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Discover tools from different categories to expand your toolkit beyond Math.

Build and test HTTP requests with custom headers and body content. Supports all HTTP methods.

Test server response time and availability with our online ping tool. No software installation required.

Calculate capital gains tax for 2026 with short-term vs long-term rates, NIIT, and state taxes

Create mailto links with pre-filled subject, body and recipients. Generate email links for your website.