Sum Numbers from 1 to N

This post will guide you how to sum the numbers from 1 to N in Excel Worksheet. How do I sum the integers from 1 to N with an excel formula. How to write an excel formula to calculate 1+2+3+…+N in excel.

Normally, we can use the SUM function to sum a list of numbers easily. But if you supply a number N and you want to calculate the numbers from 1 to N . How to achieve it.

Assuming that you supply a number 100, and you want to sum the numbers from 1 to 100 (1+2+3+…+100), you need to create a formula based on the SUMPRODUCT function, the ROW function and the INDIRECT function to achieve the result. Like this:

=SUMPRODUCT(--(ROW(INDIRECT(C1&":"&C2))))

Type this formula into the formula box of a blank cell and press Enter key in your keyboard.

sum numbers from 1 to n1

You will see that the numbers from 1 to 100 has been added up. And you just need to update the end number in Cell C2 as you need to sum numbers.

Related Functions


  • Excel SUMPRODUCT function
    The Excel SUMPRODUCT function multiplies corresponding components in the given one or more arrays or ranges, and returns the sum of those products.The syntax of the SUMPRODUCT function is as below:= SUMPRODUCT (array1,[array2],…)…
  • Excel ROW function
    The Excel ROW function returns the row number of a cell reference.The ROW function is a build-in function in Microsoft Excel and it is categorized as a Lookup and Reference Function.The syntax of the ROW function is as below:= ROW ([reference])….
  • Excel INDIRECT function
    The Excel INDIRECT function returns the cell reference based on a text string, such as: type the text string “A2” in B1 cell, it just a text string, so you can use INDIRECT function to convert text string as cell reference….
Related Posts
Case Sensitive Lookup with SUMPRODUCT and EXACT

Today, we will show you how to use SUMPRODUCT and EXACT to perform a case sensitive exact match. In this article, we provide a simple example to calculate bonus for employees whose names are case-sensitive. If you meet similar scenarios ...

Average per Week by Formula in Excel
Average per Week 1

We usually apply AVERAGE function or relevant functions to return average directly in Excel worksheet. But in some situations, only applying average relevant functions cannot figure out our problem. Sometimes we can create a formula with functions and mathematical operation ...

How to Sum if Equal to Many Items or A Range in Excel
How to Sum if Equal to Many Items 12

If we want to sum numbers from a range with criteria, we often select SUMIF of SUMIFS functions as the first choice to create a formula. The criteria can be a number or an array or a collection of some ...

How to Sum if Equal to X or Y in Excel
How to Sum if Equal to X or Y 19

In daily work, if we want to sum numbers from a range, and only sum the numbers which being equal to X or Y in the range, we can create a formula with Excel build-in functions to get the result. ...

How To Sum the Largest N Values in Excel

Sometimes we may want to sum the largest N numbers or top N numbers in a range. In this article, we will show you the method of “SUM the Largest N Numbers” by a simple formula which consist of SUMPRODUCT ...

How to Sum for Cell Contains Formula Only in Excel
How to Sum for Cell Contains Formula Only in Excel 9

Sometimes values are created by formulas in cells. If we want to sum values which are created by formulas from a range, but some values which are hardcoded also list in the same range, how can we filter out matched ...

How to Sum the Smallest N Values in Excel
How to Sum the Smallest N Values in Excel 15

Sometimes we may want to sum the first smallest N numbers in a range in Excel. In this article, we will show you the method of “SUM the Smallest N Numbers” by a simple formula which consist of SUMPRODUCT and ...

How to Sum by SUMPRDUCT with One Specific Criteria Multiple Columns in Excel
How to Sum by SUMPRDUCT with One Specific Criteria Multiple Columns in Excel1

Sometimes we may meet the case that to sum numbers based on one specific criteria. In this article, we will show you the method to resolve this problem by formula with the help of Excel SUMPRODUCT function. SUMPRODUCT can filter ...

How to Sum by SUMPRDUCT with Specific Criteria in Excel
How to Sum by SUMPRDUCT with Specific Criteria in Excel 15

Sometimes we may meet the case that to sum numbers based on two or more specific criteria. In this article, we will show you the method to resolve this problem by formulas with the help of Excel SUMPRODUCT function. SUMPRODUCT ...

How to Count Unique Numeric Values in a Range in Excel
count unique numberic values7

This post will guide you how to count unique numeric values in the given range in Excel 2013/2016 or Excel office 365. How do I count the unique numeric values in a list of data with some duplicate values using ...

Sidebar