Solverly

Scientific Calculator

Type or tap keys to compute instantly. Supports sin, cos, tan, ln, log, √, powers, factorial (!), nCr, nPr, memory, and a degree/radian toggle.

Your calculation

Result

Degrees
Enter an expression…

Live evaluation. Press “=” (or hit Enter) to store the answer as Ans.

Results interpretation

  • Trig inputs respect the current angle mode. If your result seems off by a factor, check the Degrees/Radians toggle.
  • Factorials, permutations and combinations are limited to values ≤ 170 to avoid overflow.
  • Percent (%) is postfix: 12% equals 0.12. You can also write 50% of 80 as 0.5*80.
  • Results are rounded for display using your Decimal places setting. Internally the engine uses full JS double precision during evaluation.

How this calculator works

Expressions are sanitized and translated (e.g., ^ → power, π →pi, x! → fact(x)), then evaluated in a locked scope that exposes only whitelisted math functions and constants. Trigonometric functions convert to radians automatically when the mode is set to Degrees. Inverse trig functions return degrees when in Degrees mode.

What this Scientific Calculator does

This scientific calculator is built for everyday problem solving: quick arithmetic, trigonometry with a degree/radian toggle, roots and powers, natural and base-10 logs, factorials and combinatorics, and a few conveniences such as memory keys, a running answer variable (Ans), and a scrollable history. The interface is designed to keep results visible while you type: as you enter an expression, the calculator validates it, translates common symbols, and displays the live result. When you press “=”, the value is stored as Ans for reuse in the next line, making chained computations painless.

Under the hood the evaluator follows standard order of operations, then applies function calls and postfix operators like factorial and percent. Trigonometry respects your angle mode—Degrees for classroom-style problems, Radians for calculus and engineering. Inverse trig returns the matching unit to avoid mismatched results. Factorials and combinatorics are implemented with guardrails to prevent overflow; if a number would exceed floating-point limits, the calculator stops with a helpful message rather than producing Infinity.

The goal isn’t symbolic algebra but fast, accurate numerics. That means you can check a geometry step, estimate a finance figure, or sanity-check a probability question instantly. For reproducibility you can copy a URL with inputs preserved, or tap “Get AI Suggestions” to receive short notes about interpretation, domain limits, or alternative forms. As with any calculator, the result is only as good as the inputs: ensure your units, angle mode, and function domains are correct for the problem you’re solving.

Limitations: the engine evaluates real numbers (not complex), and it doesn’t simplify symbolic expressions. If you need exact algebraic manipulation, use a CAS tool. For numeric work—from physics homework to quick statistics—this tool’s speed, built-in constants, and clean layout aim to make the math the easiest part of your task.

How to use the Scientific Calculator (functions, angles, memory, notation)

This scientific calculator evaluates full expressions with PEMDAS order of operations, parentheses, powers/roots, trigonometry (sin, cos, tan and inverses), logs (ln, log10), exponents (a^b), factorial (n!), and combinatorics (nPr, nCr). Toggle Degrees/Radians for trig. Use Ans to reuse the last result and memory keys M+, MR, MC to store and recall values.

Key tips

  • Parentheses first: Wrap parts you want evaluated together, e.g. sin(30) or (2+3)^4.
  • Angle mode: Choose Deg for common angles (30°, 45°, 60°) or Rad for values like π/6.
  • Scientific notation: Enter numbers like 2.5e3 (= 2500) or 3.2e-4.
  • Memory: M+ adds the screen value to memory, MR recalls, MC clears.
  • Clear: C clears the current entry; AC clears the whole expression and state.
Order of operations (PEMDAS) & common functions

PEMDAS: Parentheses → Exponents → Multiplication/Division → Addition/Subtraction.

Roots: √x is x^(1/2); ∛x is x^(1/3).

Logs: ln(x) is base e; log(x) is base 10.

Combinatorics: nPr = permutations, nCr = combinations; both require whole-number inputs with n ≥ r ≥ 0.

Use cases & examples

Example 1 — Trig with degrees

  1. Set angle mode to Degrees.
  2. Evaluate 3·sin(30°) + ln(5).
  3. Because sin(30°)=0.5, result ≈ 3×0.5 + ln(5) ≈ 1.5 + 1.60944 = 3.10944.

Example 2 — Scientific notation and logs

  1. Compute (2.5e3 × 3.2e-4) ÷ (√7^2 + log(1000)).
  2. 2.5e3=2500; 3.2e-4=0.00032 → product 0.8. √7^2=7; log(1000)=3 → denominator 10.
  3. Final: 0.08.

Example 3 — Factorial, permutations, combinations

  • 5! = 120
  • 10P3 = 720
  • 10C3 = 120

Scientific Calculator — FAQ

How do I switch between degrees and radians?

Use the angle toggle (Deg/Rad). Trig functions follow the selected mode.

What does e mean on the display?

Scientific notation. For example, 6.02e23 means 6.02 × 1023.

How do I enter exponents and roots?

Use the power key (xy) for exponents; roots are powers like x^(1/2) or use dedicated √ and ∛ keys.

What’s the difference between ln and log?

ln is natural log (base e); log is base 10.

How do I use factorial, permutations, and combinations?

Use n!, nPr, and nCr. Inputs must be whole numbers with n ≥ r ≥ 0.

Why do I get a domain error on trig or logs?

Check angle mode for trig. For logs, inputs must be positive; for even roots, the radicand cannot be negative.

What does Ans do?

It recalls the last evaluated result so you can continue calculating without retyping.

How do memory keys work?

M+ adds the current value to memory, MR recalls it, MC clears it.

Does the calculator follow PEMDAS automatically?

Yes. Use parentheses to control evaluation order explicitly when needed.

Can I mix decimals and fractions?

Yes. The engine evaluates the numeric value of each token regardless of format.