In Excel: select the cells, then grab the small green square at the bottom-right corner — the fill handle — and drag it down or across to copy values or extend a series; double-click it to fill down to the end of the adjacent data.
On this page7
Enter enough values to define the pattern (one cell to copy, two cells for a series).
Select those cells so the fill handle appears at the bottom-right.
Drag the handle down or across, or double-click it to fill down to the end of the adjacent data.
Click the AutoFill Options button to pick Copy Cells, Fill Series, or Fill Formatting Only.
Use Ctrl+D to fill down or Ctrl+R to fill right without dragging.
What this does
The fill handle is the small green square at the bottom-right corner of a selection. Dragging it copies the selected cells or extends a detected series, and double-clicking it fills down to the bottom of the data in the neighboring column. AutoFill reads the pattern in what you selected — 1, 2, 3… or Jan, Feb… — and continues it. Ctrl+D fills the selection down from the cell above; Ctrl+R fills right. After a drag, the AutoFill Options button appears so you can switch between Copy Cells, Fill Series, and Fill Formatting Only. Before you run it on a workbook other people depend on, try it on a copy or a few rows first. Undo only reaches back through the current session, so a quick trial run is the cheapest way to see exactly what will change before the file is saved and shared. The difference between a quick fix and a sheet you can trust is the extra minute you spend validating “drag cells in excel”. Start on a copy or a tiny sample, keep the affected cells visible, and compare the result with the tool above before you touch the real workbook. When this is a ribbon command, the selection matters more than the button: confirm the range, apply the command, then spot-check the output before saving. The point is a layout choice that keeps the sheet readable and sortable, but the practical win is that someone else can open the file and understand what happened without asking you.
A worked example
Type 1 in A1 and 2 in A2, select both cells, then drag the fill handle down — Excel reads the step of 1 and continues 3, 4, 5… If you instead dragged a single cell containing 1, it would copy 1, 1, 1 until you switch to Fill Series. Dragging the fill handle is the fastest way to repeat a value or build a numbered or dated series down a column without typing each cell. If this is something you do often, add the command to the Quick Access Toolbar (right-click it on the ribbon and choose Add to Quick Access Toolbar) or learn its shortcut, so next time it is one click instead of a hunt through the menus.
In Google Sheets
This is a command rather than a formula, so there is no syntax to carry over. Google Sheets arranges its commands in menus across the top instead of a ribbon, names some of them differently and does not have every Excel command — look for the equivalent in the Sheets menus or its help before assuming the steps match. Keep this page bookmarked for the next time the same question comes up. Better still, repeat the steps once in your own workbook — doing it yourself is what turns a copied answer into something you remember. Here is the takeaway for “drag cells in excel”: follow the steps at the top, check the result on the sheet itself, and keep undo in mind while you experiment. Done once deliberately, it becomes something you do from memory in Excel rather than something you search for again.
Common mistakes
- Dragging one cell and expecting a series — a single cell copies; give it two cells to set the step.
- Double-clicking the handle when the adjacent column has gaps, so the fill stops early.
- Ignoring the AutoFill Options button when Excel guessed copy instead of series.
- Holding the wrong corner — the move pointer (four arrows) drags the cell, not the fill handle.
Frequently asked questions
Where is the fill handle?
It is the small green square at the bottom-right corner of the selected cell or range.
How do I fill down without dragging?
Select the range and press Ctrl+D to fill down, or Ctrl+R to fill right.
Why does my drag copy instead of counting up?
A single starting cell copies. Enter two values first, or open AutoFill Options and choose Fill Series.