Scientific Calculator — Free Online Trig, Log & Power Calcul

A full scientific calculator with sin/cos/tan, log/ln, √, powers, π and e, RAD/DEG toggle, memory keys (MS/MR/MC), and calculation history — fully client-side. This free online scientific calculator runs entirely in your browser — no data is ever uploaded to a server. (It is fully client-side: nothing you type is sent anywhere.)