Excel: Conditional Formatting — Highlight Important Data Automatically

Conditional formatting automatically changes the color or format of cells based on their values — making it easy to spot trends, outliers, and important data at a glance. Where to find it: Home tab > Conditional Formatting Basic example — highlight values over a threshold: 1. Select the range of cells (e.g. B2:B50) 2. Home > Conditional Formatting > Highlight Cells Rules > Greater Than 3. Enter a value (e.g. 1000) and choose a color (e.g. red fill) 4. Click OK — any cell over 1000 turns red automatically Common built-in rules: - Greater Than / Less Than / Between — highlight cells above, below, or between thresholds - Equal To — highlight exact matches (useful for flagging specific values or text) - Text That Contains — highlight cells containing a specific word - Duplicate Values — find and highlight duplicates in a list - Dates Occurring — highlight cells with today's date, last week, this month, etc. Color Scales (heat map effect): Home > Conditional Formatting > Color Scales — applies a gradient (e.g. green to red) across a range, so the highest values are green and lowest are red (or vice versa). Great for quickly visualizing performance across a list. Data Bars: Home > Conditional Formatting > Data Bars — adds a bar inside each cell proportional to its value. Like a built-in bar chart inside your cells. Icon Sets: Home > Conditional Formatting > Icon Sets — adds colored arrows or traffic light icons to cells based on their value. Useful for status dashboards. Managing rules: Home > Conditional Formatting > Manage Rules — view, edit, or delete all existing rules on the selected cells or sheet. Clearing rules: Home > Conditional Formatting > Clear Rules > Clear Rules from Selected Cells (or Entire Sheet) Tip: Conditional formatting updates automatically as data changes — you set it once and it keeps working.