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Keep Only Numbers Guide
Learn when to use Keep Only Numbers, how to use it correctly, and how to avoid common mistakes.
What this guide covers
Use this keep only numbers tool to extract digits from mixed text while removing letters, punctuation, symbols, and other non-numeric characters.
This guide explains when to use Keep Only Numbers, how to get a cleaner result,
and which mistakes to avoid before moving on to related tools or the main tool page.
Why use Keep Only Numbers
Extracts numeric content quickly from mixed strings.
Useful for IDs, codes, phone-like values, and cleanup tasks.
Helps separate digits from noisy copied text.
Works well for fast browser-based preprocessing.
How to use Keep Only Numbers
Paste or type mixed text into the input box.
Run the tool to keep only numeric digits.
Review the extracted result.
Copy the output or continue with other cleanup tools if needed.
Best use cases
Extracting digits from IDs and reference strings.
Cleaning pasted phone or account-like values.
Preparing numeric-only text for import or matching.
Separating numbers from mixed labels or notes.
Common mistakes
Expecting spaces or separators to remain.
Fix: This tool keeps only digits, so separators are removed too.
Wanting letters removed but punctuation kept.
Fix: Use Remove Letters from Text if you want to keep symbols and punctuation.
Expecting spelled numbers like ten to remain.
Fix: This tool keeps numeric digits only, not number words.
Use the tool
Ready to run Keep Only Numbers? Open the main tool page to enter your input,
generate the result, and copy or download the output.