Calculating initiative 5e is the first action you take when a combat round begins, determining turn order based on a d20 roll plus your Dexterity modifier and any relevant features. Rolling initiative before each fight helps you track who acts first and stay consistent across sessions.
Below is a quick reference table that outlines the core steps, optional rules, and edge cases you may encounter in different play contexts.
| Phase | What to Do | Who Acts | Special Notes |
|---|---|---|---|
| Start of Combat | Roll a d20 and add Dexterity modifier | All creatures | Use same roll if surprised and not incapacitated |
| Tied Rolls | Compare Dexterity modifiers | Creatures involved in tie | If still tied, roll off with a bonus to Dex |
| Readied Actions | Declare action and trigger condition | Creature using reaction | Initiative order decides who reacts first |
| Surprised Round | Skip initiative; act in surprise order | Surprised creatures in order | No reactions until surprise ends |
| Joining Mid-Combat | Roll initiative when you enter combat | New creature | DM may place NPCs in existing order |
Rolling Initiative in Combat
Rolling initiative in most games means you grab a d20, add your Dexterity modifier, and compare the result to everyone else at the table. This number becomes your place in the turn order track, so it is worth paying attention to bonuses from class features, spells, or magic items that can raise your roll.
Handling Ties and Edge Cases
When two or more characters roll the same number, you break the tie by comparing Dexterity modifiers, then proficiency bonus if needed. Before starting a session, talk with your DM about house rules for dramatic ties or when multiple NPCs share the same modifiers.
Surprised Rounds and Readied Actions
Surprised Rounds
If your party is surprised, you skip initiative and act in a predetermined order based on how alert each character is, which the DM tracks separately.
Readied Actions
When you ready an action, you keep your spot in initiative but respond only when your trigger occurs, giving you tactical control without changing the basic order.
Optional Rules and DM Advice
Some tables use initiative decks, point-buy systems, or group initiative for NPCs, which can speed up play and reduce dice clutter. Collaborating with your DM on these choices keeps combat fair and fun for everyone at the table.
Optimizing Your Initiative Choices
- Track your Dexterity modifier and relevant bonuses before each roll.
- Discuss optional rules with your DM to avoid surprises at the table.
- Use reminder markers or digital tools if you struggle to remember readied actions.
- Review house rules for surprised rounds so everyone knows when reactions are allowed.
FAQ
Reader questions
Do I roll initiative for summoned creatures and minions?
Yes, each summoned creature rolls its own initiative so the DM can track its actions accurately in each round.
What happens if I forget to roll initiative at the start of combat?
Roll initiative as soon as you remember, and the DM will insert you into the existing order based on the result for that round.
Can a bonus action like the Help action affect initiative rolls?
The Help action does not change your initiative number, but it can give advantage to an attack if you successfully help an ally before your turn.
How does initiative work during an ambush or stealth encounter?
In an ambush, the DM may decide that the party rolls initiative with surprise order, or handles turns narratively until combat starts normally.