Pt100 - resistance thermometers

-Generator for an individual Pt100 resistance table-

About the site

This is a private information page about electrical temperature measurement with resistance thermometers (e.g. Pt100, Pt500, Pt1000). My experiences of many years in the field of measurement and control technology are recorded. I do not take over any liability for incorrect information and would be pleased about further suggestions and requests for additions.
Please also visit my information page about variable area flowmeters: https://schwebekoerper.de/en

Dipl.-Ing. Harald Peters

Suppliers of Pt100

Links to selected manufacturers and suppliers of Temperature Sensors.

Tools

Pt100 resistance table calculator

The Pt100 sensor is one of the most widely used temperature sensors in industry, laboratories, and measurement technology worldwide. Its high accuracy, stability, and reproducibility make it an indispensable standard for reliable temperature measurement across a wide temperature range. The Pt100 truly demonstrates its strengths, particularly in applications where precision is critical. A resistance table for Pt100 sensors is essential for correctly interpreting the measured values.
This is exactly where our Pt100 calculator comes in: It allows you to create a customized Pt100/Pt1000 resistance table based on your specific requirements.

Why is a Pt100 resistance table important?

Although the relationship between temperature and resistance is approximately linear, it is not exactly so.
For this reason, standardized tables are used for precise measurements, which specify the exact resistance values for specific temperatures.

The Pt100 Calculator: Flexibility and Precision

Our Pt100 calculator was developed to provide engineers, technicians, and developers with a quick and easy way to create custom resistance tables.
Various input options are available:
  • Start temperature (from -200 °C)
  • End temperature (max. +850 °C)
  • Table subdivision (1 °C, 2 °C, 5 °C, 10 °C oder 20 °C)
  • Sensortype (Pt100, Pt1000)
Thanks to this flexible configuration, the table can be tailored precisely to the specific application.
Whether for laboratory experiments, industrial process monitoring, or the development of electronic control systems—the Pt100 table calculator delivers reliable results every time.

Enter your values


from: °C °C





Calculation formulas for Pt100 resistor

The resistance of the Pt100 sensor is calculated according to DIN EN 60751 using the following 2 formulas:
  • Temperature range: -200 to 0°C:
    Rt = R0 * (1 + A * t + B * t2 + C * (t-100) * t3)
  • Temperature range: 0 to 850°C:
    Rt = R0 * (1 + A * t + B * t2)
Rt=Resistance [Ohm] at desired temperature
R0=Nominal resistance Pt100 at 0°C = 100 Ohm
t= desired temperature [°C]
A= 3,9083 * 10-3
B= -5,775 * 10-7
C= -4,183 * 10-12

Note on authorship
All technical articles published on pt100.de with attribution were written or reviewed by Harald Peters himself.
Author of this article:
Harald Peters – Technical author for temperature measurement technology
Last update of this page: 2026