Bandwidth & Data Transfer
Bandwidth Calculator
Calculate required bandwidth from data volume and transfer time.
Download Time Calculator
Estimate download time from file size and connection speed.
Upload Time Calculator
Estimate upload time from file size and connection speed.
Transfer Speed Calculator
Calculate transfer speed from data volume and elapsed time.
Data Transfer Calculator
Calculate total data transferred from bandwidth and duration.
Bandwidth-Per-User Calculator
Estimate bandwidth requirements for concurrent users.
Streaming Bandwidth Calculator
Estimate bandwidth for simultaneous streaming sessions.
Network Throughput Calculator
Calculate effective network throughput after efficiency losses.
IP & Subnetting
IP Address Calculator
Analyze an IPv4 address with CIDR notation.
IPv4 Subnet Calculator
Calculate IPv4 network, broadcast, host range and capacity.
IPv6 Subnet Calculator
Calculate IPv6 prefix capacity and address count.
CIDR Calculator
Calculate CIDR network details and host capacity.
Subnet Mask Calculator
Convert an IPv4 CIDR prefix into a subnet mask.
IP Range Calculator
Calculate the inclusive range and address count between IPv4 addresses.
Usable IP Address Calculator
Calculate usable IPv4 host addresses for a subnet.
Network Address Calculator
Find the network address for an IPv4 CIDR subnet.
Broadcast Address Calculator
Find the broadcast address for an IPv4 CIDR subnet.
Hosts Per Subnet Calculator
Calculate total and usable host capacity per subnet.
Domains & DNS
Domain Age Calculator
Calculate domain age from its registration date.
Domain Expiry Calculator
Calculate time remaining until a domain expiry date.
Domain Name Generator
Generate simple domain-name ideas from keywords.
DNS Record Lookup
Look up DNS records using DNS-over-HTTPS.
MX Record Lookup
Look up mail-exchange records using DNS-over-HTTPS.
Nameserver Lookup
Look up authoritative NS records using DNS-over-HTTPS.
Domain-to-IP Lookup
Resolve a domain to an A record using DNS-over-HTTPS.
URL & Web Utilities
URL Analyzer
Break a URL into protocol, host, port, path, query and hash.
Query String Parser
Parse URL query parameters into readable key-value pairs.
Query String Generator
Build a URL query string from key-value pairs.
URL Slug Generator
Create clean URL-friendly slugs from text.
HTTP Status Checker
Look up common HTTP status codes and reason phrases.
MIME Type Lookup
Look up common MIME types by file extension.
HTTP Header Checker
Inspect HTTP headers when browser access is permitted.
URL Redirect Checker
Check a URL's browser-observed redirect/final response.
Website Response Time Checker
Measure browser-observed response time.
Website Uptime Calculator
Calculate downtime allowed for an uptime target.
Network Utilities
Ping Calculator
Estimate propagation-distance equivalent from ping latency.
Latency Calculator
Convert round-trip latency into approximate one-way latency.
Packet Loss Calculator
Calculate packet loss percentage and received packets.
Port Number Lookup
Look up common TCP/UDP ports and typical services.
Website Size Calculator
Estimate website transfer volume from page size and views.