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IPv6 to MAC

Extract the MAC address from an IPv6 link-local address that was created using EUI-64 or modified EUI-64 format.

Sysops

REST API Playground

Complete REST API testing environment with endpoint builder and response visualization.

Developer World

Waist to Hip Ratio Calculator

Calculate waist-to-hip ratio (WHR) to assess body fat distribution and cardiovascular disease risk. Free health screening tool with risk interpretation.

Health

Standard Deviation Calculator

Calculate standard deviation and variance for population and sample data

Math

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