D&D Initiative Bonus Calculator
Calculate your D&D 5e initiative bonus.
Enter your Dexterity modifier and any bonus features to find your initiative and understand combat order.
What Is Initiative?
At the start of combat, every creature rolls a d20 and adds their initiative bonus. The results are ranked from highest to lowest — this is called the Initiative Order. You act on your turn each round, in that order.
Formula
Initiative Bonus = Dexterity Modifier + Any Additional Bonuses
Common Sources of Initiative Bonuses
| Feature / Feat | Bonus | Source |
|---|---|---|
| Alert Feat | +5 | Feat available at any level |
| Bard: Jack of All Trades | +half PB | Bard level 2 (half proficiency bonus) |
| Barbarian: Feral Instinct | Advantage | Barbarian level 7 |
| Rogue: Inquisitive | +WIS mod | Inquisitive subclass level 3 |
| Order of Scribes Wizard | +WIS mod | Wizard subclass feature |
Advantage on Initiative
Some features grant advantage on initiative — meaning you roll two d20s and take the higher result. This is mathematically equivalent to about a +3–4 bonus on average.
Tiebreakers
If two creatures roll the same initiative, the DM decides the order. Common tiebreaker methods:
- Higher DEX modifier goes first
- Players go before monsters on ties
- Roll again to determine order
Why Initiative Matters
Acting before enemies can be the difference between life and death. A Rogue with high initiative can use Sneak Attack and potentially eliminate a threat before they act. A Wizard who goes first can cast Hold Person and incapacitate enemies for the whole party.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
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