TI-30X Scientific Calculator

TI-30X IIS Scientific Calculator Online

A faithful recreation of the TI-30X IIS scientific calculator, one of the most widely used calculators in education. This free online version replicates the two-line display, button layout, and complete feature set of the physical calculator.

Features

• Two-line display showing expression and result simultaneously
• Trigonometric functions: sin, cos, tan and their inverses (sin⁻¹, cos⁻¹, tan⁻¹)
• Logarithmic functions: log (base 10), ln (natural logarithm), 10^x, e^x
• Powers and roots: x², x³, square root, cube root, x^y, y-th root
• DEG/RAD angle mode toggle for trigonometry
• Factorial (n!), permutations (nPr), combinations (nCr)
• Constants: pi and e
• Memory functions: STO, RCL with multiple memory slots
• Last answer recall (ANS)
• Fraction arithmetic
• Negation (+/−) and parentheses

How to Use

1. Click number and operator buttons to build your math expression on the top line.
2. Press the yellow 2nd key to access secondary functions shown in green above each button.
3. Toggle DEG/RAD mode by pressing the mode button for trigonometric calculations.
4. Use parentheses for complex expressions and order of operations.
5. Press ENTER (=) to evaluate. The result appears on the bottom line.
6. Press ANS to recall the last result in a new calculation.
7. Use STO to save values and RCL to recall them from memory.