In Excel: multiply two cells with =A2*B2, multiply a range with =PRODUCT(A2:A10), and copy the formula down when each row needs its own result.
On this page7
Click the result cell.
Type =, select the first value, type *, then select the second value.
Press Enter and format the result if it represents currency or units.
Drag or double-click the fill handle to copy the multiplication formula down a table.
What this does
Excel uses the asterisk (*) as the multiplication operator. For one row, multiply cell references directly; for many values in one formula, PRODUCT multiplies every number in a range. Because cell references adjust as you copy down, a single row formula can calculate quantity times price for an entire table. Most people learn this as a sequence of clicks and forget it by next week; learning it as a pattern instead is what lets you apply it to the next, slightly different version of the problem without starting from scratch. That is the difference this page is trying to make. For “multiply a column by a number in excel”, the reliable version is a short checking loop, not just the first command that appears to work. Run it on a deliberately small range first, watch how the affected columns change, and only then apply the same setup to the full sheet. When a formula is involved, keep the inputs labelled beside it, reference cells instead of typing values, and apply number formatting only after the result checks out. That is what makes a layout choice that keeps the sheet readable and sortable useful in real work: repeatable, auditable, and not dependent on memory or luck.
A worked example
Quantity is in A2 and unit price is in B2. Enter =A2*B2 in C2: 12 units at 4.50 returns 54.00. Fill the formula down and row 3 becomes =A3*B3 automatically. If A2:A5 holds 2, 3, 4 and 5, =PRODUCT(A2:A5) returns 120. Multiplication is the backbone of pricing sheets, inventory totals, unit conversions, weighted scores and any model where a count has to be scaled by a rate, price, percentage or factor. Check the referenced cells, argument order and result type in your workbook. Start with the worked example before changing an input, then compare the changed result with the calculation you expected. An error value or a result of a different type is a reason to inspect the inputs and arguments.
In Google Sheets
Google Sheets support for this task has not been verified. Check the function, arguments and workflow in the target product before transferring the example. Matching formula notation does not establish identical behaviour. Nothing on this page is behind a login or a download: the exact answer is at the top, and the detail below it is there for when you need it. That is the whole promise here — the answer first, and just enough context to make it stick. For “multiply a column by a number in excel”, keep the input cells and the result visible while you check the formula in Excel. Follow the worked example and change one input at a time. The steps explain the workbook calculation; this page does not run a live calculator for that task.
Common mistakes
- Using x instead of *; Excel treats x as text or a name, not multiplication.
- Forgetting parentheses when multiplying part of a larger expression, such as
=(A2+B2)*C2. - Copying a formula with fixed references accidentally; use $ only when one multiplier should stay constant.
- Multiplying numbers stored as text, which can return errors or unexpected zeros until the data is converted.
Frequently asked questions
What symbol multiplies in Excel?
Use the asterisk: =A2*B2.
How do I multiply a whole column by one number?
Put the multiplier in one cell, use an absolute reference like =A2*$E$1, then fill down.
When should I use PRODUCT?
Use PRODUCT when one formula needs to multiply many cells or a whole range, such as =PRODUCT(A2:A10).