D&D Passive Perception Calculator – 5e Passive Skills & Stealth Analyzer
👁️ D&D Passive Perception Calculator
Calculate passive Perception, Investigation & Insight for 5e — plus Party Mode and Stealth Analyzer
Quick Presets
Ability Scores
Proficiency Bonus: +2
Proficiency Options
Perception:
Investigation:
Insight:
Conditions & Feats
Advantage on Perception:
Passive Perception
—
10 + WIS mod
Passive Investigation
—
10 + INT mod
Passive Insight
—
10 + WIS mod
Observant Bonus
+0
Feat not active
🗡 Stealth DC for Monsters
Calculate your passive Perception first — monsters must beat that score on their Stealth check to sneak past you.
Quick Party Presets
Party Members (up to 6)
Stealth Check Analyzer
Enter a monster or character's Stealth bonus to see their chance of sneaking past various passive Perception scores.
Chance to Sneak Past Passive Perception
* Based on d20 roll. Advantage approximated as 1−(fail rate)^2. Results are probabilities, not guarantees.
📊 Reference: WIS Score vs Passive Perception
| WIS Score | WIS Mod | No Proficiency | Proficient (+2) | Proficient (+4) | Proficient (+6) | Expertise (+4) | Expertise (+8) | Expertise (+12) |
|---|
📖 Passive Skill Breakdown
👁️ Passive Perception
10 + WIS mod + prof (if any) + adv/dis
Used by the DM to determine if you notice hidden creatures, traps, or objects without actively searching. The most commonly referenced passive skill in 5e.
🔍 Passive Investigation
10 + INT mod + prof (if any) + adv/dis
Used when you might notice clues, hidden doors, or puzzle elements without actively examining them. Also boosted by the Observant feat.
🧠 Passive Insight
10 + WIS mod + prof (if any) + adv/dis
Used by the DM to determine if you can tell when someone is lying or sense their true intentions passively, without explicitly reading them.
💡 How Passive Scores Work
Passive scores represent what a character notices without actively trying. The formula is 10 + all modifiers that would normally apply to the check. Advantage adds +5; disadvantage subtracts 5. The DM uses these scores secretly — you don't roll, so high passive scores reward consistent alertness.
🎯 Observant Feat & Expertise Tips
The Observant feat (Player's Handbook) adds +5 to passive Perception and Investigation, making it one of the strongest perception upgrades available. Expertise in Perception (available to Rogues and Bards) doubles the proficiency bonus, potentially giving passive scores of 25+ at high levels. Stack both for a near-impossible-to-sneak-past sentinel.
Passive perception is one of those small parts of a D&D character sheet that commonly causes confusion. It measures how well you notice details in your surroundings. That can include listening, spotting hidden enemies or finding ambushes.
Passive perception measures your attention without needing to roll dice.
How Passive Perception Works
Rather than usual perception rolls with a d20, passive perception is a fixed value that works behind the scenes. The DM uses it to figure out what a character naturally notices during their journey through the world. Think about it as entering a room and naturally observing around you rather than actively searching or checking.
So how do you count it? Passive perception equals 10 plus your Wisdom modifier. If you have skill in Perception, you add your proficiency bonus.
For instance, a 1st-level character with Wisdom 15 and skill in Perception will have passive perception of 14. Advantage adds +5, disadvantage subracts -5.
Here is a practical example. If something hidden in a room requires 16 to be found, a character with passive perception 17 will immediately notice it without a roll. A character with 15?
They will have to actively search and roll.
Passive perception helps the DM quietly decide what information is noticed, without warning the players about danger or secrets. That stops giving meta-knowledge that could hurt the tension and surprise. Picture three characters at camp, busy with other things, but naturally careful about their surroundings, they use passive perception.
The DM decides weather a character is in a good position to notice something. If you must be within 5 feet of a secret door to have a chance, and you never go near it, the passive perception does not matter.
Some DMs treat passive perception as a minimum value. A character that is not unconscious or petrified cannot reach a lower result even with an active roll. If a character has really high perception, you commonly do not need to ask for a roll for clear reasons.
Passive perception is a tool of the DM, who has the last word about its use. Interesting side note: the 2024 Player’s Handbook removed allreferences to passive perception or passive skills.
