| Icon and Description |
| Icon Sets |
| Icons |
| Icons on Toolbars |
| Identify Array Formulas |
| Identify Cell Style |
| Identify Column Letter |
| Identify Format Bar |
| Identify Hidden Cells |
| Identify Number Format |
| Identify Row Number |
| idMso - Ribbon Controls |
| IF - Built-in Function |
| IF - Illustrated Example |
| IF - More Than 7 |
| IF - Nested |
| IF - With Multiple Conditions |
| If Blank |
| If Empty |
| If Formulas |
| IF Function |
| If Is Not |
| If Not Number |
| If Then |
| IF(AND( |
| IF(COUNT(IF |
| IF(OR( |
| IF(SUM( |
| IFERROR - Built-in Function |
| IFNA - Built-in Function |
| IFS - Built-in Function |
| IFS - Illustrated Example |
| Ignore Filtered |
| Ignore Filtered Results |
| Ignore Internet and File Addresses |
| Ignore Negative Values |
| Ignore Words in Uppercase |
| Ignoring Blanks |
| Ignoring Errors |
| Ignoring Null Values |
| Ignoring Text |
| Illustrations |
| Illustrations - Questions |
| IMABS - Built-in Function |
| IMAGE - Built-in Function |
| Image Size and Quality |
| IMAGEDISPLAY - User Defined Function |
| Images |
| Images - Autosize |
| IMAGINARY - Built-in Function |
| Imaginary Numbers |
| Imaginary Numbers - Cosecant |
| Imaginary Numbers - Cosine |
| Imaginary Numbers - Cotangent |
| Imaginary Numbers - Hyperbolic Cosecant |
| Imaginary Numbers - Hyperbolic Cosine |
| Imaginary Numbers - Hyperbolic Secant |
| Imaginary Numbers - Hyperbolic Sine |
| Imaginary Numbers - Secant |
| Imaginary Numbers - Sine |
| Imaginary Numbers - Tangent |
| IMARGUMENT - Built-in Function |
| IMCONJUGATE - Built-in Function |
| IMCOS - Built-in Function |
| IMCOSH - Built-in Function |
| IMCOT - Built-in Function |
| IMCSC - Built-in Function |
| IMCSCH - Built-in Function |
| IMDIV - Built-in Function |
| IMEXP - Built-in Function |
| IMLN - Built-in Function |
| IMLOG10 - Built-in Function |
| IMLOG2 - Built-in Function |
| Implicit Intersection @ |
| Implicit Intersection Operator |
| Implied Volatility |
| Import CSV File |
| Import Data Multiple Worksheets |
| Import External Data |
| Import File |
| Import from Access Database |
| Import from CSV File |
| Import from HTML |
| Import from SQL Server Database |
| Import from Text File |
| Import from XML |
| Import JSON |
| Import TXT File |
| Import Worksheet |
| Import XML |
| Import XML into PDF |
| Importing - Colour Palette |
| Importing & Exporting - Questions |
| Importing Data |
| Importing Data - HTML |
| Importing Data - JSON |
| Importing Data - XML |
| Importing Excel Tables |
| Importing Graphics |
| IMPOWER - Built-in Function |
| IMPRODUCT - Built-in Function |
| IMREAL - Built-in Function |
| IMSEC - Built-in Function |
| IMSECH - Built-in Function |
| IMSIN - Built-in Function |
| IMSINH - Built-in Function |
| IMSQRT - Built-in Function |
| IMSUB - Built-in Function |
| IMSUM - Built-in Function |
| IMTAN - Built-in Function |
| In Cell Chart |
| Inactive Cell |
| Inch Settings |
| Inch to Cm |
| Inches |
| Including Text Inside Formulas |
| Increase by a Percentage |
| Increase Decimal |
| Increase Font Size |
| Increase Indent Button |
| Increase Row Height |
| Increment |
| Incremented Percentages |
| Indent Box |
| Indent Cell Contents |
| Indents |
| INDEX - Built-in Function |
| INDEX - Illustrated Example |
| INDEX and MATCH |
| INDEX and MATCH - Wildcards |
| Index Named Range |
| INDEX, MATCH |
| INDEX, MATCH, MATCH |
| Indic Languages |
| Indicator - Blue Triangle |
| Indicator - Cells |
| Indicator - Green Triangle |
| Indicator - Red Triangle |
| INDIRECT - Built-in Function |
| INDIRECT - Illustrated Example |
| INDIRECT - Referencing Cells Indirectly |
| Indirect with Validation |
| Individual Characters |
| INFO - Built-in Function |
| Infographics |
| Information Functions |
| Information Rights Management (IRM) |
| Ink Replay |
| Ink Tab |