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Discover tools from different categories to expand your toolkit beyond Math.
Blacklist Checker
Check if an IP address is listed on any spam or security blacklists with our free online blacklist checker tool. Verify your email server's reputation.
Network
Butter Converter
Convert butter measurements between sticks, cups, tablespoons, grams, and ounces.
Conversion
Framingham Risk Score Calculator
Calculate 10-year cardiovascular disease risk using the Framingham Risk Score. Free online tool for cardiovascular risk assessment and prevention.
Health
Mortgage Refinance Calculator
Calculate refinance savings, break-even point, and compare current vs new mortgage
Financial