Developer tools
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Text ↔ Binary
Convert text to binary and back using real UTF-8 — emoji supported.
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JSON ↔ XML
Two-way JSON/XML conversion with proper escaping and formatting.
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Decimal → Octal
Convert base-10 numbers to base-8, instantly.
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Epoch → Date
Turn a Unix timestamp into a readable date, in UTC and your local time.
Color tools
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RGB ↔ HEX
Two-way RGB/HEX color conversion with live preview and copy.
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RGBA → HEX
Include the alpha channel when converting to a HEX color code.
Time zone tools
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UTC → EST
Convert UTC to US Eastern time, with daylight saving handled automatically.
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UTC → EDT
Convert UTC to Eastern Daylight Time (UTC−4).
Unit converters
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Knots → MPH
Speed conversion for aviation, marine and weather use.
Music & audio tools
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BPM → Milliseconds
Work out note lengths in ms for delay, reverb and sequencer timing.
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Tempo markings chart
Every Italian tempo term with its BPM range and meaning.
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BPM → ms reference
Note lengths and delay times for every common tempo, 60–200 BPM.
Browse a tempo marking: Grave, Largo, Larghetto, Adagio, Adagietto, Andante, Andantino, Moderato, Allegretto, Allegro, Vivace, Vivo / Vivacissimo, Presto, Prestissimo.
Browse by tempo (BPM): 60, 70, 75, 80, 90, 100, 110, 120, 124, 128, 130, 140, 150, 160, 174, 180, 200.
Last updated: September 1, 2026