ROUNDDOWN function

PRO BASIC

The ROUNDDOWN function in Jspreadsheet Formulas Pro is a handy tool that allows you to reduce a number to a specified number of digits. Essentially, it removes extra decimal places, rounding the number down to a simpler form. For instance, if you're dealing with a figure like 3.14159 and only need two decimal places, this function can adjust it to 3.14 for you. It's a great way to maintain precision control in your data processing.

Documentation

Rounds a number down to a specified number of digits.

Syntax

ROUNDDOWN(number, num_digits)

Parameter	Description
`number`	The number you want to round down.
`num_digits`	The number of digits to which you want to round down the number.

Behavior

The ROUNDDOWN function rounds a number down, towards zero, to a certain number of decimal places specified. It operates as follows:

If a positive number or zero is entered, the function will round down towards zero.
If a negative number is entered, the function will round down away from zero.
If an empty cell is referenced, the function will consider it as zero.
Boolean values are treated as numbers. Therefore, TRUE is regarded as 1 and FALSE as 0. Text values, however, return an error.
If a non-numeric value is used for the number of digits to round to, the function will return an error.
If an error is input to the function, the function will propagate that error.

Common Errors

Error	Description
#VALUE!	This error occurs when non-numeric values are used as the input, or if the number of digits to round to is non-numeric.
#REF!	This error occurs when a cell reference is invalid.

Best practices

Always ensure the inputs are numeric. The ROUNDDOWN function does not handle non-numeric values well.

Be careful when rounding negative numbers. The ROUNDDOWN function rounds negative numbers away from zero, which may not be the expected behavior.

Validate cell references before using them. Invalid cell references can cause errors.

Do not use a number of digits to round to that is less than -1 or greater than 15. This is outside the valid range and will result in an error.

Usage

A few examples using the ROUNDDOWN function.

ROUNDDOWN(3.14159, 2) returns 3.14  
ROUNDDOWN(99.95, 0) returns 99  
ROUNDDOWN(1234.56789, -2) returns 1200

Interactive Spreadsheet Demo

<html>
<script src="https://jspreadsheet.com/v11/jspreadsheet.js"></script>
<script src="https://jsuites.net/v5/jsuites.js"></script>
<link rel="stylesheet" href="https://jsuites.net/v5/jsuites.css" type="text/css" />
<link rel="stylesheet" href="https://jspreadsheet.com/v11/jspreadsheet.css" type="text/css" />

<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Material+Icons" />
<script src="https://cdn.jsdelivr.net/npm/@jspreadsheet/formula-pro/dist/index.min.js"></script>

<div id="spreadsheet"></div>

<script>
// Set your JSS license key (The following key only works for one day)
jspreadsheet.setLicense('ZGUxOTBhYzc4ZDAyZGM5ODYzMzI5Nzg4OTQ3YmEyZGQyMTJiNWEyYzUyODhiNjFlNmQ2MmJlZmFhZDkzNjdkYmU0YWVhYTU2MGI3ZmExNGEwNjYxNzhjZTg3YjkyYTMxNjIxOTRkNGU1ZTJjODU3NDU4YmRkMWQzNWY3MzdjYzMsZXlKamJHbGxiblJKWkNJNklpSXNJbTVoYldVaU9pSktjM0J5WldGa2MyaGxaWFFpTENKa1lYUmxJam94TnpVM01ETXdPREEwTENKa2IyMWhhVzRpT2xzaWFuTndjbVZoWkhOb1pXVjBMbU52YlNJc0ltTnZaR1Z6WVc1a1ltOTRMbWx2SWl3aWFuTm9aV3hzTG01bGRDSXNJbU56WWk1aGNIQWlMQ0p6ZEdGamEySnNhWFI2TG1sdklpd2lkMlZpWTI5dWRHRnBibVZ5TG1sdklpd2lkMlZpSWl3aWJHOWpZV3hvYjNOMElsMHNJbkJzWVc0aU9pSXpOQ0lzSW5OamIzQmxJanBiSW5ZM0lpd2lkamdpTENKMk9TSXNJbll4TUNJc0luWXhNU0lzSW1Ob1lYSjBjeUlzSW1admNtMXpJaXdpWm05eWJYVnNZU0lzSW5CaGNuTmxjaUlzSW5KbGJtUmxjaUlzSW1OdmJXMWxiblJ6SWl3aWFXMXdiM0owWlhJaUxDSmlZWElpTENKMllXeHBaR0YwYVc5dWN5SXNJbk5sWVhKamFDSXNJbkJ5YVc1MElpd2ljMmhsWlhSeklpd2lZMnhwWlc1MElpd2ljMlZ5ZG1WeUlpd2ljMmhoY0dWeklpd2labTl5YldGMElsMHNJbVJsYlc4aU9uUnlkV1Y5');

