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Addresses and Ranges

The "Common Spreadsheet Format" (CSF) is the object model used by SheetJS.

Cell Addresses

Cell address objects are stored as {c:C, r:R} where C and R are 0-indexed column and row numbers, respectively. For example, the cell address B5 is represented by the object {c:1, r:4}.

Cell Ranges

Cell range objects are stored as {s:S, e:E} where S is the first cell and E is the last cell in the range. The ranges are inclusive. For example, the range A3:B7 is represented by the object {s:{c:0, r:2}, e:{c:1, r:6}}.

Column and Row Ranges

A column range (spanning every row) is represented with the starting row 0 and the ending row 1048575:

{ s: { c: 0, r: 0 }, e: { c: 0, r: 1048575 } } // A:A
{ s: { c: 1, r: 0 }, e: { c: 2, r: 1048575 } } // B:C

A row range (spanning every column) is represented with the starting col 0 and the ending col 16383:

{ s: { c: 0, r: 0 }, e: { c: 16383, r: 0 } } // 1:1
{ s: { c: 0, r: 1 }, e: { c: 16383, r: 2 } } // 2:3

Common Spreadsheet Address Styles

A1-Style

A1-style is the default address style in Lotus 1-2-3 and Excel.

Columns are specified with letters, counting from A to Z, then AA to ZZ, then AAA. Some sample values, along with SheetJS column indices, are listed:

OrdinalA1 NameSheetJS
FirstA0
SecondB1
26thZ25
27thAA26
702stZZ701
703rdAAA702
16384thXFD16383

Rows are specified with numbers, starting from 1 for the first row. SheetJS APIs that take row indices start from 0 (ECMAScript convention).

A cell address is the concatenation of column text and row number. For example, the cell in the third column and fourth row is "C4".

A cell range is represented as the top-left cell of the range, followed by :, followed by the bottom-right cell of the range. For example, the range "C2:D4" includes 6 cells marked with ▒ in the table below:

ABCDE
1
2
3
4
5

A column range is represented by the left-most column, followed by :, followed by the right-most column. For example, the range C:D represents the third and fourth columns.

A row range is represented by the top-most row, followed by :, followed by the bottom-most column. For example, 2:4 represents the second/third/fourth rows.

A1 Utilities

Column Names

Get the SheetJS index from an A1-Style column

var col_index = XLSX.utils.decode_col("D");

The argument is expected to be a string representing a column.

Get the A1-Style column string from a SheetJS index

var col_name = XLSX.utils.encode_col(3);

The argument is expected to be a SheetJS column (non-negative integer).

Row Names

Get the SheetJS index from an A1-Style row

var row_index = XLSX.utils.decode_row("4");

The argument is expected to be a string representing a row.

Get the A1-Style row string from a SheetJS index

var row_name = XLSX.utils.encode_row(3);

The argument is expected to be a SheetJS column (non-negative integer).

Cell Addresses

Generate a SheetJS cell address from an A1-Style address string

var address = XLSX.utils.decode_cell("A2");

The argument is expected to be a string representing a single cell address.

Generate an A1-style address string from a SheetJS cell address

var a1_addr = XLSX.utils.encode_cell({r:1, c:0});

The argument is expected to be a SheetJS cell address

Cell Ranges

Generate a SheetJS cell range from an A1-style range string

var range = XLSX.utils.decode_range("A1:D3");

The argument is expected to be a string representing a range or a single cell address. The single cell address is interpreted as a single cell range, so XLSX.utils.decode_range("D3") is the same as XLSX.utils.decode_range("D3:D3")

Generate an A1-style address string from a SheetJS cell address

var a1_range = XLSX.utils.encode_range({ s: { c: 0, r: 0 }, e: { c: 3, r: 2 } });

The argument is expected to be a SheetJS cell range.