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What Is My Latency

Measure HTTPS round-trip time from your browser to this site—a practical “ping” when ICMP is not available in the web sandbox.

“Ping” usually means ICMP Echo — the small packets routers and desktops use to probe reachability. Websites run in a sandbox: your browser cannot send raw ICMP pings to arbitrary hosts from JavaScript. This tool does the closest honest alternative: it times a tiny HTTPS request to this same origin (/api/latency) so you see round-trip time (RTT) to WhatIsMyTools — repeatable, comparable, and useful when testing VPN or Wi‑Fi changes. It does not report latency to arbitrary IPs or game servers unless they share the exact same network path, which they usually do not.

Not ICMP ping — HTTPS round-trip from your browser to this site only.
📶What Is My Latency

RTT versus ICMP ping

ICMP ping measures echo request/reply timing at Layer 3, often implemented in OS utilities (ping). HTTPS RTTwraps TLS and HTTP on top of TCP — heavier than a lone ICMP packet, closer to how real web pages behave. Numbers here skew a bit higher than raw ICMP but still track “how snappy is my path toward this edge?”

Why samples jump around

Wi‑Fi airtime contention, roaming, CPU throttling on phones, QUIC vs HTTP/2, TLS 1.3 resumption, and CDN routing can shift a few milliseconds between runs. Trend matters more than a single millisecond-perfect reading.

Bandwidth measures how wide the pipe feels; latency measures responsiveness. Pair this page with our Internet Speed Test when you're diagnosing “slow browsing”: high Mbps plus bad bufferbloat can still feel sluggish.

Privacy note

Runs are initiated in your browser; see our Privacy Policy for how analytics or ads behave separately from this diagnostic.

Common questions

What does this tool measure?
It measures HTTPS round-trip time (RTT) from your browser to this website’s `/api/latency` endpoint: the elapsed time around a small same-origin HTTPS request — similar in spirit to a ping sample, but not ICMP.
Is this the same as ping (ICMP)?
No. Ordinary web pages cannot send ICMP Echo requests from JavaScript for security reasons. This tool uses a timed fetch to our own origin instead, which is what browser-based diagnostics can reliably do.
Will this match latency to a game or streaming server?
Not necessarily. Routing, peering, and distance differ per destination IP. Numbers here describe RTT toward WhatIsMyTools — useful before/after VPN or Wi‑Fi changes, but not a substitute for a game-client ping to a regional shard.
Why do results change between clicks?
Wi‑Fi contention, CPU load, background tabs, adaptive bitrate, TLS session resumption, and CDN edge selection can all vary RTT slightly. Running several samples and averaging is more stable than one shot.
Does a VPN affect the reading?
Yes. Traffic may hairpin through the VPN provider’s exit. RTT reflects the path including that tunnel versus your ISP direct path.
What is jitter?
Jitter here is max minus min across the sampled runs — a coarse spread measure, not ICMP inter-arrival jitter. Use it to see how stable your RTT samples are.
Is this related to your Internet Speed Test?
Both use network activity on this domain. The dedicated speed test also measures throughput; this page focuses on small-request RTT only.
Do you store my latency results?
No. Sampling happens in your browser session. See our Privacy Policy regarding analytics or ads separately from this diagnostic output.

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