About This Passive Score Tool
Why Passive Perception Matters
Passive perception is a quiet score. It helps a guide notice what a character might see, hear, smell, or sense without asking for a roll. This calculator turns that rule into a clear breakdown. It starts with ten. Then it adds the character's Wisdom modifier. It also adds any Perception training, expertise, special feature, magic item, or table modifier. The final number can be compared with a hidden creature's Stealth result, a trap difficulty, or a secret clue difficulty.
Advanced Options
The tool supports common play cases. Choose no training, half training, proficiency, or expertise. Half training can represent broad skill features. Expertise doubles the proficiency bonus before the score is added. Advantage on a passive check is handled as a plus five. Disadvantage is handled as a minus five. Observant can add another plus five when your table applies that feat. Custom bonuses and penalties cover dim light, noise, distance, tools, spells, traits, and rulings.
A passive score is not a replacement for play. It is a shortcut. It keeps exploration fast when characters are not actively rolling. It also gives the guide a fair target during ambushes. A high score may reveal footsteps, breathing, moving shadows, loose stones, or strange smells. A low score may miss them until the scene changes. Use the result as a steady awareness number, not as automatic knowledge of every secret.
Reading The Result
The DC comparison is included for fast rulings. Enter the stealth result or target DC. The calculator reports the margin. A margin of zero or more means the character notices the clue under the entered conditions. A negative margin means the character misses it unless another rule changes the situation. This makes group scouting easier.
Use the notes field for scene details. Record darkness, cover, marching order, distance, weather, doors, walls, and distractions. Export the result for session notes. The CSV file is useful for spreadsheets. The PDF file is useful for printable character references. Check the table examples to understand how each option changes the final score. For stronger records, save one result per character. Compare scouts, guards, familiars, and monsters side by side during watches and dungeon travel.