Format & Validate Tools
Format phone numbers, IBAN, VAT IDs, credit cards, SSNs, names, money amounts, scientific notation, and dates — all in your browser with no data upload.
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Phone Number Formatter
Format phone numbers into E.164, international, and national styles. Supports 15 country codes — US, UK, DE, JP, CN and more. Free, client-side tool.
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Address Formatter
Format postal addresses into multi-line and single-line layouts from individual fields. Works for any country convention. 100% client-side, nothing uploaded.
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VAT Number Validator
Validate EU VAT numbers against official format patterns for 27 member states — identifies the issuing country and normalises the format. Free, client-side.
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IBAN Validator
Validate IBAN bank account numbers using ISO 7064 MOD-97-10 checksum verification and country-specific length rules. Free, instant, client-side.
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Credit Card Formatter
Format credit card numbers with standard spacing, auto-detect card network (Visa, Mastercard, Amex), and validate the Luhn checksum. Free, client-side.
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SSN Masker
Mask US Social Security Numbers showing only the last 4 digits. Outputs standard dashes, X-replaced, and last-4-only formats — safe for display and logging.
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Name Formatter
Format personal names into full name, last-first order, initials, and formal salutation from individual components — title, first, middle, last, suffix.
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Money Formatter
Format monetary amounts with currency symbols, thousand separators, and accounting notation. Supports 15 major currencies including USD, EUR, GBP, JPY.
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Scientific Notation Formatter
Convert numbers to scientific notation, E notation, and engineering notation with configurable significant figures. Works with very large and very small values.
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Date ISO Formatter
Parse any date string and convert it to ISO 8601, UTC, Unix timestamp, and human-readable formats. Supports dozens of input formats. Free and client-side.
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XML to YAML Converter Online
Convert XML to YAML online in your browser — attributes become @attr keys, arrays auto-detected. 100% client-side, no upload, no signup required.
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Excel to Markdown Table for Notion
Convert Excel or CSV to Markdown table for Notion, Obsidian, or GitHub. Handles merged cells, auto-aligns numeric columns. 100% client-side — no upload, no signup.
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YAML to Properties Spring Boot
Convert Spring Boot application.yml to application.properties online — nested keys become dot-separated, arrays use [n] indexing, multi-doc YAML supported. 100% client-side, no upload.
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About these formatting tools
These tools help you standardise, validate, and display structured data correctly — from international phone numbers to IBAN bank accounts and ISO dates. Everything runs locally in your browser so sensitive information like SSNs and card numbers never leaves your device.