Scientific Calculator
Full scientific calculator online with trigonometry (sin, cos, tan, arcsin, arccos, arctan), logarithms (log, ln, log₂), exponents, square roots, cube roots, factorials, hyperbolic functions, and more. Includes calculation history, memory functions, DEG/RAD mode, and full keyboard support — free, private, and no signup required.
Full scientific calculator with trigonometry, logarithms, exponents, roots, and more. Supports keyboard input. All calculations run locally in your browser — no signup required.
Keyboard supported: digits, +−×÷, Enter, Backspace, Escape, %
Why Use Our Scientific Calculator?
Full Scientific Calculator Online
Perform trigonometry (sin, cos, tan, arcsin, arccos, arctan), logarithms (log, ln, log₂), exponents, square roots, cube roots, factorials, hyperbolic functions, and more — all in your browser with zero loading time. Supports both DEG and RAD angle modes.
Secure Scientific Calculator Online
The scientific calculator runs entirely client-side in your browser. Your calculations are never sent to any server, stored, or tracked — complete privacy for academic, professional, and personal use.
Scientific Calculator — No Installation
Use the scientific calculator directly in any modern browser with no downloads, apps, or plugins required. Full keyboard support for fast input. Works on desktop, tablet, and mobile — 100% free forever.
Calculation History, Memory & 2nd Functions
Every calculation is saved in a scrollable history panel — click any result to reuse it. Five memory functions (MC, MR, M+, M−, MS), an Ans key for the last result, and a 2nd mode that unlocks inverse trig, 10ˣ, eˣ, and more.
Common Use Cases for Scientific Calculator
High School & University Mathematics
Students use the scientific calculator for algebra, trigonometry, calculus, and statistics coursework. The scientific calculator handles sin, cos, tan, logarithms, and exponents — everything needed for math and science homework without installing any software.
Physics & Engineering Calculations
Engineers and physicists use the scientific calculator for force, energy, wave, and circuit calculations involving trigonometric functions, exponentials, and logarithms. The DEG/RAD toggle ensures correct angle mode for every formula.
Chemistry & Biochemistry
Chemists use the scientific calculator for pH calculations (log), Arrhenius equation (eˣ, ln), and stoichiometry. The scientific calculator's natural log and base-10 log functions handle all standard chemistry formulas accurately.
Finance & Statistics
Financial analysts use the scientific calculator for compound interest (xʸ), present value calculations, and statistical formulas. The memory functions allow multi-step calculations without losing intermediate results.
Programming & Computer Science
Developers use the scientific calculator to verify algorithm outputs, compute hash values, and check mathematical edge cases. The factorial function, power operator, and modulo support cover common programming math needs.
Everyday Advanced Arithmetic
Anyone needing more than a basic calculator uses the scientific calculator for percentage calculations, square roots, and multi-step arithmetic. The calculation history panel lets you review and reuse previous results without retyping.
Understanding the Scientific Calculator
What is a Scientific Calculator?
A scientific calculator is an advanced calculator that goes beyond basic arithmetic to include mathematical functions used in science, engineering, and mathematics. Unlike a basic calculator, a scientific calculator provides trigonometric functions (sin, cos, tan and their inverses), logarithmic functions (log base 10, natural log, log base 2), exponential functions (eˣ, 10ˣ, xʸ), roots (square root, cube root), factorial (n!), and hyperbolic functions (sinh, cosh, tanh). Our online scientific calculator replicates all these functions in your browser with full keyboard support, calculation history, and memory functions — no download or installation required.
How Our Scientific Calculator Works
- Enter Your Calculation: Use the on-screen buttons or your keyboard to enter numbers and operations. The scientific calculator supports all standard keyboard shortcuts — digits, +, −, ×, ÷, Enter for equals, Backspace to delete, and Escape to clear. The expression bar shows your full calculation as you type.
