Often you'll want to insert a series of dates into a worksheet. The most efficient way to enter a series of dates doesn't require any formulas - just use Excel's AutoFill feature.

If you want to paste text in your worksheet, you can use Excel's Convert Text to Columns Wizard.

Solver tool allows you to specify multiple adjustable cells and constraints on the values that the adjustable cells can have, generate a solution that maximizes or minimizes a particular worksheet cell, generate multiple solutions to a problem.

Goal seeking is a useful feature that works in conjunction with your formulas. If you know what a formula result should be, Excel can tell you which values of one or more input cells you need to produce that result.

Because timestamps are represented as serial numbers, you can subtract the earlier time from the later time to get the difference.

When calculating the difference between two dates, you may want to exclude weekends and holidays.

Excel includes a variety of built-in formats that cover general, numeric, currency, percentage, exponential, date, time, and custom numeric formats. You can also design your own custom formats based on one of the built-in formats.

You can greatly reduce data-entry problems in your workbooks by making Excel check entries before entering them in specific cells. To do so, you need to define restrictions and data-validation rules for those cells.

By default, the number of Undo levels in Excel for Microsoft 365 is 100. You can increase or decrease this number if it's necessary.

Excel's ability to create automatic subtotals is a handy feature that can save you a great deal of time.