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My Excel workbooks suffer from frequent duplicate records, inconsistent formatting, and other invalid values spread across multiple sheets. I need a specialist who can systematically scan every column and row, eliminate duplicates, apply consistent number/date/text formats in line with my basic house-style rules, and flag or correct any entries that fall outside logical ranges. The datasets are large, so I expect you to lean on efficient methods—Power Query, VBA macros, or advanced formula workflows—rather than manual spot-fixing. Once complete, the file should open without errors, pass a quick filter test for duplicates, and display uniform cell styles throughout. Deliverables: • A fully cleansed, consistently formatted Excel workbook. • A brief change log summarising what was removed, corrected, or standardised (CSV, TXT, or an extra sheet is fine). I will share the original file and a short outline of the few formatting conventions I already follow; everything else is up to your expertise.
Projekt-ID: 40354364
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44 Freelancer bieten im Durchschnitt $360 USD für diesen Auftrag

With a solid background in data analysis, specifically in Excel, I understand the importance of having clean and well-structured data. I have significant experience assisting clients with similar challenges to yours - from duplicate records to inconsistent formatting. My approach is to employ efficient methods like Power Query, VBA macros, or advanced formula workflows to systematically scan every column and row, eliminate duplicates, and apply consistent formats. I can also develop custom validation rules using VBA or formulas to flag or correct entries that fall outside logical ranges. Given the nature of your large datasets, I'm confident in my ability to employ methods that maximize efficiency while minimizing manual spot-fixing. My background includes building dynamic tracking tools and automation tools in Excel that can be tailored to handle your specific needs. I can ensure that the cleansed workbook will open without errors, pass filter tests for duplicates, display uniform cell styles throughout. I've offered a variety of services throughout my career, including financial analysis and planning with tools like Power BI and Tableau. This gives me a unique advantage in terms of not just cleaning up your data but also providing you with valuable insights as highlighted in my free-of-cost demo offer. With me, you get not just an expert but a problem solver committed to going above and beyond your expectations.
$250 USD in 1 Tag
7,6
7,6

Hi, I can deliver an Excel workbook that is clean, reliable, and ready for ongoing use with large datasets across multiple sheets. What you will get: • duplicate detection and removal based on the right business logic, not just exact-match deletion • consistent formatting for dates, numbers, text, and cell structure based on your house-style rules • validation checks to identify invalid values, out-of-range entries, blanks, broken patterns, and inconsistencies between sheets • an efficient solution using Power Query, VBA, formulas, or the best combination for speed and repeatability • a final workbook that is easier to filter, audit, refresh, and maintain • a clear change log showing what was corrected, standardized, flagged, or removed My background is strongly aligned with this work: 35+ years in finance, reporting, data control, Excel automation, VBA, Power Query, and reconciliation-oriented data review. I build files that are not only cleaned once, but structured so future updates are much easier and safer. If useful, I can also integrate ChatGPT API into the Excel/VBA solution to generate insights from text and numbers, classify records, explain anomalies, or support smart validation rules. I focus on accuracy, performance, and a practical result you can actually keep using after delivery. Best regards, Dov
$300 USD in 7 Tagen
7,5
7,5

Hi there, I’ve carefully reviewed your project and understand you need a robust, systematic cleanup of large Excel workbooks; removing duplicates, enforcing consistent formats, and identifying invalid or out-of-range values across multiple sheets without relying on manual fixes. My approach begins with profiling the data using Power Query to detect duplicates, inconsistencies, and anomalies across all columns. I will then implement automated cleansing pipelines to remove duplicate records based on defined keys, standardize formats (dates, numbers, text), and normalize inconsistent entries according to your house rules. Next, I will apply validation logic using a combination of Power Query transformations, Excel formulas, and where needed VBA macros to flag or correct outliers and invalid values efficiently at scale. This ensures the workbook remains stable even with large datasets. I will also structure the final file with clean formatting, consistent styles, and error-free calculations, ensuring it passes duplicate checks and filter tests seamlessly. Finally, I will provide a concise change log summarizing all removals, corrections, and standardizations for full transparency. Before I begin, do you have specific rules for identifying duplicates (e.g., unique ID, combination of fields), or should I define the logic during profiling? Let’s get your data clean, consistent, and analysis-ready. Warm regards, Aneesa.
$250 USD in 2 Tagen
6,9
6,9

Hi, I am a skilled Excel professional from Vietnam with 25+ years of experience. I can help you organize and clean your Excel spreadsheet according to your specific rules. I am available online most of the time and respond to messages within 12-24 hours. How can I help you with your Excel task? Best regards, Duong
$250 USD in 10 Tagen
7,0
7,0

