Scientific Calculator
This free online scientific calculator is a browser-based math solver for everyday arithmetic plus trig, logs, powers, roots, and factorials — no download, TI-84, or Desmos account required.
How to use this online calculator
Tap number and operator buttons to build an expression, then press = to evaluate — unclosed parentheses are closed automatically. Function buttons like sin, ln, and log open parentheses for you to fill in; buttons like x², 1/x, n!, and √x apply to the number you just typed. Use the Deg/Rad toggle for trigonometry.
9 then pressing √x gives 3. Typing 2 then xʳ then 10 then = gives 1024 (2^10). For a quadratic formula, compute each piece (discriminant, then roots) with powers and square roots.
Online math solver vs graphing calculators
This tool covers scientific functions similar to a TI-84 calculator or Desmos scientific calculator for expression evaluation. It is not a full graphing calculator — for percentages or fractions, use the Percentage Calculator or Fraction Calculator.
Safe, local evaluation
Expressions are evaluated with a custom parser that runs entirely in your browser — nothing is sent to a server.
Frequently Asked Questions
Is this a free online calculator app?
Yes — it runs in your browser with no install. Use it as a calculator online / math solver for school, work, or everyday arithmetic.
Can it replace a TI-84 or Desmos?
It covers many scientific calculator functions (trig, logs, powers, roots). It does not graph like a TI-84 Plus CE or Desmos graphing calculator.
Can I solve a quadratic formula here?
Yes — enter the discriminant and root expressions step by step using powers, subtraction, and square roots.