Scientific Calculator
A scientific calculator with trigonometry, logarithms, powers, roots, and memory keys, for study, lab work, and any math beyond basic arithmetic. It respects proper order of operations.
What makes it 'scientific'
Beyond the four basic operations, a scientific calculator adds the functions used in algebra, trigonometry, and science: sine, cosine, and tangent; natural and base-10 logarithms; exponents and roots; constants like pi; and memory storage. Crucially, it evaluates expressions using correct operator precedence, so multiplication and powers happen before addition, the way written math works.
That precedence is the main reason results differ from a basic calculator: 2 + 3 x 4 is 14 here, not 20, because multiplication binds tighter than addition.
Avoiding the common mistakes
Most wrong answers come from input details, not the math.
- Check whether trig functions expect degrees or radians, and set the mode accordingly.
- Use parentheses to make grouping explicit rather than trusting precedence in your head.
- Watch the difference between the minus sign and the negative sign for a single value.
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FAQs
Does it use degrees or radians for trig?▼
Both are supported via a mode setting. Getting an unexpected trig result is almost always because the mode does not match your input; set degrees for everyday angles and radians for calculus.
Why is 2 + 3 x 4 equal to 14 and not 20?▼
Because it follows order of operations: multiplication is done before addition. 3 x 4 is 12, plus 2 is 14. Use parentheses if you want the addition first.
How do the memory keys work?▼
Memory lets you store a value (M+, MS), recall it (MR), and clear it (MC), so you can hold an intermediate result while doing other steps.
What is the difference between ln and log?▼
ln is the natural logarithm (base e), and log is usually base 10. Using the wrong one changes the result, so pick the base your problem needs.
Is my calculation private?▼
Yes. Everything runs in your browser; no input is uploaded.
How do I enter powers and roots?▼
Use the power key (often x^y) for exponents and the root function for square or nth roots. Wrap the base or exponent in parentheses when it is an expression.
Why do I get a tiny decimal instead of a round number?▼
Floating-point arithmetic cannot represent every value exactly, so results like a sine of a special angle may show a minuscule remainder. Round to the precision you need.
Can it handle scientific notation?▼
Yes. Very large or very small numbers are shown and can be entered in scientific notation (like 1.5e9).
Does it solve equations or just evaluate expressions?▼
It evaluates expressions and functions. It is not an equation solver or graphing calculator, so it computes a result from what you enter rather than solving for an unknown.
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