These soft, flexible, nontoxic thermometers are ideal for oral and axillary use. Designed for one-time use, these disposable thermometers accurately assess infant, pediatric and adult temperatures in 60 seconds, while also addressing the risk of patient cross-infection. Temperature in degrees Fahrenheit. °F to °C : Deduct 32, then multiply by 5, then divide by 9. °C to °F : Multiply by 9, then divide by 5, then add 32.