What functions are supported?

Trigonometric functions, logarithms, square root, absolute value, exponent, and factorial, among others — the quick-insert buttons cover the most common ones.

Are angles in degrees or radians?

Radians — the standard convention for mathematical trig functions. Convert degrees to radians (× π/180) before using them if needed.

What happens if I type an invalid expression?

The result panel shows 'Invalid expression' rather than crashing — fix a typo or unmatched parenthesis and it recalculates automatically.

Can I use variables, not just numbers?

No — this evaluates a single numeric expression, not algebra with named variables. For matrix algebra, see the Matrix Calculator instead.

How do I enter a negative exponent, like 2 to the power of -3?

Write it with parentheses around the negative sign, like 2^(-3), so the expression parser doesn't misread the minus as subtraction.

What's the difference between log(x) and ln(x)?

log(x) here is base-10 logarithm; ln is natural logarithm (base e). Use log(x, base) to specify any other base directly.

Can I compute factorials of large numbers?

Yes, using ! after a number (e.g. 10!), though very large factorials can exceed standard floating-point precision and show a rounded or approximate result.

Why does my expression with implicit multiplication, like 2pi, cause an error?

The parser expects an explicit operator between a number and a constant — write 2*pi rather than 2pi so it's read as multiplication.

Scientific Calculator

About the Scientific Calculator

Evaluates full mathematical expressions with proper order of operations, trig functions, logarithms, exponents, and constants — built for typing a whole expression rather than button-by-button entry.

100% Free Runs in Your Browser No Sign-Up Required

How to use it

Type a full expression into the Expression field, or build one with the quick-insert buttons.
Read the evaluated result in the readout below.

Formula

Standard operator precedence applies: parentheses, then exponents, then multiplication/division, then addition/subtraction. Functions like sin(), cos(), log(), and sqrt() take arguments in parentheses.

Worked example

sqrt(2)^3 + log(100, 10) evaluates to about 2.828 + 2 = 4.828.

Supported functions by category

Supported functions by category
Category	Functions	Example
Trigonometric	sin(, cos(, tan(	sin(pi/4)
Logarithmic	log(, ln(	log(100,10) = 2 — one argument is base-10, log(x,base) for any other base
Powers/roots	sqrt(, ^	sqrt(2)^3
Constants	pi, e	2*pi
Other	! (factorial), abs(, exp(, mod	5! = 120

Recommendations

• Use pi and e directly in expressions — they're recognized as constants, not variables.
• log(x) with one argument is base-10; use log(x, base) for a different base.
• For quick one-off arithmetic without functions, the Basic Calculator's button interface is often faster.

Frequently asked questions

Yes — unlike the Basic Calculator's left-to-right button entry, this evaluates full expressions using standard mathematical precedence.

Related tools

Basic Calculator

Matrix Calculator

Statistics Calculator

Chess ELO Calculator

Prime Number Checker

Permutations & Combinations Calculator