Got it. We mainly focus on advanced Excel data cleaning and standardization, especially for large, multi-sheet workbooks like yours. We use our own in-house data cleansing and validation tool that delivers up to 99% accuracy, allowing us to efficiently identify and remove duplicates, correct invalid values, and enforce consistent number, date, and text formats across the entire dataset. Combined with Power Query and structured workflows, this ensures your workbook is not only clean but also scalable and reliable. Once complete, your file will be fully standardized, error-free, and ready for use, with duplicates eliminated and all data aligned to your formatting rules. We’ll also include a clear change log outlining what was removed, corrected, or standardized for full transparency. Could you share the workbook and your formatting guidelines so we can review the structure and confirm the best approach and turnaround time?
$250 USD in 7 Tagen
6,9
6,9

As an experienced data analyst and automation specialist, tackling your extensive Excel data challenges falls well within my skillset. Over the course of my 8+ years in the industry, I've honed my proficiency in the most efficient means of handling and transforming large datasets. By utilizing tools like Power Query, VBA macros, and advanced formulas, I can sort through your Excel files to systematically cleanse and standardize them—eliminating duplicates, applying uniform formatting, and identifying any entries outside logical ranges. Let’s connect
$260 USD in 3 Tagen
5,7
5,7

Greetings, I noticed you mentioned dealing with duplicate records and inconsistent formatting in your Excel workbooks. It's frustrating when data gets messy, especially across multiple sheets. I can help you clean and standardize your datasets using efficient methods like Power Query and VBA macros. This way, we can ensure everything is consistent and logical without the hassle of manual fixes. Once I receive your original file and the outline of your formatting rules, I’ll systematically go through the data, eliminate duplicates, and apply your desired styles. I’ll also provide a change log to summarize what’s been adjusted, so you have a clear record of the updates made. Looking forward to helping you get your Excel workbooks in top shape! Best regards, Saba Ehsan
$350 USD in 5 Tagen
4,5
4,5

Hello, I can systematically cleanse and validate your Excel workbooks, removing duplicates, standardizing formats, and flagging or correcting invalid entries. I will leverage Power Query, VBA macros, and advanced formulas to efficiently process large datasets, ensuring consistency across all sheets. The final deliverable will be a fully error-free, uniformly formatted Excel workbook, accompanied by a concise change log summarizing all corrections, removals, and standardizations. This approach ensures your data is clean, reliable, and ready for analysis or reporting. Thanks, Asif
$750 USD in 10 Tagen
4,7
4,7

Hi, I have carefully read your project description and I understand that you need a specialist to cleanse and validate your Excel data by eliminating duplicates, applying consistent formatting, and correcting any invalid entries. As a professional with over 10 years of experience in data management and Excel, I specialize in efficiently using tools like Power Query, VBA macros, and advanced formulas to ensure accurate and uniform datasets. Before I begin, I will ensure a thorough understanding of your data structure, house-style rules, and logical ranges to deliver a fully cleansed and consistently formatted Excel workbook. Additionally, I will provide a detailed change log outlining all modifications made. My goal is to not only meet but exceed your expectations by delivering error-free data that aligns with your requirements. I would be happy to discuss your project further and can start immediately. Best regards, Samina Kiran
$250 USD in 2 Tagen
4,2
4,2

Hi there, I understand you need a specialist to systematically clean large Excel workbooks by removing duplicates, standardizing formats, and correcting or flagging invalid values across multiple sheets. With strong expertise in Excel, Power Query, VBA, and data cleansing workflows, I can deliver a fast, reliable solution that ensures your dataset is accurate, consistent, and analysis-ready. My approach will begin with profiling your data across all sheets to identify duplicate patterns, inconsistent formats, and invalid ranges. Next, I will implement an efficient, scalable solution using Power Query and/or VBA to remove duplicates, standardize number/date/text formats based on your house rules, and validate entries against logical thresholds. Finally, I will test the workbook to ensure it opens error-free, passes duplicate checks, and maintains uniform formatting, along with providing a clear change log summarizing all corrections and standardizations. Deliverable: A fully cleansed and consistently formatted Excel workbook, along with a concise change log detailing duplicates removed, formatting applied, and invalid values corrected or flagged. QUESTION: Would you like the solution to be built as a reusable workflow (e.g., Power Query/VBA) so future datasets can be cleaned automatically using the same rules? Let’s get started and make your dataset clean, consistent, and fully reliable! Regards, Shehwani
$250 USD in 1 Tag
4,4
4,4

