statistical edge in large battles — rolling 3v2 repeatedly favors the attacker over time. With 3 defender dice, up to 3 pairs are compared each round, meaning more troops can be lost per roll on both sides. This makes battles resolve faster but shifts the odds significantly toward the defender, making it harder to conquer well-garrisoned territories. Choose whichever variant your group plays — simply tap the defender's third die to enable or disable it.