# How to Sum Numbers by Formula if Cells Are Equal to A Certain Value in Excel

We may meet the case that sum numbers based on a certain value in daily work. To sum numbers based on a certain value, we can define this value as a criterion. Then sum up all numbers which meet the condition. The scenario can be simple or complex in real life. But no matter how complex it is, we can use proper excel function to resolve problem.

In this article, we will show you the resolution of ‘**sum if cells equal to a certain value’** by formula with the help of Excel **SUMIFS** function. Through demonstrate a simple instance, we will introduce you the syntax, arguments of **SUMIFS** function, and let you know how this formula works for reaching the target. Actually, some other functions like **SUMIF** (or the combination of excel functions) can also resolve this issue, we will also mention **SUMIF** function a little bit in the end to let you know another way of sum number with condition. After reading the article, you may have a simple understanding of **SUMIFS** function, and also a supplement of you excel skills

__EXAMPLE__

Refer to above table, we can see that we sale only one kind of fruit each week. We list week number in column A, some kinds of fruits in column B, fruits are on sale alternatively. Total amount for each week for specific fruit is listed in column C.

In this instance, we want to calculate total amount for apple. That means we need to sum up data in column C which B column in the same row equals to ‘Apple’ exactly. We can apply a formula contains **SUMIFS **function to resolve this issue.

__FORMULA – SUMIFS FUNCTION__

**Step 1: **Select B2:B9, then in **Name Box** define a new name for this range, for example ‘Fruit’.

**Step 2: **Select C2:C9, in **Name Box** define a new name for this range, for example ‘Amount’.

**Step 3: **In F2, enter the formula **=SUMIFS(Amount,Fruit,”Apple”)**.

**Step 4: **Press **Enter** after typing the formula.

We can see in column A there are three cells are equal to text ‘**Apple**’, the corresponding amounts are 100 (in cell C2), 150 (in cell C5) and 150 (in cell C8), so the total is** 100+150+150=400**. The formula works correctly.

__SUMIFS FUNCTION INTRODUCTION__

**SUMIFS** function can be seen as **SUM+IFS**, it can handle multiple ‘criteria range’ and ‘criteria’ combinations.

For **SUMIFS** function, the syntax is:

**SUMIFS(sum_range, criteria_range1, criteria1, [criteria_range2, criteria2], …)**. Contents in [] are optional.

__ALL ARGUMENTS__

**SUMIFS – SUM RANGE**

In our instance, C2:C9 is the sum range obviously. We define this range with name ‘Amount’ in precondition, it is easy to understand than just entering ‘C2:C9’ in sum range position in formula.

In the formula bar, select ‘Amount’, press **F9**, values in this range are listed in an array.

**SUMIFS – CRITERIA RANGE**

B2:B9 is the criteria range. In this instance we have only one criteria range. This range contains three kinds of fruits.

In the formula bar, these fruits are displayed in proper order in an array:

**SUMIFS – CRITERIA**

We want to calculate total amount for ‘Apple’ only. We need to look up all cells equal to ‘Apple’ from criteria range. So, in criteria position we enter ‘Apple’. **SUMIFS** function supports texts, but they should be enclosed into double quotes “ “ when applying them.

__HOW FORMULA WORKS__

After introducing each argument, we get two arrays and a text within double quotes, the formula is converted into below format in the formula bar.

=SUMIFS({100;120;200;150;130;230;150;250},{"Apple";"Banana";"Orange";"Apple";"Banana";"Orange";"Apple";"Banana"},"Apple")

See screenshot below:

As mentioned above, the criteria range, criteria are:

**Criteria range: {“Apple”;”Banana”;”Orange”;”Apple”;”Banana”;”Orange”;”Apple”;”Banana”}**

**Criteria: “Apple”**

In criteria range, “Apple” occurs three times, at the first position, the fourth position and the seventh position; So, these positions are marked with ‘True’ after comparing with text ‘Apple’, the others are not ‘Apple’, so they are marked with ‘False’.

So, after comparing we get below array:

**{True;False;False;True;False;Flase;True;False}**

Convert ‘True’ to ‘1’ and ‘False’ to ‘0’:

**{0;0;1;0;1;0;0;0}**

Now, we have below two arrays:

**Array 1: {100;120;200;150;130;230;150;250} – sum range**

**Array 2: {1;0;0;1;0;0;1;0} – if cell equals to ‘Apple’, 1 is displayed.**

We list the two arrays in two rows, and create a new array ‘Array3’ to save numbers based on different values in array2. For example, in array1, value will be copied to array3 only if array2 value in the same column is “1”, otherwise, “0” will be recorded in array3 instead of the original value. So, we get below table finally:

In array2, 1 means in this position the original value is ‘Apple’; Array1 records amount for each kind of fruit in array2. Above all, numbers which are not zero in array3 are the amounts of ‘Apple’ after filtering. Now, sum up all values in array3.

**100+0+0+150+0+0+150+0=400**

Above analysis can help us know the process of this formula reaching the goal step by step clearly.

__COMMENTS__

**1**. To understand the formula easily, we define range name in precondition. If you ignore this step, you can directly enter the range reference in formula.

2. For this instance, you can also apply **SUMIF** function.

Enter **=SUMIF(B2:B9,”Apple”,C2:C9)** instead of applying SUMIFS formula.

We can get the same result. You can see that the order of arguments is a little different than **SUMIFS **function.

__SUMMARY__

**1**.** SUMIFS** function can handle multiple groups of criteria ranges and criteria. Sum range is first argument among all arguments.

**2**. **SUMIFS** function supports user defined range name.

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