// Set the extensions
jspreadsheet.setExtensions({ formula });

// Create a new spreadsheet
jspreadsheet(document.getElementById('spreadsheet'), {
  worksheets: [{
    data: [
    [
        "Price",
        "Decimal Places",
        "Rounded Down"
    ],
    [
        3.14159,
        2,
        "=ROUNDDOWN(A2,B2)"
    ],
    [
        99.95,
        0,
        "=ROUNDDOWN(A3,B3)"
    ],
    [
        1234.56789,
        -2,
        "=ROUNDDOWN(A4,B4)"
    ],
    [
        87.999,
        1,
        "=ROUNDDOWN(A5,B5)"
    ]
]
  }]
});
</script>
</html>

import React, { useRef } from "react";
import { Spreadsheet, Worksheet, jspreadsheet } from "@jspreadsheet/react";
import formula from "@jspreadsheet/formula-pro";
import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";

// Set license
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

export default function App() {
    // Spreadsheet array of worksheets
    const spreadsheet = useRef();

    // Worksheet data
    const data = [
    [
        "Price",
        "Decimal Places",
        "Rounded Down"
    ],
    [
        3.14159,
        2,
        "=ROUNDDOWN(A2,B2)"
    ],
    [
        99.95,
        0,
        "=ROUNDDOWN(A3,B3)"
    ],
    [
        1234.56789,
        -2,
        "=ROUNDDOWN(A4,B4)"
    ],
    [
        87.999,
        1,
        "=ROUNDDOWN(A5,B5)"
    ]
];

    // Render component
    return (
        <Spreadsheet ref={spreadsheet}>
            <Worksheet data={data} />
        </Spreadsheet>
    );
}

<template>
    <Spreadsheet ref="spreadsheet">
        <Worksheet :data="data" />
    </Spreadsheet>
</template>

<script>
import { Spreadsheet, Worksheet, jspreadsheet } from "@jspreadsheet/vue";
import "jsuites/dist/jsuites.css";
import "jspreadsheet/dist/jspreadsheet.css";
import formula from "@jspreadsheet/formula-pro";

// Set license
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

export default {
    components: {
        Spreadsheet,
        Worksheet,
    },
    data() {
        // Worksheet data
        const data = [
    [
        "Price",
        "Decimal Places",
        "Rounded Down"
    ],
    [
        3.14159,
        2,
        "=ROUNDDOWN(A2,B2)"
    ],
    [
        99.95,
        0,
        "=ROUNDDOWN(A3,B3)"
    ],
    [
        1234.56789,
        -2,
        "=ROUNDDOWN(A4,B4)"
    ],
    [
        87.999,
        1,
        "=ROUNDDOWN(A5,B5)"
    ]
]

        return {
            data
        };
    }
}
</script>

import { Component, ViewChild, ElementRef } from "@angular/core";
import jspreadsheet from "jspreadsheet";
import * as formula from "@jspreadsheet/formula-pro";

// Set your JSS license key (The following key only works for one day)
jspreadsheet.setLicense('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');

// Set the extensions
jspreadsheet.setExtensions({ formula });

@Component({
    standalone: true,
    selector: "app-root",
    template: `<div #spreadsheet></div>`
})
export class AppComponent {
    @ViewChild("spreadsheet") spreadsheet: ElementRef;
    // Worksheets
    worksheets: jspreadsheet.worksheetInstance[];

    // Create a new data grid
    ngAfterViewInit() {
        // Create spreadsheet
        this.worksheets = jspreadsheet(this.spreadsheet.nativeElement, {
            worksheets: [{
                data: [
    [
        "Price",
        "Decimal Places",
        "Rounded Down"
    ],
    [
        3.14159,
        2,
        "=ROUNDDOWN(A2,B2)"
    ],
    [
        99.95,
        0,
        "=ROUNDDOWN(A3,B3)"
    ],
    [
        1234.56789,
        -2,
        "=ROUNDDOWN(A4,B4)"
    ],
    [
        87.999,
        1,
        "=ROUNDDOWN(A5,B5)"
    ]
]
            }]
        });
    }
}

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