Internet Speed Test

Test your internet connection speed free online. Measures download speed and latency directly in your browser using real network requests, no app needed.

Download (Mbps)

Latency (ms)

Measured via real network requests from your browser.

How to Use This Tool

Click Start TestThe test downloads a real file to measure throughput

Wait for completionTakes a few seconds depending on your connection

Read your resultsSee download speed and latency in standard units

Internet Speed Test is a free online tool that works entirely in your browser — no signup, no data uploaded, no limits.

Real Network Measurement, Browser-Based

This test downloads an actual file from a public content delivery network and times the transfer precisely, calculating real throughput from genuine network activity -- not a simulated or estimated number. It also measures round-trip latency by timing a small request-response cycle, giving a practical picture of your current connection performance.

Why Results Vary Between Different Testing Tools

Dedicated speed test services maintain their own distributed server infrastructure specifically optimized for throughput measurement, often using multiple parallel connections to saturate available bandwidth more aggressively than a single browser-based file download. This tool's browser-native approach gives a genuine, real measurement, though it may read somewhat differently from a specialized testing service under the same network conditions.

Latency Matters Independently of Raw Speed

A connection can have high download speed but still feel sluggish for real-time activities if latency is high -- video calls stutter, online games feel delayed, even though large file downloads complete quickly. Both numbers together give a more complete picture than download speed alone.

Frequently Asked Questions

It downloads a file of known size from a public CDN and measures how long the transfer takes, calculating throughput from that real timing data. This gives a genuine approximation of your download speed under current network conditions, though dedicated speed test services with purpose-built server infrastructure can provide more consistently calibrated results.

Specialized speed test services use geographically distributed servers selected for proximity and run multiple parallel connections optimized specifically for throughput testing. A browser-based test using a general CDN resource gives a reasonable real-world approximation but isn't purpose-built to the same degree.

The round-trip time for a small request to reach a server and return, measured in milliseconds. Lower latency matters significantly for real-time activities like video calls and online gaming, even when download speed is otherwise high.

Network conditions genuinely fluctuate -- other devices on your network competing for bandwidth, your ISP's network congestion at different times of day, and even the specific server's current load all introduce real variability between test runs.

It measures whatever path your traffic takes from your device, through your router (WiFi or wired), out to your ISP, to the test resource. A slow WiFi connection within your home can bottleneck results even if your actual internet plan supports much higher speeds.