Updated
Thermapen (ETI / ThermoWorks)

Thermapen One

The benchmark instant-read thermometer: one-second readings, 0.3C accuracy, IP67 body and a rotating backlit display, handmade in the UK.

4.8 / 5
Outstanding

Strengths

  • Fastest verified readings in comparative testing - about three times quicker than standard Thermapens
  • Certified accuracy with an included traceable calibration certificate
  • IP67 waterproof and drop-resistant build that outlasts cheap plastic rivals

Watch outs

  • Costs several times more than budget instant-read thermometers
  • Instant-read only - cannot be left in meat during a long cook (a leave-in probe is a different tool)
  • Hand-wash only despite the IP67 rating
  • Reading speed One second (full reading)
  • Accuracy Plus or minus 0.3C from -19.9 to 119.9C; 0.4C to 199.9C; 1C elsewhere
  • Temperature range -49.9C to 299.9C
  • Display Backlit LCD with 360-degree auto-rotation; 0.1 or 1 degree resolution, C/F switchable

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Instant-read food thermometer checking temperature while cooking
By Rob Griffiths1 min read
Reading speed
One second (full reading)
Accuracy
Plus or minus 0.3C from -19.9 to 119.9C; 0.4C to 199.9C; 1C elsewhere
Temperature range
-49.9C to 299.9C
Display
Backlit LCD with 360-degree auto-rotation; 0.1 or 1 degree resolution, C/F switchable
Waterproof rating
IP67
Battery
Single 1.5V AAA; about 2,000 hours without backlight, 100 hours with
Probe
Fold-out probe; motion-sensor wake and sleep
Dimensions
19.3 x 48.2 x 156.2 mm, 115 g
Body
ABS with BioMaster antimicrobial protection
Calibration
Free traceable calibration certificate included; conforms to EN 13485
Origin
Designed and handmade in the UK
Warranty
5-year guarantee
Colours
12 colours including red, black, white, grey, yellow and blue