Free Online Port Checker Tool

Instantly check if a port is open or closed on your computer, server, or domain. Perfect for network troubleshooting, gaming, and server security.

Check if a port is open or closed on your network.

Find detailed information about any IP address.

Check the speed and response time of your connection.

Check and troubleshoot DNS records for any domain.

Instantly view your public IP address.

Write and save quick notes online.

Keyboard Tester

Test your keyboard keys online.

Calculate your Body Mass Index instantly.

Speed Calculator

Calculate speed from distance and time.

Kmpl Calculator

Find vehicle mileage in KM per liter.

Grade Calculator

Calculate your final grade based on marks.

Calculate your GPA easily with credits and grades.

Scientific Calculator

Advanced calculator with scientific functions.

Final Grade Calculator

Estimate your final grade based on coursework.

Binary Converter

Convert binary, decimal, and hex easily.

Convert between measurement units instantly.

Image Converter

Convert images between formats like PNG, JPG, and more.

QR Code Generator

Generate QR codes for links and text instantly.

Decimal to Binary

Convert decimal numbers into binary code easily and quickly.

Binary to Decimal

Convert binary numbers back to decimal format with ease.

Convert hexadecimal numbers into binary representations.

Convert binary numbers into hexadecimal format fast.

Easily convert decimal numbers to hexadecimal codes.

Convert hexadecimal numbers back into decimal form.

Binary Addition

Add two binary numbers quickly and easily.

Binary Subtraction

Subtract one binary number from another with step-by-step guidance.

Binary Multiplication

Multiply binary numbers with a simple online calculator.

Binary Division

Divide binary numbers and see the results with explanation.

Base64 Encode/Decode

Convert text, images, audio, or video to and from Base64.

Frequently Asked Questions

The Port Checker helps you test if specific ports on your IP, server, or domain are open or closed to troubleshoot connectivity or security.

Our Unit Converter uses standard conversion formulas to provide accurate and reliable results across multiple measurement categories.

Yes! All tools on our website are completely free to use with no sign-up or download required.

Yes, you can export your port check results as a CSV file for your records.