Formulas & Functions Spreadsheets
Prompts
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XLOOKUP Formula Builder With Worked Examples
Write lookup formulas that survive real data.
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INDEX MATCH Two-Way Lookup Builder
Find a value at the intersection of a row and column.
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SUMIFS and COUNTIFS Multi-Criteria Formula Writer
Total and count by several conditions.
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Dynamic Array Formulas: FILTER, SORT, UNIQUE
Replace manual filtering with live formulas.
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Google Sheets QUERY Function Builder
Write SQL-like queries inside a sheet.
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ARRAYFORMULA Patterns for Google Sheets
Apply a formula to a whole column without dragging.
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Text Cleaning Formulas for Messy Data
Fix spaces, case, characters, and formats.
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Splitting and Joining Text Formulas
Combine and separate fields reliably.
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Date Calculation Formulas That Handle Real Cases
Compute ages, deadlines, and durations correctly.
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Conditional Formatting Rule Writer
Highlight what matters with custom rules.
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Data Validation and Dependent Dropdowns
Control inputs and chain dropdown lists.
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IFERROR and Error-Proofing Formulas
Handle errors without hiding real problems.
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Nested IF to IFS and SWITCH Simplifier
Rewrite tangled logic into readable formulas.
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Running Totals and Moving Averages
Track cumulative values and trends.
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Ranking and Percentile Formulas
Rank items fairly and handle ties.
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Return All Matches Lookup Formulas
Pull every row that matches, not just the first.
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Partial Text and Approximate Matching
Match names that are not exactly the same.
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Formula Debugging Interview
Find why a formula returns the wrong answer.
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Formula Explainer: Break It Down Step by Step
Understand a complicated formula you inherited.
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LET and LAMBDA for Readable Formulas
Name intermediate values and build reusable functions.
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Cross-Sheet Consolidation Formulas
Combine data from several sheets or files.
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Financial Functions Walkthrough: PMT, NPV, IRR
Use finance formulas correctly with examples.
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Statistical Functions for Beginners
Describe data with the right measures.
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Inventory and Reorder Formulas
Calculate stock, reorder points, and order quantities.
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Attendance and Schedule Formulas
Track hours, shifts, and absences.
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Gradebook Formulas for Teachers
Calculate weighted grades and flag students.
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Commission and Tiered Pricing Formulas
Calculate bonuses and bracketed rates correctly.
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Currency and Unit Conversion Formulas
Convert reliably and keep rates auditable.
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Regular Expression Formulas in Google Sheets
Extract and validate text patterns.
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IMPORTRANGE and Data Import Setup
Pull data from other files safely.
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KPI Dashboard Formulas
Compute the numbers that drive a dashboard.
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Duplicate Detection and Removal Formulas
Find, flag, and handle repeated records.
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Excel to Google Sheets Formula Translation Table
Move formulas between apps without surprises.
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Array Formula Performance Review
Speed up slow workbooks.
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Named Ranges and Structured References Setup
Make formulas readable and resilient.
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Checks and Reconciliation Formulas
Build self-checking sheets.
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Formula Test Case Builder
Create test data that proves a formula works.
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Business Day and Holiday Calendar Formulas
Handle deadlines around weekends and holidays.
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Spill and Dynamic Range Troubleshooting
Fix #SPILL! errors and unstable ranges.
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Pivot Table Alternatives Using Formulas
Build live summaries without a pivot table.
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