Tools for Engineers

Free calculators and utilities for IT professionals

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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

Note: Pricing is approximate (GBP). Check official pricing pages for accurate quotes.

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.

Results will appear here...

ROT13 Encoder / Decoder

Apply ROT13 cipher (encoding and decoding are the same operation).

Results will appear here...

Unicode Lookup

Look up Unicode code points or convert characters.

Results will appear here...

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.