Temperature Difference Calculator
Find the difference between two readings — even when one is in Celsius and the other in Fahrenheit — and choose the unit for the result.
Keep your temperature history on iPhone
Temperature Checker stores your manual readings privately on your device, with notes, profiles, and organized history.
Compare two readings
Difference
1.5 °C
The second reading is 1.5 °C higher than the first.
About this temperature difference calculator
Comparing two readings — such as a morning and an evening entry, or indoor versus outdoor — is easier when the math is done for you. This tool handles mixed units and shows the difference in whichever unit you prefer.
To keep a running record instead, build a body temperature log template or summarize entries with the temperature log summary.
Related free tools
Body Temperature Log Template
Create a simple body temperature log for yourself, your family, children, or pets.
Celsius to Fahrenheit Converter
Quickly convert °C to °F and °F to °C for weather, room comfort, and body temperature entries.
Temperature Log Summary
Enter manual readings and view a simple highest, lowest, average, and trend summary.
See all free temperature tools.