About
Six trig functions: sin, cos, tan, arcsin, arccos, arctan with degree/radian toggle. All calculations run locally.
FAQ
Is this tool free?
Completely free. Part of Free ToolBase, no signup or payment required.
Is my data uploaded to a server?
No. All processing runs entirely in your browser. Your data never leaves your device.
Which browsers are supported?
All modern browsers: Chrome, Firefox, Safari, Edge. Latest versions recommended.
Can I use it on mobile?
Yes. Fully responsive design works on phones and tablets.