Other tools we maintain that, like epochtime.tools, run entirely in your browser with no signup, no tracking of your inputs, and no paywall. Use what's helpful and ignore the rest.
Format conversion utilities — encode and decode text, URLs, and other data formats.
Encode any text or file to Base64 format. Useful for embedding binary data in JSON, storing data in URLs, or sending attachments inline. Supports UTF-8, binary files, and URL-safe variants.
Visit base64encode.tools →Decode Base64-encoded text back to its original form. Auto-detects URL-safe variants and handles padding correctly. Use it to inspect JWT payloads, decode data URLs, or recover embedded files.
Visit base64decode.tools →Encode or decode URL-percent-encoded strings (the %20-style escapes). Handles full URLs and individual query parameters. Useful for API testing, debugging redirect chains, and crafting URLs by hand.
Generate cryptographic hashes and unique identifiers — useful for verification, deduplication, and ID generation.
Compute MD5, SHA-1, SHA-256, SHA-384, SHA-512, and other hashes for any text or file. All processing happens in your browser — your input never leaves the page. Useful for file integrity checks and quick hash comparisons.
Visit hashgenerator.tools →Generate UUIDs (universally unique identifiers) in v1, v4, and v7 formats. Bulk generation, validation, and conversion between formats. Useful for database primary keys, API request IDs, and distributed system identifiers.
Visit www.uuidcore.com →Work with structured data formats — validate, format, and analyze.
Tools for checking and improving password security.
Tools for working with written content.
Practical calculators for common everyday math problems.
Calculate the square footage of rectangular, triangular, or irregular spaces. Convert between square feet, square meters, and other units. Useful for flooring estimates, paint calculations, and real estate.
Visit thesquarefootagecalculator.com →Compute percentages, percentage changes, percentage of a total, and percentage differences. Useful for sales tax, discount math, statistics, and quick financial calculations.
Visit bestpercentagecalculator.net →Calculate exact age from a birthdate — years, months, days, hours, even seconds. Useful for age verification, retirement planning, milestone tracking, and historical research.
Visit theagecalculator.net →All sites listed here share the same philosophy: do one thing well, run in the browser, charge nothing, and don't waste your time. If you find them useful, bookmarking is the best way to support them — and feel free to tell other developers, students, or anyone else who'd benefit.
If a tool you'd like to see isn't on the list, email contactus@epochtime.tools with a suggestion.