How accurate are Kinsa thermometers?

At Kinsa, we take accuracy very seriously. After all, what good is taking a temperature if that measurement is unreliable? 

Kinsa thermometers are designed to be the most accurate around normal body temperatures. For the accuracy details for each of our thermometers, see the table below:


Thermometer Accuracy Range
Kinsa QuickCare ±0.2°F 89.6°F - 109.2°F
±0.1°C 32°C - 42.8°C
Kinsa Smart Ear ±0.4°F 95°F - 107.6°F
±0.2°C 35°c - 42°C
Kinsa Smart Stick ±0.2°F 95°F - 107.6°F
±0.1°C 35°C - 42°C


Note that each person’s temperature can fluctuate significantly depending upon the placement of the thermometer and the time of day. Consult your doctor or pediatrician for advice about how to calculate a normal, baseline temperature while you’re well. You can use that to evaluate whether temperatures you see when you don’t feel well are different than the norm.

To ensure an accurate reading with any of our thermometers, we recommend you avoid eating or drinking any liquids, exercising, taking showers or baths, or smoking for 15 minutes prior to use, as these activities can cause mild elevations in temperature.

Please reference our super helpful instructional articles and videos for the QuickCare, Smart Ear and Smart Stick thermometers for additional tips on how to take temperatures accurately.

For more information about maintaining the accuracy of the Kinsa Smart Ear thermometer, see How to maintain the accuracy of your Smart Ear.

All Kinsa thermometers have been cleared by the U.S. Food and Drug Administration and meet ASTM standards for professional accuracy. For details about accuracy standards, please see the instructions that came with your Kinsa thermometer, which are also available here in PDF format.

If you have any additional questions, we want to know!  Reach out to our Customer Happiness team at


33 out of 47 found this helpful