🧮 Variable URL Calculator ?x=5&expr=2*x+1

Share links with custom variables: ?a=10&b=20&expr=a*b+sqrt(a) — dynamic math

🔗 live URL (variables + expr) /

📌 Variables (a–z, any name)

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➜ values merged from URL & edits
📟 Result
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✨ Variables via URL: ?x=5&y=3&expr=2*x+y^2 – each variable becomes a number.
⚡ Supports: + - * / % ^, functions: factorial(n), round(n,dec), percent(part,total), sqrt, sin, cos, log, ln, pi, e.
2*x+1 (x=7) hypotenuse 3,4 percent(34,200) factorial(4.2→4) 2*5+1*10