Free Calculators & IT Tools
Welcome to Zeus IT and Security’s toolbox—free, no-signup calculators that deliver instant network, storage and bandwidth estimates. Perfect for quick planning and validation.
IPv4 Subnet Calculator
Enter any IPv4 address and CIDR prefix (e.g. /24, /29) to instantly calculate network address, usable host range, subnet mask and broadcast address.
IPv6 Subnet Calculator
Enter any IPv6 address and prefix length (e.g. /64, /48) to instantly calculate network prefix, subnet mask and total address count.
Bandwidth & Transfer-Time Calculator
Enter a file size and link speed to instantly calculate transfer time (supports GB, GiB, Mbps & Gbps).
Data-Size Converter
Convert any data size to bytes, KB, MB, GB, TB or KiB, MiB, GiB, TiB in one click.
Password Strength Checker
Test the strength of any password and get instant feedback to help you improve your security.
Password Generator
Instantly create strong, randomized passwords based on your chosen length and character types—no guesswork needed.
IP Address & Info Viewer
Quickly check your public IP address, approximate location, ISP, and device details — all securely and instantly on our site.
Camera Storage Calculator
Quickly estimate the storage your security cameras need — plan NVR or hard drive space for keeping CCTV footage at home or business.
Pixels Per Foot Calculator
Estimate CCTV pixel density for identification, observation, or detection needs — plan camera clarity and field coverage with ease.
CCTV Days Calculator
Estimate how many days your cameras will record based on hard drive size, resolution, and daily usage — plan reliable CCTV storage with ease.
Ready for a Professional Design?
These calculators provide ballpark figures for planning. Actual project requirements may vary due to site conditions, local code compliance, and hardware specifications. To ensure a safe, reliable, and fully compliant installation, schedule a consultation with our Zeus IT team.