---
title: "单位换算器参数怎么填？from/to 必填与常见报错排查|万维易源ShowAPI"
canonical_url: "https://www.showapi.com/guides/6a9912824ddd79ab67002082"
last_updated: "2026-09-03T14:24:01+08:00"
meta:
  description: "三个核心参数：num(必填)、from(必填)、to(必填)；type 非必填但建议传，能帮接口定位单位类别。"
  keywords: "单位换算器参数怎么填？from/to 必填与常见报错排查"
  "og:description": "三个核心参数：num(必填)、from(必填)、to(必填)；type 非必填但建议传，能帮接口定位单位类别。"
  "og:title": "单位换算器参数怎么填？from/to 必填与常见报错排查"
---

*

*

*

**

*