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Thermapen® ONE Thermometer
Fast and accurate digital kitchen thermometer
- Lightning-fast one-second readings
- High accuracy of ±0.3 °C
- Reads between -49.9 and 299 °C
- Durable IP67 waterproof design
- Intuitive 360° auto-rotating display
- Designed and handmade in the UK
- 5-year guarantee
- Free calibration certificate
- Also available in limited edition colours
The Thermapen ONE is a fast and accurate digital food thermometer that helps to perfect every cooking challenge. Ideal for everything from Sunday roasts and summer BBQs to cakes and confectionary. Thermapen will give you confidence that every summer dish is done.
Cook with Chef-Grade Precision
Thermapen thermometers are loved by professional chefs and home cooks worldwide for their high performance, sleek designs and quality construction. Choose Thermapen to take every cook to the next level with precise results that last.
Designed & Made in Britain
Designed & Made in Britain
Made in Britain by leading temperature experts with over 40 years of experience, every Thermapen is made with quality at the heart. Its wide range of premium and versatile features make it perfect for any cooking challenge, from baking to BBQ.
How it Works is So Simple
OPEN THE PROBE
The sleek, buttonless design means you can simply open the probe to start measuring.
INSERT INTO FOOD
Place the probe into the centre of any food or liquid to read the temperature.
CLEAN & CLOSE
The thermometer will automatically power off when set down.
A Thermometer Like No Other
FAST & ACCURATE
1-second readings accurate to ±0.3 °C — free calibration certificate included
INTUITIVE DISPLAY
Auto on/off, backlight and 360° rotating screen
IP67 WATERPROOF
Robust, fully waterproof and built to last
5-YEAR GUARANTEE
Hassle-free repairs and replacements from a UK manufacturer
WIDE RANGE
Readings from -49.9 to 299 °C, ideal for confectionery, frying oil and more
Made by Temperature Experts
Thermapen thermometers have been designed using UK-leading expertise in thermometry. With over 40 years of temperature knowledge, we start creating every product with in-depth market research and finish by putting them together using only the highest quality parts. We even carry out 13 quality checks on every Thermapen before it's ready to ship to customers.
Certified Accuracy
Each Thermapen is calibrated by hand in our UK calibration laboratory and comes with a certificate to show this. With this certification, you can be sure your Thermapen will deliver high-accuracy readings that meet professional chef standards.
Why People Love Thermapen
★★★★★ 5/5
It simply just works instantly reliably I have complete trust in the readings and the results with cooked meats speak for themselves. Worth every penny.
sIMON R.
★★★★★ 5/5
I bought the Thermapen One to replace a cheaper brand version and you can immediately see the difference in performance ! This thing is seriously quick and accurate! Chuck the others out and buy
1 good one!
1 good one!
STEPHEN D.
★★★★★ 5/5
Absolutely love the Thermapen, as useful for jam and candy making as properly cooking meat. Mine was a gift, and in turn we have gifted them to others. Every kitchen should have one.
Merith G.
Not sure which Thermapen is for you?
Check out our Buyer's Guide to help you choose.
Join the team
Temperature community
Discover what it means to be a part of the Thermapen
#TeamTemperature community.
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Data sheet
| Range: | -49.9 to 299.9°C (-58.0 to 572.0°F) |
|---|---|
| Operating Range: | -20 to +50 °C |
| Resolution: | 0.1 °C/F or 1°C/F - user configurable |
| Accuracy: | ±0.3°C (-19.9 to 119.9 °C) ±0.4°C (-49.9 to 199.9 °C) otherwise ±1 °C |
| Battery: | 1.5 volt AAA |
| Battery Life: | 2000 hours (without backlight), 100 hours with backlight on |
| Sensor Type: | K thermocouple |
| Display: | 14.3mm (horizontal) x 11.85mm (vertical) LCD |
| Backlight: | yes |
| Dimensions: | 19.3mm x 48.2mm x 156.2mm |
| Weight: | 115 grams |
| Case Material: | ABS plastic which includes BioMaster product protection |
| Country of Manufacture: | United Kingdom |
| Guarantee: | five years |
| Water / Dust Resistance: | IP67 protection |
| Measurement Scale: | Celsius / Fahrenheit |
| Certification: | Free traceable calibration certificate |
| Conforms to Standard: | EN 13485 |
| Warranty: | 5 years |
Specific References
| ean13 | 5024368187932 |
|---|
Reviews (394)
95% (373)
4% (17)
0% (1)
0% (1)
1% (2)
Kitchen Essential
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I don't know what I would do without my Thermapen. I use it daily in my kitchen and has made huge difference to my cooking; no more guesswork about whether something is cooked and safe to eat. It is the one gadget that has transformed my kitchen skills and ensures that my food is served at its best. I have been so pleased with the quality of these instruments that I have bought them as presents for others in my family and they also find they cannot cook without them.
By Chris L. on 01/02/2026
Excellent Results and easy to use
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Initially purchased for Marmalade/Jam making. The gauge was spot on and resulted in a perfect set (which can be a lottery even as an experienced preserves maker). Also successfully used it for a perfect steak and other foods. Very pleased. The internal backlight is very useful as is the automatic sleep/wake-up if one is doing repetitive testing and one doesn't want to mess about opening and closing the device repeatedly. Some gadgets just sit in the drawer/cupboard - this one doesn't. Well made and accurate. The temperature tables on the box (and other online information) are helpful. Also very useful for the increasing use of airfryers which do cook more quickly but is is even more important to know that the food in the middle is at the right temperature even though the outside looks cooked.
By Chris T. on 31/01/2026
Revolutionary!
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This pen has completely revolutionised marmalade making! No more plates in the freezer and wrinkle testing - so easy!!
By Lesley B. on 31/01/2026
No More Guesswork!
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Works really well. Lovely big display - easy to read. Simple to use. The website has lots of useful information regarding temperatures. I can eat food with confidence knowing that it's been thoroughly cooked to reach the correct temperature. Great customer service too!
By Kathryn C. on 29/01/2026
Perfect
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I have never owned a thermometer and did not know which one to buy. Guided by a baker who offered much technical advice, I chose Thermapen One. I have only just started to use it but love its simplicity. The ability to tell the temperature of a room, an airing cupboard or dough, has benefited my baking.
By Christine C. on 21/01/2026