# Thermistor Calculation/サーミスタ計算

> Business

Canonical page: [https://chrome-stats.com/d/id6759235232](https://chrome-stats.com/d/id6759235232)

## Overview

- **ID:** `id6759235232`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Shuhei Shimizu
- **Category:** Business
- **Version:** 2.2
- **Last updated:** 2026-07-05
- **First published:** 2026-03-01
- **Size:** 9.25 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/thermistor-calculation-%E3%82%B5%E3%83%BC%E3%83%9F%E3%82%B9%E3%82%BF%E8%A8%88%E7%AE%97/id6759235232)
- **Website:** [https://cwshuh.github.io/](https://cwshuh.github.io/)
- **Privacy policy:** [https://sites.google.com/view/cwshuh-calc-policy](https://sites.google.com/view/cwshuh-calc-policy)

## Description

[サーミスタ計算] は、サーミスタの既存温度、抵抗値を入力することにより、知りたい温度の抵抗値や知りたい抵抗値の温度を高精度な方法で算出できるアプリです。

空調システムの技術者、温度センサやサーミスタ自体の開発者、温度センサや空調機器の品質管理者、現場のSEなどの技術者に最適。

サーミスタのB定数算出、B定数算式を利用した逆算、拡張アレニウス式を応用したa・c・d定数・抵抗値及び温度の算出（3温度点/5温度点）、Steinhart-Hart方程式による抵抗値及び温度の算出が出来る。
拡張アレニウスやステインハートによる計算はアプリ内課金になります。
それぞれの計算方法でその精度は異なり、検証結果も示している。
拡張アレニウス式応用の際の温度算出は、ニュートン・ラフソン法を用いている。

[Thermistor Calculation] is an app that allows you to enter a thermistor's existing temperature and resistance value to accurately calculate the resistance value at a desired temperature or the temperature at a desired resistance value.

It is ideal for climate system engineers, temperature sensor and thermistor developers, temperature sensor and air conditioning equipment quality managers, and on-site system engineers.

It can calculate thermistor B constant, perform back calculations using the B constant formula, calculate a, c, and d constants, resistance values, and temperatures using the extended Arrhenius equation (3 temperature points/5 temperature points), and calculate resistance values ​​and temperatures using the Steinhart-Hart equation.

Extended Arrhenius and Steinhart calculations are premium and require in-app purchases.
Accuracy varies depending on the calculation method, and verification results are also shown.
The Newton-Raphson method is used to calculate temperatures when applying the extended Arrhenius equation.
The next version will include CSV output of RT tables (free update).

## Rankings

- #2,118,591 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6759235232)