Tools for Engineers
Free calculators and utilities for IT professionals
Got creds? Go here for more →ZFS RAID Calculator
Calculate capacity and IOPS for ZFS RAID configurations (RAIDZ1/Z2/Z3).
Multiple pools allow parallel I/O
Ceph Storage Calculator
Calculate Ceph cluster capacity and estimated IOPS.
Download Speed Calculator
Calculate download times for various file sizes and connection speeds.
1 Gbps = 1000 Mbps, 10 Gbps = 10000 Mbps
Cloud Pricing Calculator (Azure / AWS)
Quick cost estimates in GBP for popular VM configurations.
Pricing varies by region
Pricing varies by region
SQL Server Licensing Calculator
Estimate SQL Server licensing costs (per core licensing model).
Minimum 4 core licenses per processor
Oracle Database Licensing Calculator
Estimate Oracle DB licensing costs (Processor licensing).
RHEL Subscription Calculator
Estimate Red Hat Enterprise Linux subscription costs.
VMware Licensing Calculator
Estimate VMware vSphere licensing costs (per CPU licensing).
Essentials kits cover 3 hosts with 2 CPUs each
Windows Server Licensing Calculator
Estimate Windows Server licensing costs (per core licensing).
Minimum 16 cores per server, 8 per processor
Base64 Encoder / Decoder
Encode or decode Base64 strings.
ROT13 Encoder / Decoder
Apply ROT13 cipher (encoding and decoding are the same operation).
Unicode Lookup
Look up Unicode code points or convert characters.
IP Visualization
View your current public IP and basic information.
IP Geolocation
Look up geographical location of an IP address.
DNS Lookup
Query DNS records for a domain.
DNS Propagation Checker
Check DNS propagation across multiple global servers.
Tor Exit Node Check
Check if an IP address is a known Tor exit node.
Subnet Calculator
Calculate subnet details from IP address and CIDR notation.
WHOIS Lookup
Look up domain registration information.