Network Tools
Free network tools for engineers — ping, port check, subnet calculator, bandwidth calculator and more.
Create a scannable WiFi QR code instantly. Friends can scan with their phone camera to join your home, office, or event network without typing long passwords.
Create custom QR codes for any URL, WiFi network, text, or contact card instantly. Personalize colors, add a logo or emoji, and download high-res PNGs free.
Calculate Voltage, Current, Resistance, and Power instantly. Decode 4-band and 5-band resistor color codes in real time with an animated visual graphic.
Instantly validate your Amazon Creators API credentials across any regional endpoint. Run real-time checks on product accessibility and ASIN status live.
Look up any MAC address to find the device manufacturer using the official IEEE OUI registry with 57,786 registered vendors.
Paste a Facebook Page URL or username to find its real numeric Page ID, and validate that your access token actually works.
Validate your Telegram bot token and chat ID against Telegram's real servers, and optionally send a live test message to confirm everything works end-to-end.
Calculate download speed, file transfer times, and data usage with interactive animated speedometer gauges. Input your network details to analyze and export results.
Calculate network address, broadcast address, usable host range, and total host count for IPv4 and IPv6. Get an instant binary breakdown of your CIDR prefix.