MEASURE.
CONVERT.
DIAGNOSE.
Fast browser-based tools for internet speed, latency, bandwidth, transfer time and media bitrate.
TOOLS / 42
Purpose-built utilities. No account, no dashboard, no unnecessary steps.
Speed Test
Throughput, idle latency & load impact
Internet Quality
Connection score + use-case ratings
Ping Test
Cloudflare edge HTTP latency and jitter
Jitter Test
Cloudflare edge latency consistency
Bandwidth Calculator
Transfer time from size & speed
Download Time
Practical download estimate
Bitrate Converter
Bits, bytes, Kbps, Mbps & Gbps
Mbps → bps
Instant decimal conversion
Mbps → MB/s
Network rate to file rate
Audio Bitrate
Estimate local audio bitrate
Video Bitrate
Estimate local video bitrate
Connection Compare
Compare two connection profiles side by side
Diagnostic Session
One guided edge session for speed, latency, jitter & load
Bufferbloat Test
Idle vs loaded latency on the Cloudflare edge path
Local Test History
30 browser-local runs, trends, labels & comparisons
Before / After Test
Measure two controlled connection states and compare
Wi-Fi vs Ethernet
Guided two-run comparison with user-confirmed transport
Connection Info
Public request IP + browser network capabilities
DNS Lookup
Inspect public DNS records for a hostname
Reverse DNS Lookup
Resolve a validated IPv4 or IPv6 address to PTR
Upload Time
Practical upload estimate
File Transfer
Compare transfer time across connection speeds
IPv4 Subnet Calculator
Network, mask, host range & CIDR math
IPv6 CIDR Calculator
Normalize IPv6 prefixes and inspect address range
IPv6 Prefix Compare
Compare IPv6 prefix containment and shared address space
IPv6 Prefix Normalizer
Canonicalize, deduplicate and exactly aggregate IPv6 prefix lists
IPv6 Prefix Split
Split one IPv6 prefix into equal child networks with exact 128-bit math
IPv6 Range → CIDR
Cover an IPv6 start/end range with the smallest exact CIDR set
IPv6 Supernet Planner
Aggregate IPv6 prefixes exactly and inspect the smallest containing prefix
IPv4 Range → CIDR
Cover an IPv4 start/end range with minimal CIDR blocks
IPv4 CIDR Split
Split one IPv4 network into equal child subnets
IPv4 Supernet Planner
Aggregate multiple IPv4 CIDRs and inspect the containing supernet
IPv4 CIDR Compare
Check containment, equality and separation between two IPv4 networks
IPv4 CIDR Normalizer
Canonicalize, deduplicate and exactly aggregate IPv4 CIDR lists
Network Workspace
Keep bounded network-planning notes in this browser only
Streaming Bitrate
Estimate bitrate, data use and upload headroom
Data Usage
Estimate hourly, daily and monthly data use
Video Bitrate Calculator
Plan video bitrate from file size and duration
Audio Bitrate Calculator
Estimate audio file size from duration and bitrate
ISP Plan Reality
Compare entered plan rates with measured local results
Download Reality
Convert Mbps to MB/s and compare plan vs measured time
Connection Troubleshooter
Symptom-led guidance from local measured evidence
RAW NUMBERS.
USEFUL OUTPUT.
Measure network performance with clear status and error feedback.
Turn bandwidth, file size and network ranges into practical answers.
Inspect supported media locally. Your file stays in your browser.