With extensive experience in data analysis and cleansing—and a special emphasis on Excel—I'm confident I can deliver exceptional results for your project. I've worked with large datasets before, utilizing efficient methods such as Power Query, VBA macros, and advanced formula workflows to streamline the process—significantly reducing the need for manual spot-fixing. This ensures speed, accuracy, and uniformity throughout the workbook. In addition to cleansing your data, I am adept at following specific formatting conventions and can easily adapt to yours. My proficiency with Excel's functions, formulas, formatting, and more will guarantee consistent and error-free numeric/date/text layouts. Finally, I'll provide you with a comprehensive change log documenting every removal, correction, or standardization. Choose me for this project and benefit from my dedication to quality, my commitment to meeting deadlines even under pressure, and my availability round-the-clock. With me on board, you’re not just getting an expert in data cleansing; you’re getting a highly-skilled professional who can take care of all your administrative needs—from CV writing to graphic design; I do it all. Your satisfaction is my number one priority!
$250 USD in 1 Tag
4,2
4,2

I have successfully managed several complex Excel restructuring projects where data integrity was severely compromised by manual entry errors, legacy formatting issues, and duplicate records. Recently, I streamlined a 50,000-row workbook, transforming it from a cluttered, unreliable source into a high-performance, pivot-ready dataset by implementing robust automated deduplication and strict validation protocols. My primary goal is to resolve your current "invalid" entries and transform them into a structured, reliable environment that supports accurate reporting while ensuring the final architecture remains scalable and easy for your team to navigate. To address your immediate technical challenges, I will first utilize Power Query to perform a deep-clean, identifying and isolating duplicate records through multi-column unique identifiers to ensure zero data loss during the reconciliation process. Next, I will standardize all inconsistent fields—such as mismatched date formats, irregular casing, and conflicting currency symbols—using a combination of advanced nested formulas and custom VBA scripts to enforce absolute uniformity across all worksheets. Finally, I will implement dynamic Data Validation rules and conditional formatting to proactively flag future entry errors, effectively future-proofing your workbooks against the recurrence of the data degradation issues you are currently facing. Does your current dataset involve complex external links, Power Pivot models, or hidden dependencies that must remain intact throughout the cleansing process? Furthermore, do you have a specific set of naming conventions or organizational standards you would like me to prioritize to ensure the output aligns perfectly with your internal reporting requirements? I am available to jump on a brief chat to review a sample of your file and provide a refined roadmap for restoring your data’s accuracy; feel free to message me whenever you are ready to begin.
$560 USD in 21 Tagen
4,0
4,0

Hello, I can help you clean and standardize your Excel workbooks efficiently using advanced, automated methods. I understand the issues with duplicates, inconsistent formatting, and invalid values across multiple sheets, and I will ensure a fully structured and error-free dataset. Instead of manual fixes, I will use Power Query, advanced formulas, and VBA macros where needed to scan all rows and columns, remove duplicates, enforce consistent formats (dates, numbers, text), and identify or correct out-of-range values based on logical rules. My approach ensures: Accurate duplicate detection and removal across sheets Uniform formatting aligned with your house-style rules Validation checks to flag and fix inconsistent or invalid data Clean structure optimized for filtering and future use You will receive: • A fully cleansed and well-structured Excel workbook • A clear change log summarizing all corrections, removals, and standardizations I focus on efficiency, accuracy, and automation, especially for large datasets, ensuring your file opens cleanly and passes all validation checks. I am ready to start immediately and deliver within your timeline. Best regards, Rajaoul Haque M.
$250 USD in 7 Tagen
3,8
3,8

As an experienced freelancer of over 17 years, with a track record that commands over €500,000+ in project value, and clientele in more than 200 countries worldwide, I am confident I would be the perfect candidate for your Excel Data Cleansing & Validation project. My core skills revolve around data analysis, cleansing and processing, and I utilize advanced tools such as Power Query, VBA macros, and formula workflows to ensure efficiency when working with large datasets. What sets me apart from others is my dedication to quality. While it's true that anyone can clean and format data, my meticulous nature ensures I do so reliably and consistently to meet your basic house-style rules. What's more? I always provide a comprehensive change log – an added value that's particularly helpful when dealing with massive datasets. Moreover, unlike some freelancers who outsource work or have a large team, you'll be working directly with me – the company owner – ensuring confidentiality, reliability and seamless communication throughout the project. And don't worry about time zone differences - I pride myself on being available 24/7 to cater to clients' schedules situated across different time zones. I will invest my expert resources into creating a fully cleansed, correctly formatted workbook that opens without errors and passes all essential filters. So why wait any longer? Choose me, for superior qualidade!
$500 USD in 30 Tagen
3,4
3,4

