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Keep Leading Zeros

Stop Excel from dropping leading zeros in ZIP codes and IDs from CSV files.

Coming soon Next update Runs in your browser · No upload

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Spreadsheets & Data · Coming soon

Excel Viewer Coming soonOpen XLSX, XLS and ODS files without Excel and browse every sheet. CSV Viewer Coming soonOpen large CSV and TSV files as a searchable table, even past Excel's row limit. Fix CSV Encoding Coming soonConvert CSV between UTF-8 and legacy encodings so it opens cleanly in Excel. Remove Duplicate Rows Coming soonFind and remove duplicate rows in Excel or CSV based on the columns you pick. Remove Blank Rows & Columns Coming soonDelete empty rows and columns from Excel or CSV files in one step. Trim Spaces in Excel Coming soonStrip leading, trailing, double and non-breaking spaces and stray line breaks. Phone Number Formatter Coming soonNormalize mixed Korean phone numbers to one format, such as 010-1234-5678. Address Cleaner & Splitter Coming soonTidy Korean addresses and split them into region, district and detail columns. Fix Long Numbers in Excel Coming soonKeep long IDs in CSV from turning into 1.23E+15 or losing digits in Excel.

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