PT100 calculator
TemperatureConvert temperature and resistance. Explore the RTD curve, leads and tolerance class.
Configure the sensor
4 wires: ideal Kelvin measurement. Lead effects on the reading are neglected.
Use a comma or decimal point. For negative values, tap +/−.
RTD conversion
Instant update100°C
138.5055Ω
Nominal R vs T curve
PT100 · α ≈ 0.00385Explore the temperature
Drag or use the arrow keysReference points
Nominal element curve, excluding lead resistance.
| °C | R (Ω) | Tolerance °C |
|---|---|---|
| -200 | 18.5201 | — |
| -100 | 60.2558 | — |
| -50 | 80.3063 | — |
| 0 | 100 | — |
| 100 | 138.5055 | — |
| 250 | 194.0981 | — |
| 450 | 264.1791 | — |
| 600 | 313.708 | — |
| 850 | 390.4811 | — |
Class not evaluated. Calculated points, not measurements. This is not a calibration certificate.
RTD temperature and resistance conversion
PT100 · 4-wire · R₀ = 100 Ω · IEC 60751:2022
Element construction: Not specified · Class: Class not evaluated
100 °C
138.5055 Ω
138.5055 Ω
Class not evaluated
Nominal R vs T curve
Reference points
| °C | R (Ω) | Tolerance °C |
|---|---|---|
| -200 | 18.5201 | — |
| -100 | 60.2558 | — |
| -50 | 80.3063 | — |
| 0 | 100 | — |
| 100 | 138.5055 | — |
| 250 | 194.0981 | — |
| 450 | 264.1791 | — |
| 600 | 313.708 | — |
| 850 | 390.4811 | — |
Nominal element curve, excluding lead resistance. 4 wires: ideal Kelvin measurement. Lead effects on the reading are neglected. Calculated reference; it does not establish sensor conformity. Calculated points, not measurements. This is not a calibration certificate.