---
title: Number.RoundDown – ปัดเศษลง
url: https://www.thepexcel.com/functions/power-query/number-functions/number-rounddown/
type: function-explainer
program: Power Query
syntax: "Number.RoundDown(number as nullable number, optional digits as nullable number) as nullable number"
date: 2025-12-03
updated: 2025-12-17
scores:
  popularity: 6
  difficulty: 2
  usefulness: 6
---

# Number.RoundDown – ปัดเศษลง

> ปัดเศษลง

## คำอธิบาย

ปัดเศษลงเสมอ (Floor)

## Syntax

```excel
Number.RoundDown(number as nullable number, optional digits as nullable number) as nullable number
```

## Arguments

| Name | Required | Type | Default | Description |
| --- | --- | --- | --- | --- |
| number | Yes | number |  | ตัวเลข |

## ตัวอย่าง

### 1. ปัดลง

```excel
Number.RoundDown(1.9)
```

**ผลลัพธ์:** `1`

ปัดลงเป็นจำนวนเต็ม

## ฟังก์ชันที่เกี่ยวข้อง

- [Number.Round – ปัดเศษทศนิยม](https://www.thepexcel.com/functions/power-query/number-functions/number-round/)
- [Number.RoundUp – ปัดเศษขึ้น](https://www.thepexcel.com/functions/power-query/number-functions/number-roundup/)

## แหล่งข้อมูลเพิ่มเติม

- [PowerQuery.how](https://powerquery.how/number-rounddown/) _(guide)_

---

_Source: [https://www.thepexcel.com/functions/power-query/number-functions/number-rounddown/](https://www.thepexcel.com/functions/power-query/number-functions/number-rounddown/)_