Scientific Calculator
Trigonometry, logarithms, powers and roots — all in one keypad.
Using the scientific calculator
This calculator supports the core operations you'd expect on a handheld scientific calculator: addition, subtraction, multiplication, division, parentheses for controlling order of operations, powers using the ^ symbol, square roots, and the trigonometric functions sine, cosine and tangent, which are evaluated in radians. It also includes base-10 logarithms (log) and natural logarithms (ln), plus the constant π for quick access when working with circles or periodic functions.
Build an expression by tapping the keys in order — for example 2 × (3 + √(16)) − sin(0) — then press "=" to evaluate. The display shows your full expression on the small line above and the running entry on the large line below, so you can see exactly what will be calculated before committing. Press "⌫" to remove the last character if you make a mistake, or "C" to clear everything and start over.
Order of operations follows standard mathematical convention (parentheses, then exponents, then multiplication/division, then addition/subtraction), so you rarely need extra parentheses beyond what the calculation actually requires. Keep in mind results are rounded to 10 decimal places to avoid floating-point display noise, which is more than enough precision for everyday calculations, homework, or quick engineering estimates.
Frequently asked questions
Does this calculator follow order of operations? Yes — multiplication and division are evaluated before addition and subtraction, the same PEMDAS/BODMAS rules taught in school, so chained expressions come out correctly.
What do the memory buttons do? M+ and M- add or subtract the current display value from a stored memory slot, and MR recalls it — useful for running totals across several separate calculations.
Can I use it for trigonometry? Yes, the sin, cos, and tan functions are available and operate in degrees by default, covering the most common everyday and classroom use cases.
Good to know
Beyond basic arithmetic, this calculator handles trigonometric functions (sin, cos, tan and their inverses), logarithms (natural log and log base 10), exponents, and roots — the same operations covered on a standard handheld scientific calculator. Angle mode (degrees vs. radians) matters most for trig functions: sin(90) in degree mode returns 1, but the same input in radian mode returns a completely different value, so always confirm which mode you’re in before reading a trig result.
Why does my trig answer look wrong? It's almost always a degrees/radians mismatch — switch modes and recalculate.
Does it support order of operations (PEMDAS)? Yes — multiplication and division are evaluated before addition and subtraction, and parentheses always take priority, matching standard mathematical convention.