diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e8046b81b2..a038703584 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1 +1,20 @@
- All contributions, bug reports, bug fixes, documentation improvements, enhancements, and ideas are welcome.
+Contribution guidelines
+Welcome Contributors!
+Thank you for considering contributing to the centralized repository. This document outlines the guidelines for contributing to the development of Shipping Rates and Calculations.
+
+Code style
+Please follow the coding style and conventions used in the existing codebase. This helps maintain consistency across the project.
+
+Documentation
+Ensure that your contributions are well-documented. Include comments in your code where necessary and provide a clear and concise description of your changes in the pull request.
+
+Testing
+Before submitting a pull request, make sure your changes have been tested thoroughly. Include relevant test cases and ensure that existing tests pass.
+
+Issue tracker
+Check the issue tracker for any open issues or feature requests. If you're working on something, please comment on the issue to let others know.
+
+Code review
+All contributions will go through a code review process. Be open to feedback and be willing to make changes if necessary. Code reviews help maintain code quality and consistency.
+
+Thank you for your contribution!
diff --git a/Shipping_Cost_Calculator.py b/Shipping_Cost_Calculator.py
new file mode 100644
index 0000000000..07a360c79a
--- /dev/null
+++ b/Shipping_Cost_Calculator.py
@@ -0,0 +1,11 @@
+# Shipping Cost Calculator
+
+## Input package weight and shipping rate
+weight = float(input("Enter the package weight in kilograms: "))
+rate = float(input("Enter the shipping rate per kilogram: "))
+
+## Calculate shipping cost
+shipping_cost = weight * rate
+
+## Display the result
+print(f"Shipping Cost: {shipping_cost} USD")