WORKDAY function

PRO BASIC

The WORKDAY function in Jspreadsheet Formulas Pro is a tool that allows you to calculate a specific date, either before or after a given starting date, based on a specified number of working days. It takes into account weekends (Saturday and Sunday) as non-working days, but does not consider public holidays or specific non-working days. The function is particularly useful for project planning and management, where you need to determine deadlines or milestones based on working days.

Documentation

Returns the date that is the indicated number of working days before or after a date (the starting date).

Syntax

WORKDAY(start_date, days, [holidays])

Parameter	Description
`start_date`	The starting date, expressed as a serial number or a date.
`days`	The number of working days before or after the start date. A positive value for days generates a future date; a negative value generates a past date.
`[holidays]`	Optional. An optional range of one or more dates to exclude from the working calendar, such as state and federal holidays and floating holidays.

Behavior

The WORKDAY function is designed to calculate working days, excluding weekends and optionally specified holidays. It takes in a start date and the number of work days to add or subtract, and returns the resulting date.

For empty cells, the function will return a #VALUE! error as it expects a valid date and number of days.
If the cell contains text that cannot be interpreted as a date or number of days, it will return a #VALUE! error.
If a boolean value is used, it will be interpreted as 0 (for FALSE) or 1 (for TRUE).
The function will return a #NUM! error if the resulting date is outside the range of valid dates (January 1, 1900 and December 31, 9999).
If the provided number of days is non-integer, it will be truncated.

Common Errors

Error	Description
`#VALUE!`	The function returns this error when the input cells are empty, or contain text that cannot be interpreted as a date or number of days.
`#NUM!`	This error is returned when the resulting date is outside the range of valid dates (January 1, 1900 and December 31, 9999).

Best practices

Always make sure that the start date and the number of days are valid to avoid #VALUE! or #NUM! errors.

Use the third optional argument to specify holidays that should be considered non-working days. This should be a range of cells that contain the dates of holidays.

Keep in mind that the function automatically excludes weekends (Saturday and Sunday) in its calculations. If your work week is different, you may need to adjust the function or use a different one.

Usage

A few examples using the WORKDAY function.

WORKDAY("2023-03-15", 5) 
// Returns "2023-03-22" → Adds 5 working days, skipping weekend.

WORKDAY("2023-03-15", -5) 
// Returns "2023-03-08" → Subtracts 5 working days, skipping weekend.

WORKDAY("2023-03-15", 10, ["2023-03-20","2023-03-21"]) 
// Returns "2023-03-31" → Adds 10 working days but excludes holidays (Mar 20, Mar 21).

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('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');

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

// Create a new spreadsheet
jspreadsheet(document.getElementById('spreadsheet'), {
  worksheets: [{
    data: [
    [
        "Project Start",
        "Work Days",
        "Project End",
        "Holiday List"
    ],
    [
        "2024-01-15",
        10,
        "=WORKDAY(A2,B2)",
        "2024-01-19"
    ],
    [
        "2024-02-01",
        15,
        "=WORKDAY(A3,B3,D3:D4)",
        "2024-02-12"
    ],
    [
        "2024-03-10",
        -5,
        "=WORKDAY(A4,B4)",
        "2024-02-19"
    ],
    [
        "2024-04-01",
        20,
        "=WORKDAY(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 = [
    [
        "Project Start",
        "Work Days",
        "Project End",
        "Holiday List"
    ],
    [
        "2024-01-15",
        10,
        "=WORKDAY(A2,B2)",
        "2024-01-19"
    ],
    [
        "2024-02-01",
        15,
        "=WORKDAY(A3,B3,D3:D4)",
        "2024-02-12"
    ],
    [
        "2024-03-10",
        -5,
        "=WORKDAY(A4,B4)",
        "2024-02-19"
    ],
    [
        "2024-04-01",
        20,
        "=WORKDAY(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 = [
    [
        "Project Start",
        "Work Days",
        "Project End",
        "Holiday List"
    ],
    [
        "2024-01-15",
        10,
        "=WORKDAY(A2,B2)",
        "2024-01-19"
    ],
    [
        "2024-02-01",
        15,
        "=WORKDAY(A3,B3,D3:D4)",
        "2024-02-12"
    ],
    [
        "2024-03-10",
        -5,
        "=WORKDAY(A4,B4)",
        "2024-02-19"
    ],
    [
        "2024-04-01",
        20,
        "=WORKDAY(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: [
    [
        "Project Start",
        "Work Days",
        "Project End",
        "Holiday List"
    ],
    [
        "2024-01-15",
        10,
        "=WORKDAY(A2,B2)",
        "2024-01-19"
    ],
    [
        "2024-02-01",
        15,
        "=WORKDAY(A3,B3,D3:D4)",
        "2024-02-12"
    ],
    [
        "2024-03-10",
        -5,
        "=WORKDAY(A4,B4)",
        "2024-02-19"
    ],
    [
        "2024-04-01",
        20,
        "=WORKDAY(A5,B5)",
        ""
    ]
]
            }]
        });
    }
}

Edit this page on GitHub