Martech Zone Converters

A collection of small web-based converters provided free to marketers to help them with their day-to-day work.

  • Unix Timestamp Converter: Convert Unix timestamps to human-readable dates and times — or reverse the process — in any IANA timezone, with AM/PM support.

    The Pulse of the Internet: Understanding the Unix Timestamp

    If you’ve ever looked behind the curtain at the date of a website’s database or peeked at a server log, you’ve likely seen a mysterious, long string of digits like 1710000000. To a human, it looks like a random serial…

  • HTML to Markdown Converter: HTML adds a lot of extraneous text that can drive up tokens and compute costs with LLMs. Convert your HTML to Markdown to keep context without the tags.

    HTML to Markdown Converter: Why Minimalist Syntax Provides Better Contextual Clarity

    The modern internet has a weight problem. If you’ve ever tried to copy a simple article from a webpage and paste it into a document, you’ve seen the invisible baggage it carries. Underneath that clean-looking paragraph lies a chaotic infrastructure…

  • Hex ↔ RGB: Easily convert HEX codes to RGB values and vice versa for your design projects.

    HEX, HSL, HSV, RGB Color Converter (Alpha Support)

    Working with color across different platforms means constantly translating between formats. A designer hands you an HSL value, your CSS needs HEX, your JavaScript animation library expects RGB, and your image editor thinks in HSV. Rather than juggling browser tabs…

  • CSV ↔ JSON: Transform CSV data into JSON and back again to streamline your data processing.

    Convert CSV to JSON or JSON to CSV

    Working with data isn’t always as seamless as we’d like. Some platforms still rely on comma-separated values (CSV) files, which are human-readable and straightforward but not always flexible. Others are increasingly adopting JavaScript Object Notation (JSON), a lighter, structured format…

  • hh:mm:ss to Seconds: Convert time (hh:mm:ss) to seconds or vice versa. Create YouTube timestamps URLs.

    Convert Time (hh:mm:ss) to Seconds or Vice Versa

    We recently produced a video for our investors in Q&A format. Interestingly, my video editing software provided the format in hh:mm:ss format, but when I went to build the direct YouTube URLs to advance them to the section in the…

  • CSV ↔ Row: Transform CSV data into rows and back again to streamline your data processing.

    Convert Rows To CSV or CSV to Rows

    It never fails that every time I'm working to move data from one system to another using a text area field, my data is formatted incorrectly. Some systems want all of the values in a comma-separated value (CSV) like this:…