Are these network tools free?

Yes. Every diagnostic tool and calculator on SwiftNetScan runs free in your browser, with no registration required.

Do the tools install anything?

No. They run entirely as web pages using standard browser APIs. Nothing is downloaded to your device.

Which tool should I start with?

Start with the internet speed test for a baseline, then use the ping test and packet loss test if the connection feels unstable.

Can I use these tools on mobile?

Yes. Every tool is responsive and works on phones and tablets, including the mobile speed test.

How accurate are browser-based tests?

Browser tests measure real HTTP throughput, which is what applications actually get. Use a wired connection and close other apps for the cleanest result.

Home / Tools

Free network tools

Measure, diagnose and plan your connection. Every tool runs in your browser, needs no account, and links to the learning material that explains the numbers it produces.

Speed & Latency

Internet Speed TestDownload, upload and ping in under 30s.
WiFi Speed TestMeasure wireless throughput per room.
Mobile Speed Test4G and 5G performance on your phone.
Broadband Speed TestCheck your plan against what you pay for.
Ping TestRound-trip latency to nearby servers.

Diagnostics

Packet Loss TestDetect dropped requests over time.
Network Gear ScannerPhoto-label router ports and get a connection checklist.
Global Latency MapPing major regions from your browser.
DNS LookupResolve A, AAAA, MX and TXT records.
Port CheckerSee which common ports are reachable.
IP LookupYour public IP, ISP and location.
Website Status CheckerIs a site up, and how fast does it answer?

Calculators

Bandwidth CalculatorHow much speed does your household need?
Download Time CalculatorTransfer time for any file size and speed.
Subnet CalculatorNetwork, broadcast and usable host range.
CIDR CalculatorPrefix sizes, masks and address counts.

Security

URL Safety CheckerInspect a link before you open it.
Password GeneratorStrong, random credentials offline.

Frequently Asked Questions

Get answers to common questions about internet speed testing.

Go deeper with the networking course library

Interactive lessons on TCP/IP, DNS, WiFi, routing and security — each with a quiz and a certification badge. Start free, upgrade to Pro for the expert track.

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