Excel VLOOKUP Function
VLOOKUP is an Excel function to look up data in a table organized vertically. VLOOKUP supports approximate and exact matching, and wildcards (* ?) for partial matches. Lookup values must appear in the first column of the table passed into VLOOKUP.
- lookup_value - The value to look for in the first column of a table.
- table_array - The table from which to retrieve a value.
- column_index_num - The column in the table from which to retrieve a value.
- range_lookup - [optional] TRUE = approximate match (default). FALSE = exact match.
VLOOKUP is an Excel function to get data from a table organized vertically. Lookup values must appear in the first column of the table passed into VLOOKUP. VLOOKUP supports approximate and exact matching, and wildcards (* ?) for partial matches.
VLOOKUP takes four arguments: lookup_value, table_array, column_index_num, and range_lookup. Lookup_value is the value to look for, and table_array is the range of vertical data to look inside. The first column of table_array must contain the lookup values to search. The column_index_num argument indicates column number of the value to retrieve, where the first column of table_array is column 1. Finally, range_lookup controls match behavior. If range_lookup is TRUE or 1, VLOOKUP will perform an approximate match. If range_lookup is FALSE or zero, VLOOKUP will perform an exact match. Important: range_lookup is optional and defaults to TRUE, so VLOOKUP will perform an approximate match by default. See below for more information on matching.
V is for vertical
The purpose of VLOOKUP is to look up information in a table like this:
With the Order number in column B as the lookup_value, VLOOKUP can get the Cust. ID, Amount, Name, and State for any order. For example, to get the name for order 1004, the formula is:
=VLOOKUP(1004,B5:F9,4,FALSE) // returns "Sue Martin"
VLOOKUP is based on column numbers
When you use VLOOKUP, imagine that every column in the table_array is numbered, starting from the left. To get a value from a given column, provide the number for column_index_num. For example, the column index to retrieve the first name below is 2:
By changing only column_index_num, you can look up columns 2, 3, and 4:
Note: normally, we would use an absolute reference for H3 ($H$3) and B4:E13 ($B$4:$E$13) to prevent these from changing when the formula is copied. Above, the references are relative to make them easier to read.
VLOOKUP only looks right
VLOOKUP can only look to the right. In other words, you can only retrieve data to the right of the column that holds lookup values:
VLOOKUP has two modes of matching, exact and approximate, controlled by the fourth argument, range_lookup. The word "range" in this case refers to "range of values" – when range_lookup is TRUE, VLOOKUP will match a range of values rather than an exact value. A good example of this is using VLOOKUP to calculate grades. When range_lookup is FALSE, VLOOKUP performs an exact match, as in the example above.
Important: range_lookup is optional defaults to TRUE. This means approximate match is the default mode, which can be dangerous. Set range_lookup to FALSE to force exact matching:
Tip: always supply a value for range_lookup as a reminder of expected behavior.
Note: You can also supply zero (0) for an exact match, and 1 for approximate match.
Exact match example
In most cases, you'll probably want to use VLOOKUP in exact match mode. This makes sense when you have a unique key to use as a lookup value, for example, the movie title in this data:
The formula in H6 to find Year, based on an exact match of movie title, is:
=VLOOKUP(H4,B5:E9,2,FALSE) // FALSE = exact match
Approximate match example
When you want the best match, not necessarily an exact match, you'll want to use approximate mode. For example, below we want to look up a commission rate in the table G5:H10. The lookup values come from column C. In this example, we need to use VLOOKUP in approximate match mode, because in most cases an exact match will never be found. The VLOOKUP formula in D5 is configured to perform an approximate match by setting the last argument to TRUE:
=VLOOKUP(C5,$G$5:$H$10,2,TRUE) // TRUE = approximate match
VLOOKUP will scan values in column G for the lookup value. If an exact match is found, VLOOKUP will use it. If not, VLOOKUP will "step back" and match the previous row. This means table_array must be sorted in ascending order by lookup value to use approximate match.
Caution: If range_lookup is omitted or TRUE and table_array is not sorted by the first column in ascending order, VLOOKUP may return incorrect or unexpected results.
First match only
In the case of duplicate matching values, VLOOKUP will find the first match. In the screen below, VLOOKUP is configured to find the price for the color "Green". There are three rows with the color Green, and VLOOKUP returns the price in the first row, $17. The formula in cell F5 is:
=VLOOKUP(E5,B5:C11,2,FALSE) // returns 17
To retrieve multiple matches in a lookup operation, see the FILTER function.
The VLOOKUP function supports wildcards, which makes it possible to perform a partial match on a lookup value. For instance, you can use VLOOKUP to retrieve information from a table with a partial lookup_value and wildcard. To use wildcards with VLOOKUP, you must use exact match mode by providing FALSE for range_lookup. The formula in H7 retrieves the first name, "Angeline", after typing "Ban*" into cell H4:
Read a more detailed explanation here.
Inside the VLOOKUP function, column_index_num is normally hard-coded as a static number. However, you can also create a dynamic column index by using the MATCH function to locate the needed column. This technique allows you to create a dynamic two-way lookup, matching on both rows and columns. In the screen below, VLOOKUP is configured to perform a lookup based on Name and Month. The formula in H6 is:
For more details, see this example.
Video: Two-way match with VLOOKUP.
The VLOOKUP function does not handle multiple criteria natively. However, you can use a helper column to join multiple fields together, and use these fields like multiple criteria inside VLOOKUP. In the example below, Column B is a helper column that concatenates first and last names together with this formula:
=C5&D5 // helper column
VLOOKUP is configured to do the same thing to create a lookup value. The formula in H6 is:
VLOOKUP and #N/A errors
If you use VLOOKUP you will inevitably run into the #N/A error. The #N/A error means "not found". For example, in the screen below, the lookup value "Toy Story 2" does not exist in the lookup table, and all three VLOOKUP formulas return #N/A:
The #N/A error is useful because tells you something is wrong. The reason for #N/A might be:
- The lookup value does not exist in the table
- The lookup value is misspelled, or contains extra space
- Match mode is exact, but should be approximate
- The table range is not entered correctly
- You are copying VLOOKUP, and the table reference is not locked
To "trap" the NA error and return a different value, you can use the IFNA function like this:
The formula in H6 is:
The message can be customized as desired. To return nothing (i.e. to display a blank result) when VLOOKUP returns #N/A you can use an empty string ("") like this:
You can also use the IFERROR function to trap VLOOKUP #N/A errors. However, be careful with IFERROR, because it will catch any error, not just the #N/A error.
Read more: VLOOKUP without #N/A errors
More about VLOOKUP
- VLOOKUP performs an approximate match by default.
- VLOOKUP is not case-sensitive.
- Range_lookup controls the match mode. FALSE = exact, TRUE = approximate (default).
- If range_lookup is omitted or TRUE or 1:
- VLOOKUP will match the nearest value less than the lookup_value.
- VLOOKUP will still use an exact match if one exists.
- The column 1 of table_array must be sorted in ascending order.
- If range_lookup is FALSE or zero:
- VLOOKUP performs an exact match.
- Column 1 of table_array does not need to be sorted.