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Calculate return on investment with annualized ROI and profit margins

Calculate what time it was a specific number of minutes ago. Great for tracking when events occurred based on elapsed minutes.

Convert numbers between different bases: decimal, binary, hexadecimal, octal and more. Easy-to-use number system converter.

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