Nucleic Acid Converter Using HTML, CSS and JavaScript with Source Code


Welcome to the Nucleic Acid Converter, a versatile tool designed to simplify the translation of DNA or mRNA sequences into their corresponding complementary strands and protein sequences. Developed using HTML, CSS, and JavaScript, this web application offers an intuitive interface for students, researchers, and enthusiasts in the fields of molecular biology, genetics, and biochemistry. Whether you're exploring genetic codes, studying protein synthesis, or conducting research in biotechnology, the Nucleic Acid Converter provides an interactive platform to deepen your understanding of nucleic acids and their functional implications.

With features such as a virtual keyboard for seamless input, automatic mRNA translation, and a predefined codon table for protein synthesis, this tool empowers users to effortlessly convert nucleotide sequences into informative outputs. Dive into the fascinating world of genetics, unravel the mysteries of genetic information, and uncover the secrets of protein structures with the Nucleic Acid Converter. Harness the power of technology to decode the language of life and enhance your knowledge in the intricate realm of molecular biology.

You may also check this simple HTML, CSS and JavaScript projects:


  1. Input Field: Users can enter DNA or RNA sequences directly into the input field.
  2. Virtual Keyboard: A virtual keyboard with buttons for A, T, C, and G letters allows users to input nucleotide bases easily.
  3. Conversion: The application converts the input sequence into its complementary DNA or RNA strand and displays it in the output section.
  4. mRNA Translation: The mRNA strand is automatically generated by replacing Thymine (T) with Uracil (U).
  5. Protein Translation: Using a predefined codon table, the application translates the input sequence into a protein sequence by grouping nucleotides into codons and matching them with their corresponding amino acids.
  6. Interactive UI: The interface includes buttons for navigation and actions such as converting the sequence and restarting the process.

Technologies Used:

  1. HTML: Used for structuring the web page and creating input/output elements.
  2. CSS: Styled the user interface for an appealing and responsive design.
  3. JavaScript: Implemented the logic for input validation, conversion algorithms, and user interaction.

How to Use:

  1. Input Sequence: Enter your DNA or RNA sequence directly into the input field or use the virtual keyboard buttons for A, T, C, and G bases.
  2. Conversion: Click on the "Convert" button to generate the complementary DNA/RNA strands and the corresponding protein sequence.
  3. Output: The converted DNA, mRNA, and protein sequences will be displayed in the output section.
  4. Restart: To convert another sequence, click on the "Convert Again" button to reload the page and start a new session.

Sample Screenshots of the Project:

Landing Page

Sample Conversion

How to Run?

  • Download the provided source code zip file.
  • Extract the downloaded zip file.
  • Open the html file and you are now ready to go!

Video Demonstration for Installation/Setup:


In conclusion, the Nucleic Acid Converter serves as a valuable resource for anyone delving into the complexities of genetic information and protein synthesis. By combining user-friendly features with essential conversion algorithms, this web application bridges the gap between theory and practice, making it accessible for educational purposes, research endeavors, and scientific exploration. Whether you're a student gaining foundational knowledge or a seasoned researcher investigating advanced concepts, the Nucleic Acid Converter offers a versatile and engaging platform to unlock the mysteries of nucleic acids and unveil the intricate mechanisms of life at the molecular level. Embrace the possibilities, expand your understanding, and embark on a journey of discovery with this powerful tool in the realm of molecular biology.

That's it! I hope this "Nucleic Acid Converter Using HTML, CSS and JavaScript" will assist you on your programming journey, providing value to your current and upcoming projects.

For additional tutorials and free source codes, explore our website.

Enjoy Coding :>>

Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.

Virus note: All files are scanned once-a-day by for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.


1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.

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