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🧮 Scientific Calculator

Every calculator
you'd normally need, in one

Trig, logs, matrices, complex numbers, equations, statistics, number theory, a programmer mode, and graphing — free, private, instant.

DEG

🕘 Local History

Saved only on this device — never uploaded anywhere. Click an entry to reload it.

No history yet — calculate something above.
How To

How to use every mode

  1. Standard mode — basic arithmetic (+ − × ÷ %), parentheses, sign toggle (±), backspace, and full clear. Type with your keyboard or tap the keypad; press Enter or = to evaluate.
  2. Scientific mode — adds trig (sin/cos/tan and their inverses), hyperbolic functions, natural/base-10/base-n logs, powers and roots, e, π, factorial, nPr/nCr, and a random-number key. Tap DEG to cycle Degree → Radian → Gradian angle modes, which affects every trig function immediately.
  3. Memory keys — M+ adds the current result to memory, M− subtracts it, MR recalls the stored value into the display, MC clears it. An "M" badge shows when memory holds a nonzero value.
  4. Ans — every result is stored automatically; type ans in a new expression to reuse the last answer.
  5. Programmer mode — type a value into any of Decimal/Binary/Octal/Hex and the others update instantly. Set a word size (8/16/32/64-bit), then run AND, OR, XOR, NOT, or bit-shift operations on two decimal values.
  6. Matrix mode — pick 2×2 or 3×3, fill in Matrix A (and B, where relevant), then choose Add, Subtract, Multiply, Determinant, Inverse, or Transpose and click Calculate.
  7. Complex mode — enter the real and imaginary parts of A and B, then click Add/Subtract/Multiply/Divide, or get the modulus/argument of A alone.
  8. Equation Solver — choose Linear (ax + b = 0) or Quadratic (ax² + bx + c = 0), enter the coefficients, and solve; quadratic roots are shown as complex numbers when the discriminant is negative.
  9. Statistics — paste or type a list of numbers (comma, space, or newline separated) to get count, sum, mean, median, mode, min, max, range, variance, and standard deviation (population and sample).
  10. Number Theory — get the GCD and LCM of two numbers, check whether a number is prime, or get its full prime factorization.
  11. Graphing — type any function of x, set an x-range, and click Plot to render the curve on a canvas with axes and gridlines.
  12. Constants — browse a reference table of common mathematical and physical constants.
  13. Copy or reuse a result — click Copy Result to copy the current display value, or click any entry in Local History to load that exact expression back in.
Capabilities

Built to replace a shelf of separate calculators

➗
Full Arithmetic Parser
Real operator precedence and parentheses — not a naive left-to-right evaluator.
📐
Trig, Inverse & Hyperbolic
sin/cos/tan, asin/acos/atan, sinh/cosh/tanh and their inverses.
🔁
Degree / Radian / Gradian
One-tap angle mode switching that applies to every trig function instantly.
🧮
Logs, Powers & Roots
ln, log₁₀, log base n, square/cube/nth power, square/cube root, eˣ.
🎲
Factorials, nPr, nCr & Random
Combinatorics and a random number generator, built in.
💾
Memory Registers
M+, M−, MR, MC — plus an automatic Ans variable for chaining results.
🔢
Programmer Mode
Live binary/octal/decimal/hex conversion plus AND/OR/XOR/NOT/shift at any word size.
🔲
Matrix Operations
2×2 and 3×3 add, subtract, multiply, transpose, determinant, and inverse.
🌀
Complex Numbers
Add, subtract, multiply, divide, plus modulus and argument.
📉
Equation Solver
Linear and quadratic equations, with real or complex roots shown clearly.
📊
Descriptive Statistics
Mean, median, mode, variance, and standard deviation from a pasted list.
🔍
Number Theory
GCD, LCM, primality testing, and prime factorization.
📈
Function Graphing
Plot any f(x) over a custom range on a live canvas.
📚
Constants Reference
Common math and physics constants at a glance.
⌨️
Full Keyboard Support
Type numbers and operators directly; Enter to evaluate, Backspace to edit.
🍞
Fraction Display
Show the current result as a simplified fraction.
🕘
Local History
Every calculation saved to your browser only, one click to reload.
🔒
100% Private
Every calculation runs locally — nothing is ever sent to a server.

Frequently Asked Questions

Yes. Switch between Degree, Radian, and Gradian modes with the DEG/RAD/GRAD button — it affects all trig and inverse trig functions immediately.

Yes. Every result is stored as ANS, and typing "ans" inserts the last result into your next expression.

Yes. Matrix mode supports 2×2 and 3×3 addition, subtraction, multiplication, transpose, determinant, and inverse. Complex mode supports addition, subtraction, multiplication, division, modulus, and argument.

Yes. The Equation Solver handles linear equations (ax + b = 0) and quadratic equations (ax² + bx + c = 0), including complex roots when the discriminant is negative.

Yes. Programmer mode converts between binary, octal, decimal, and hexadecimal, and supports AND, OR, XOR, NOT, and bit-shift operations at 8/16/32/64-bit word sizes.

Yes. The Graphing panel plots y = f(x) for any expression using x as the variable, over a range you set, rendered live on a canvas.

No. History is stored only in your browser's local storage on this device. Click any entry to reuse it, or clear it at any time.

Enter a list of numbers and the Statistics panel returns count, sum, mean, median, mode, min, max, range, population and sample variance, and population and sample standard deviation.

Yes. Number keys, + − * / ^ ( ) . operators, Enter to evaluate, and Backspace to delete all work directly from your keyboard in Standard and Scientific mode.

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