As an experienced digital marketer adept at diving deep into data, I believe I possess the necessary skills in data analysis required to effectively tackle your project on Excel Data Cleansing and Validation. My digital marketing background has made me familiar with handling large datasets for optimization purposes, therefore, I understand the importance of accuracy and efficiency. I have a proven track record in utilizing various tools and techniques such as Power Query, VBA macros, and advanced formula workflows to clean up huge volumes of data in record time. What's more, my familiarity with Google Ads also means that I'm comfortable working with different types of metrics including numbers, dates, and text - a vital skill for translation from one format to another. Finally, I value transparent and efficient communication that ensures timely delivery. This means that not only will your datasets be prepared with precision and consistency but you'll also receive regular updates on the changes made through change logs. With my wide-ranging experience in using Excel for data-driven decision-making in diverse industries including real estate, healthcare, travel amongst others; you can trust me to bring these skills to bear on your project. Let's get started on making your Excel workbooks pristine once again!
$250 USD in 5 Tagen
3,0
3,0

Hello, I can help you with cleaning the Excel sheet with correct formatting as per the instructions provided by you I will first have a thorough review of the data and structure and then go ahead with cleaning using VBA Power Query within 24 hours. Happy to help. Best, Raj
$300 USD in 1 Tag
2,7
2,7

Hello, I’m interested in your Excel data cleansing project. I have strong experience working with large, complex workbooks and specialize in identifying inconsistencies, removing duplicates, and standardizing data using efficient, scalable methods. I understand the task clearly — scanning all sheets to eliminate duplicate records, enforce consistent formatting (dates, numbers, and text), and identify or correct invalid values based on logical rules. I will ensure the final workbook is clean, uniform, and free from errors, with all columns behaving correctly under filtering and validation. I will also provide a clear change log summarizing all key actions taken, including duplicates removed, formatting standardizations, and any anomalies flagged or corrected. I’m comfortable handling large datasets and can ensure a structured, reliable result that’s ready for immediate use. I’m also happy to review a sample file if you’d like to confirm the approach beforehand. Looking forward to working with you. Best regards, Lekha
$300 USD in 2 Tagen
2,2
2,2

Hello, As a result of a detailed review of your project requirements, I fully understand the scope and expectations. I have experience handling similar Excel cleanup and data standardization projects, and I’m available to start your project right now. I bring deep expertise in Excel, VBA, Excel Macros, Data Cleansing, Data Processing, Data Analysis, and Data Management, with over 10 years of experience, and I’m here to help you turn the workbook into a clean, reliable file that is easy to use and verify. One of the key challenges in projects like this is cleaning large multi-sheet datasets without introducing new errors or inconsistencies. I can use efficient Excel-based methods such as Power Query, VBA, and formula-driven validation to remove duplicates, standardize number, date, and text formats, and flag or correct invalid values based on logical rules, with a short change log showing exactly what was updated. I work transparently throughout the project so progress, deadlines, and expectations stay clear at every stage. I have a couple of quick questions. • Approximately how many sheets and rows are included in the workbook? • Should corrected invalid values be highlighted for review, or do you want them directly normalized wherever possible? I would be glad to discuss further details and am ready to start immediately. Looking forward to hearing from you. Best regards, Carlos
$250 USD in 5 Tagen
1,8
1,8

Hi there. Are the duplicate issues caused by repeated IDs across sheets, or by rows that look similar but are not exact matches? Do you want the cleanup done directly in the workbook with Power Query or VBA, or should I also leave reusable validation logic for future files? This is the kind of Excel task where structure matters more than manual editing. A proper cleanup flow can remove duplicates, standardize formats, validate logical ranges, and leave the workbook stable and easy to maintain. Worked on similar Excel files with large multi-sheet datasets where duplicates, bad formats, and invalid values kept breaking reporting. The main challenge was cleaning everything consistently without damaging valid records or creating new mismatches. That was solved by using Power Query, formulas, and VBA where needed to normalize values, validate fields, and generate a clear change log. Strong experience with Excel data cleansing and validation helps deliver a reliable and reusable result quickly. Best, Ivan
$500 USD in 5 Tagen
1,4
1,4

I'll build you a comprehensive Excel data cleansing solution using VBA macros combined with Power Query for maximum efficiency on large datasets. My approach will create automated detection algorithms for duplicates based on configurable similarity thresholds, standardized formatting rules that can be applied across multiple workbooks, and intelligent data validation that flags outliers while preserving edge cases that might be legitimate. Beyond basic duplicate removal, I'll implement fuzzy matching for near-duplicates (like 'John Smith' vs 'J. Smith'), conditional formatting preservation for your house style, and create a detailed audit trail showing exactly what was changed and why. The solution will include batch processing capabilities so you can apply the same cleansing rules to future workbooks with a single click, plus validation reports that highlight potential data quality issues before they become problems.
$500 USD in 7 Tagen
1,1
1,1

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