Compact mode

SUM vs DAYS vs WEEKNUM

Table of content

Basic Classification Comparison
Usage Context Comparison
Basic Information Comparison
History Comparison
Facts Comparison

Usage Information Comparison
Technical Details Comparison
Evaluation Comparison
Ratings Comparison

Basic Classification Comparison

Function Category 📊

Primary classification of the Excel function based on its main purpose and usage domain, helps users quickly identify function types

SUM

Mathematical

SUM belongs to the Mathematical category. Excel functions for performing mathematical calculations Click to see all.

DAYS

Date & Time

DAYS belongs to the Date & Time category. Excel functions for working with dates and time calculations Click to see all.

WEEKNUM

Date & Time

WEEKNUM belongs to the Date & Time category. Excel functions for working with dates and time calculations Click to see all.
Operation Type 🔧

Fundamental type of operation or action that the Excel function performs on its inputs

For all*

Calculation

Excel functions for performing various calculations

Usage Context Comparison

For whom 👥

Target user groups who would benefit most from using this Excel function

For all*

Business Managers

Excel functions helpful for business management and decision making

SUM

Data Analysts

SUM is designed for Data Analysts. Excel functions specifically designed for data analysis and interpretation Click to see all.

DAYS

Project Managers

DAYS is designed for Project Managers. Excel functions helpful for project planning and tracking Click to see all.

WEEKNUM

Project Managers

WEEKNUM is designed for Project Managers. Excel functions helpful for project planning and tracking Click to see all.
Purpose 📝

Primary purposes and use cases of the Excel function

SUM

Data Analysis

SUM is used for Data Analysis. Functions specifically designed for analyzing data Click to see all.

Data Aggregation

SUM is used for Data Aggregation. Functions for combining and summarizing data Click to see all.

DAYS

Date Calculations

DAYS is used for Date Calculations. Functions for working with dates and time calculations Click to see all.

WEEKNUM

Date Calculations

WEEKNUM is used for Date Calculations. Functions for working with dates and time calculations Click to see all.

Basic Information Comparison

Known For ⭐

Distinctive characteristic or primary strength of the Excel function

SUM

Basic Arithmetic Calculations

SUM is known for Basic Arithmetic Calculations.

DAYS

Calculate Days Between Dates

DAYS is known for Calculate Days Between Dates.

WEEKNUM

Week Number Calculation

WEEKNUM is known for Week Number Calculation.

History Comparison

Creation Date 📅

Original release date of the Excel function

SUM

Excel 2.0

SUM was created in Excel 2.0. Functions introduced in the Excel 2.0 version release Click to see all.

DAYS

Excel 2013

DAYS was created in Excel 2013. Functions added in the Excel 2013 release Click to see all.

WEEKNUM

Excel 2000

WEEKNUM was created in Excel 2000. Functions first released with Excel 2000 version Click to see all.
Created By 👤

Organization or team responsible for developing the function

For all*

Microsoft Excel Team

Functions officially created by the Microsoft Excel development team

Facts Comparison

Interesting Fact 💡

Unique or lesser-known information about the Excel function

SUM

Most commonly used function in Excel

DAYS

Replaced the older DATEDIF for simple calculations

WEEKNUM

Used in project timeline tracking
Sarcastic Fact 🤣

Humorous or ironic observation about the Excel function

SUM

Making adding numbers look complicated since 1985

DAYS

Counts days better than a calendar-obsessed squirrel

WEEKNUM

Causes arguments about when weeks actually start

Usage Information Comparison

Formula Complexity Level 📖

Indicates the difficulty level and complexity of using the Excel function effectively

For all*

Simple

Basic Excel functions for common calculations and tasks

Technical Details Comparison

Input Data Type 📝

Types of data that the Excel function accepts as input parameters

SUM

Number

SUM accepts Number as input data. Excel functions specifically designed for numerical calculations Click to see all.

DAYS

Date

DAYS accepts Date as input data. Excel functions for working with dates and time values Click to see all.

WEEKNUM

Date

WEEKNUM accepts Date as input data. Excel functions for working with dates and time values Click to see all.
Version Compatibility 💻

Indicates which Excel versions and platforms the function is compatible with < including Office 365< Excel 2019< 2016< etc.

For all*

Excel 2019

Excel functions that work specifically in Excel 2019 version
Excel 2016

Excel functions that work specifically in Excel 2016 version
Excel 2013

Excel functions that work specifically in Excel 2013 version

SUM

Microsoft 365

SUM is compatible with Microsoft 365 Excel functions optimized for the latest Microsoft 365 platform Click to see all.

Excel Online

SUM is compatible with Excel Online Excel functions optimized for use in the web-based Excel Online platform Click to see all.
Operating System 💾

Specifies the operating systems where the function can be used < including Windows< macOS< and web platforms

For all*

Windows

Excel functions optimized for Windows operating system
MacOS

Excel functions optimized for MacOS users
Web Excel

Excel functions available in web-based versions
Required Arguments Count 🔢

Number of mandatory arguments needed for the function to work properly

SUM

1

SUM needs 1 required arguments Click to see all.

DAYS

2

DAYS needs 2 required arguments Click to see all.

WEEKNUM

1

WEEKNUM needs 1 required arguments Click to see all.
Required Arguments Type 📊

The data types accepted as valid input arguments for the function

SUM

Number

SUM accepts Number as input types Excel functions that perform calculations specifically with numerical inputs Click to see all.

Range

SUM accepts Range as input types Excel functions that operate on cell ranges for calculations Click to see all.

Array

SUM accepts Array as input types Excel functions that specifically work with array inputs for calculations Click to see all.

DAYS

Date

DAYS accepts Date as input types Excel functions specialized in processing date and time calculations Click to see all.

WEEKNUM

Date

WEEKNUM accepts Date as input types Excel functions specialized in processing date and time calculations Click to see all.

Evaluation Comparison

Pros ✅

Key advantages and strengths of the Excel function

SUM

Easy To Use

Widely Recognized

Versatile

Fast Calculation

DAYS

Simple To Use

Accurate Calculations

Intuitive

WEEKNUM

Consistent Week Numbering

Multiple Systems Support
Cons ❌

Limitations and potential drawbacks of the Excel function

SUM

Limited To Numbers Only

Cannot Handle Text

No Text Handling

DAYS

Only Works With Dates

Limited Functionality

Functions with restricted capabilities, reducing problem-solving options Click to see all.

WEEKNUM

Different Week Counting Systems

Functions use varying week numbering methods, affecting date calculations Click to see all.

Regional Variations