Buying guide
Instant-Read Thermometers
Our pick
ThermoWorks Thermapen® ONE
The ThermoWorks Thermapen ONE is the instant-read thermometer to get for most cooks.1
Before you buy: Its probe measures 4.3 inches, and the Talking Thermometer (RT8400) reaches 4.9 inches.12
The alternatives
Other contenders
ThermoWorks Talking Thermometer (RT8400)
Choose the Talking Thermometer RT8400 when you want a longer probe: its 4.9-inch probe gives more reach.2
For fast checks at a hot grill
Compare the specified reading time when you want quick temperature checks.1 The Thermapen ONE has a rated one-second reading time.1
For the center of a thick roast
Probe length decides whether a thermometer can reach the center of a thick roast.2 The ThermoWorks Talking Thermometer (RT8400) is the pick here, and its probe measures 4.9 inches.2
For exact doneness targets
Check the stated accuracy at the temperatures you plan to measure.1 The Thermapen ONE is rated to ±0.5°F from -4 to 248°F.1
2 models / at a glance
Key differences
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Models in this comparison
Every specification for these products
| Specification | ThermoWorks Thermapen® ONE | ThermoWorks Talking Thermometer (RT8400) |
|---|---|---|
| Read time | 1 s1 | 10 s3 |
| Accuracy | 0.5 deg_f1 | 1.8 deg_f3 |
| Water resistance | IP67 Waterproof1 | Not rated3 |
| Probe length | 4.3 in1 | 4.92125 in2 |
Compare features
2 products
ThermoWorks Thermapen® ONE
- Water resistance
- IP67 Waterproof1
ThermoWorks Talking Thermometer (RT8400)
- Water resistance
- Not rated3
How they compare
Scroll the table to see every product and specification.
| Specification | Our pickThermoWorks Thermapen® ONE | ThermoWorks Talking Thermometer (RT8400) |
|---|---|---|
| Read time | 1 s1 | 10 s3 |
| Accuracy | 0.5 deg_f1 | 1.8 deg_f3 |
| Water resistance | IP67 Waterproof1 | Not rated3 |
| Probe length | 4.3 in1 | 4.92125 in2 |