Convert Unix timestamps to human-readable dates and back. Shows UTC, ISO 8601, locale, date, and time formats. Milliseconds, seconds, and ISO 8601 convert both directions with timezone clarity — local math, free, no signup.
Shift a wall-clock time from one IANA timezone to another — DST handled via real zone offsets, with day-shift flags when the date rolls over. Free, local, no signup.
Countdown to a specific date and time with live days, hours, minutes, and seconds display. Perfect for event countdowns and deadlines. Input never leaves your device — everything runs locally in your browser.
Generate random dates from the past five years with ISO and long-form outputs. Input never leaves your device — everything runs locally in your browser.
Convert between plain text and binary in both directions — encode text into its base-2 representation or decode binary strings back to readable text, byte by byte. Files are converted locally in your browser — nothing is uploaded.
Decode binary strings back to readable Unicode text with strict validation. Recover messages from bit dumps — local decoding, free, no signup.
Percent-encoding (URL encoding) replaces unsafe URL characters with % followed by two hex digits. Spaces become %20, special characters become %XX. This ensures URLs are transmitted correctly over HTTP.
Encode when building URLs programmatically — query strings, form data, redirect URLs. Decode when reading encoded URLs you received from APIs or webhooks.
Yes. Non-ASCII characters like emojis, accented letters, and CJK characters are properly encoded as UTF-8 byte sequences (e.g., é becomes %C3%A9).
Yes. Paste a full URL or just the query parameters. The tool can encode/decode the entire string or just specific parts.
Yes. All encoding and decoding happens in your browser. No data is sent to any server.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results. Input never leaves your device — everything runs locally in your browser.
Time Zone Converter
Shift a wall-clock time from one IANA timezone to another — DST handled via real zone offsets, with day-shift flags when the date rolls over. Free, local, no signup.
Last updated October 2026