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In the "Total" column, use the formula =C2*D2 (Quantity × Price). Drag this down for all items.

Instead of just saving a regular file, go to File > Save As and choose Excel Template (.xltx) . This lets you open a fresh, blank version every time you start a new project. Free Excel spreadsheet templates

A top resource for professional business templates. You can find highly detailed Project Estimate Templates that work perfectly for smetas.

Select your data and press Ctrl+T . This makes your smeta look professional and allows for easy filtering.