- Apply Functions: Click any function button (sin, cos, log, √x, etc.) to apply it to the current display value. Press the 2nd button to access inverse and alternate functions — sin becomes arcsin, log becomes 10ˣ, ln becomes eˣ, x² becomes x³, and √x becomes ∛x. Toggle DEG/RAD to switch angle mode for trigonometric functions.
- View History and Use Memory: Every result is saved in the history panel on the right — click any entry to reuse it. Use MS to store a value in memory, MR to recall it, M+/M− to add or subtract from memory, and MC to clear memory. The Ans key recalls the most recent result.
Scientific Calculator Function Reference
- Trigonometry: sin, cos, tan (in DEG or RAD) — press 2nd for arcsin, arccos, arctan (inverse trig). sinh, cosh, tanh for hyperbolic functions.
- Logarithms & Exponentials: log (base 10), ln (natural log), log₂ (base 2) — press 2nd for 10ˣ and eˣ. Use xʸ for arbitrary powers.
- Roots & Powers: √x (square root), ∛x (cube root via 2nd+√x), x² (square), x³ (cube via 2nd+x²), xʸ (power operator).
- Special Functions: x! (factorial), 1/x (reciprocal), % (percent), +/− (sign toggle), π (pi ≈ 3.14159), e (Euler's number ≈ 2.71828).
DEG vs RAD — When to Use Each
The DEG/RAD toggle controls how the scientific calculator interprets angles for trigonometric functions. Use DEG (degrees) for everyday geometry, navigation, and most school problems — a full circle is 360°. Use RAD (radians) for calculus, physics, and engineering — a full circle is 2π radians. For example, sin(90°) = 1 in DEG mode, while sin(π/2) = 1 in RAD mode. The current angle mode is always shown in the display status bar. When in doubt, check your textbook or formula sheet for the expected angle unit.
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Frequently Asked Questions About Scientific Calculator
A scientific calculator is an advanced calculator that includes trigonometric functions (sin, cos, tan), logarithms (log, ln), exponents, roots, factorials, and more — beyond basic arithmetic. Our online scientific calculator runs entirely in your browser with full keyboard support, calculation history, and memory functions — no signup required.
Enter the angle value, then click the sin, cos, or tan button. Make sure the angle mode (DEG or RAD) matches your input — click the DEG/RAD button to toggle. For example, to calculate sin(30°), set mode to DEG, enter 30, and click sin. The result is 0.5.
Click the "2nd" button to activate alternate functions. In 2nd mode, sin becomes arcsin (sin⁻¹), cos becomes arccos, tan becomes arctan, log becomes 10ˣ, ln becomes eˣ, x² becomes x³, and √x becomes ∛x. The 2nd button label turns blue when active. Click it again to return to normal mode.
DEG mode interprets angles in degrees (0–360 for a full circle). RAD mode interprets angles in radians (0–2π for a full circle). Use DEG for everyday geometry and most school problems. Use RAD for calculus, physics, and engineering. sin(90) in DEG = 1; sin(π/2) in RAD = 1.
MS stores the current display value in memory. MR recalls the stored value. M+ adds the current value to memory. M− subtracts the current value from memory. MC clears memory to zero. A blue "M" indicator appears in the display when memory contains a non-zero value.
Yes. The scientific calculator supports full keyboard input: digits 0–9, decimal point, +, −, *, /, ^ for power, Enter or = for equals, Backspace to delete, Escape to clear, and % for percent. Click anywhere on the page (not in a text field) to ensure keyboard focus.
Yes. The scientific calculator runs 100% locally in your browser. Your calculations are never sent to any server, stored in a database, or tracked in any way. Everything stays completely private on your device.
Yes — the scientific calculator is 100% free with no signup, no account, and no usage limits. Use it as many times as you need, completely free forever. There are no ads, no premium tiers, and no data collection.
Enter the non-negative integer, then click the x! button. For example, enter 5 and click x! to get 120 (5! = 5×4×3×2×1). The scientific calculator supports factorials up to 170! — values above 170 return Infinity as they exceed JavaScript's number range.