How to Use a Scientific Calculator Online
Published September 21, 2026 · 2 min read
For anything beyond basic arithmetic — trig functions, logarithms, exponents, roots — this scientific calculator covers the full common function set without needing a physical calculator or a downloaded app.
Try Scientific CalculatorSteps
- 1
Open the Scientific Calculator tool
Go to the scientific calculator.
- 2
Enter your expression
Use the function buttons for sin, cos, tan, log, powers, roots and more.
- 3
Use built-in constants
π and e are available directly, so you don't need to type out their digits.
- 4
Read the result
See your calculation's result instantly.
Frequently asked questions
Trigonometric functions support both modes — check the mode setting to make sure it matches what your calculation expects.
Trigonometry (sin, cos, tan and their inverses), logarithms (natural and base-10), exponents, roots, and the constants π and e, alongside standard arithmetic.
It covers the standard scientific calculator function set for everyday math, engineering, and science use — check your specific exam's tool policy, since some exams restrict calculator use entirely.
Because every function is available in one place without switching apps, this is a convenient option whenever you need more than basic arithmetic.