Temperature slider
Set a temperature quickly and watch the thermometer fill update.
Free maths tool
Thermometer tool
A free classroom thermometer model for setting temperatures and reading Celsius and Fahrenheit scales.
Two scales
Read Celsius marks and Fahrenheit marks on the same thermometer model.
Range choices
Use a weather range from -20 to 50 C or a science range from -20 to 120 C.
Live readout
Switch the current temperature label between Celsius and Fahrenheit.
What the tool does
The thermometer tool gives teachers and students an open model for reading temperature scales.
- set the temperature with a slider
- read the thermometer marks in Celsius and Fahrenheit
- switch the current readout between Celsius and Fahrenheit
- choose a weather range or a wider science range
- use options and fullscreen controls for classroom display
How teachers use it
Open it on a classroom display when students need to connect a temperature value with a thermometer scale.
- set a temperature and ask students to read the Celsius mark
- switch the readout to Fahrenheit and compare the same temperature
- use negative temperatures to discuss below zero
- move from the weather range to the science range when larger temperatures are needed
Why it is useful
Temperature reading depends on scale marks, units and reference points such as zero. A shared thermometer makes those details visible.
- supports Celsius and Fahrenheit vocabulary
- makes below zero and hot temperatures visible
- works as a model before independent measurement practice
Frequently Asked Questions
Is the thermometer tool free?
Yes. Teachers, students and families can open the thermometer tool in a browser for free.
Can it show Celsius and Fahrenheit?
Yes. The thermometer shows both Celsius and Fahrenheit scale marks, and the current readout can switch between Celsius and Fahrenheit.
What ranges are included?
The tool includes a weather range from -20 to 50 C and a wider science range from -20 to 120 C.
Is this different from the measurement practice app?
Yes. The thermometer tool is an open model for exploring temperature scales, while the measurement practice app gives students practice questions.