IndoorComfortKit Indoor comfort calculators
Choose a tool for the question in front of you. Inputs stay in the browser, and each estimate keeps its formulas and limits close by.
Understand a room reading
Humidity, dew point and site-defined watch signals. Use your own measurements; these tools do not measure the room.
Indoor Comfort Score Calculator
Combine room temperature, relative humidity, and dew point into a practical comfort score for everyday rooms.
Needs: room temperature and relative humidity.
Indoor Dew Point Calculator
Calculate dew point from room temperature and relative humidity, then see what it means for comfort and window condensation.
Needs: room temperature and relative humidity.
Indoor Humidity Calculator
Check whether a room RH reading is dry, comfortable, humid, or high, with 30-50% target guidance and next-step moisture checks.
Needs: relative humidity reading.
Room Moisture Watch Calculator
Use humidity and dew point to flag room moisture conditions where dampness may linger around windows, walls, closets, or basements.
Needs: room temperature and relative humidity.
Compare equipment sizes
Small-room planning estimates before comparing product labels and the conditions in the actual room.
AC BTU Calculator for Room Size
Estimate room AC BTU from square feet, ceiling height, sun, people, and kitchen heat, with a room-size BTU chart and examples.
Needs: room area, ceiling height, sun, occupants, and kitchen heat.
Dehumidifier Size Calculator
Find what size dehumidifier you may need in pints per day based on room area and dampness level, with basement and bedroom examples.
Needs: room area and dampness level.
Before using these calculators
Place the hygrometer away from vents, direct sun, damp towels, and exterior glass. Let it settle before reading, then repeat measurements in the same location when a pattern matters.
These calculators work best when you use measured room data instead of guesses. For repeated problems, compare the same room over several days and check nearby rooms before buying equipment.
Calculator results are planning estimates. They do not inspect hidden materials, approve equipment, or replace medical, HVAC, electrical, building, or safety guidance.