Multiple Conversion Formats
Convert audio files such as M4A, MP3, and WAV; video files such as MP4, WEBM, and MOV; and images such as JPG, PNG, and WEBP into formats suited to your needs.
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Excel & Table Tools
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Easy for BeginnersFile Selection Type
Merge Multiple Excel Files
Copy all sheets from multiple XLSX files into one workbook.
Excel & DataMerge
Easy for BeginnersFile Selection Type
Split Excel Sheets into Separate Files
Split each sheet in an Excel workbook into a separate XLSX file and package them in a ZIP.
Excel & DataSplit
Easy for BeginnersFile Selection Type
Merge Multiple CSV Files
Combine the headers and rows of multiple CSV files into a single UTF-8 CSV file.
Excel & DataMerge
Easy for BeginnersFile Selection Type
Remove Duplicate Table Rows
Remove exact duplicate rows from CSV or XLSX files, keeping one copy of each.
Excel & DataOrganize
Easy for BeginnersFile Selection Type
Remove Empty Rows & Columns
Find and delete empty rows and columns.
Excel & DataOrganize
Easy for BeginnersFile Selection Type
Standardize Phone Number, Date, and Amount Formats
Automatically standardize phone numbers, dates, amounts, and whitespace in a table.
Excel & DataOrganize
Easy for BeginnersFile Selection Type
Compare Two Excel Files
Exports differing cells, their rows and columns, and their previous and new values to XLSX.
Excel & DataCompare
Easy for BeginnersFile Selection Type
Split Columns
Split the selected column into multiple columns using a delimiter.
Excel & DataColumn Operations
Easy for BeginnersFile Selection Type
Merge Columns
Combine multiple columns using a specified delimiter to create a new column.
Excel & DataColumn Operations
Easy for BeginnersFile Selection Type
Split Large CSV Files
Split a CSV into files with the specified number of rows and save them as a ZIP archive.
Excel & DataSplit
Everything from file conversion to calculations and diagnostics in one place
REGOLITH is more than a collection of links. It provides functional web tools that take you from entering data and running tasks to reviewing and saving results. Original files remain unchanged, with results created separately. Each tool page explains supported formats, usage steps, and how to review results before you begin.
Getting Started Guide
Instructions for selecting files, configuring options, running tools, and saving results are available on a separate guide page and within each tool.
Detailed Task Descriptions
Provides format characteristics, recommended uses, guidelines for verifying calculation results, and precautions for handling sensitive files.