Math & Statistics · Browser · Free

Addition Table

Set how many rows and columns you want, then press Calculate to fill a grid where each cell is the row number added to the column number.

What this tool does

Two number fields take the shape of the grid: Number of rows and Number of columns. Nothing is worked out beforehand — the grid is built only when you press the Calculate button, and the results appear in cards below that button.

Each card row is printed with its row number first, then the values across it. For Number of rows: 3, columns: 4 the result is 1: 2 3 4 5; 2: 3 4 5 6; 3: 4 5 6 7. Setting Number of rows: 50, Number of columns: 50 follows the same pattern over a wider grid.

Use Copy to send a result and its unit to the clipboard, and Clear to reset the form back to 12 rows and 12 columns.

The addition table formula

Every cell of the grid follows cell(r, c) = r + c, where r is the row number and c is the column number, so the value grows by one step to the right and one step down.

With Number of rows: 12, Number of columns: 12 the first line reads 1: 2 3 4 5 6 7 8 9 10 11 12 13, and the next line starts at 3 because its row number is 2. The smallest grid, Number of rows: 1, Number of columns: 1, gives the single value 1: 2.