What functions does this scientific calculator support?

This calculator supports all standard scientific functions including trigonometry (sin, cos, tan, inverse), logarithms (log, ln, log₂), exponentials, factorials, permutations (nPr), combinations (nCr), and more. It also supports complex numbers, matrix operations, and statistical analysis.

Can this calculator handle complex numbers?

Yes! Switch to COMPLEX mode using the MODE button. Enter complex numbers using the format a+bi (e.g., 3+4i). The calculator performs all arithmetic operations on complex numbers and displays results in a+bi format.

How do I use Matrix operations?

Switch to MATRIX mode via the MODE button. Click "Mat A" or "Mat B" to enter 2×2 or 3×3 matrices. Then use operations like det(A) for determinant, inv(A) for inverse, T(A) for transpose, and A+B or A×B for arithmetic operations.

How can I store values in memory?

Use M+ to add the current result to memory, M- to subtract, MC to clear memory, and MR to recall the memory value. The memory status displays in the calculator screen. You can also use "M" in expressions.

What is the precision of the calculations?

This calculator uses high-precision floating-point arithmetic with up to 10 decimal places for most calculations. For financial or scientific calculations requiring higher precision, Decimal.js is used for critical operations.

Can I use physical keyboard input?

Yes! You can type numbers (0-9), operators (+, -, *, /), parentheses, press Enter to calculate, Backspace to delete, and Escape to clear all. The calculator responds to both button clicks and keyboard input.

Written & reviewed byNarasimha MakireddiLast reviewed July 2026How we verify

Verify results independently. Results are provided as-is for convenience. Double-check any figure before using it in academic, professional, or financial work. See how results are validated on our Verification Methodology page, or read the full Terms of Service.

Scientific Calculator

Casio ClassWiz-style · Standard · Complex · Matrix · Statistics

STANDARDDEG

Understanding Scientific Calculations

Scientific calculators are powerful tools used by engineers, mathematicians, physicists, and students to solve complex mathematical problems involving trigonometric functions, logarithms, exponentials, matrices, and statistical analysis.

Standard Mode

Basic mathematical operations with scientific functions like trigonometry, logarithms, roots, and factorials.

Complex Numbers

Advanced calculations with imaginary numbers (using i notation). Essential for electrical engineering and physics.

Matrix Operations

Perform linear algebra computations: determinants, inverses, transpose, addition, and multiplication of matrices.

Statistics

Analyze data sets with statistical measures: mean, standard deviation, regression analysis, and correlation coefficients.

Key Features & How to Master Them

1. Angle Units (DEG/RAD)

Press DEG/RAD to toggle between degrees and radians. Degrees (0-360°) are common for everyday use. Radians (0-2π) are used in calculus and advanced math. Example: sin(90°) = 1, but sin(π/2 radians) = 1.

2. Trigonometric Functions (sin, cos, tan)

Essential for engineering, physics, and navigation. Use SHIFT + sin/cos/tan to access inverse functions (asin, acos, atan). Formula: sin(45°) = 0.7071, useful for wave analysis and angle calculations.

3. Logarithmic & Exponential Functions (log, ln, e^)

log = logarithm base 10 (common in engineering), ln = natural logarithm (calculus, finance). Use SHIFT+log for 10^x, SHIFT+ln for e^x. Example: log(100) = 2, ln(e) = 1.

4. Memory Functions (M+, M-, MR, MC)

M+ adds to memory, M- subtracts, MR recalls value, MC clears. Useful for multi-step calculations. Example: Calculate multiple values and accumulate them in memory.

5. Matrix Operations (A, B, det, inv, T)

Enter matrices via Mat A/Mat B buttons. det (determinant) useful for solving linear equations. inv (inverse) for solving systems Ax=b. T (transpose) for reshaping data.

6. Combinatorics & Factorials (nCr, nPr, !)

nCr = combinations (selection order doesn't matter), nPr = permutations (order matters), ! = factorial. Example: 5! = 120, nCr(5,2) = 10 ways to choose 2 items from 5.

Real-World Applications

Engineering

Calculate structural angles, forces using trigonometry. Use matrices for finite element analysis. Example: Bridge load calculations.

Physics

Wave equations using sin/cos. Exponential decay (radioactive materials). Logarithmic scales (decibels, Richter scale).

Finance

Compound interest using e^x. Logarithmic returns. Matrix methods for portfolio optimization.

Data Analysis

Statistical measures (mean, std dev) for data insights. Linear regression for trend analysis and predictions.

Tips for Accurate Calculations

Verify Angle Mode

Always check if you're in DEG or RAD mode before calculating trigonometric functions. sin(90) in degrees is different from sin(90) in radians!

Use Parentheses for Grouping

Complex expressions need proper grouping. 2+3*4 = 14 (order of operations), but (2+3)*4 = 20. Always use parentheses to avoid ambiguity.

Check Precision Limits

Floating-point calculations have precision limits. Very small results may show rounding. For critical calculations, round only at the end.

Double-Check Matrix Dimensions

Matrix multiplication requires matching dimensions (m×n × n×p = m×p). Ensure matrices are properly sized before operations.

Validate Statistical Data

Ensure you have sufficient data points for meaningful statistics. Outliers can significantly affect standard deviation and regression analysis.

Frequently Asked Questions

How do I use DEG vs RAD mode?

Click the DEG/RAD button to toggle. DEG (degrees) is the default. When using trigonometric functions like sin, cos, tan, the input is interpreted in the current angle mode. For example, sin(45) in DEG mode returns 0.7071, while in RAD mode it returns 0.8509.

What does SHIFT do?

SHIFT toggles between primary and secondary functions. When SHIFT is active, sin becomes asin (arcsine), cos becomes acos, tan becomes atan, log becomes 10^, and ln becomes e^. Press SHIFT to activate/deactivate.

How do I use Matrix mode?

Switch to MATRIX engine via the MODE button. Click "Mat A" or "Mat B" to enter matrix values (2×2 or 3×3). Then use operations: det(A), inv(A), T(A), A+B, A×B to compute results.

How does Complex number mode work?

Switch to COMPLEX engine via MODE. Enter complex numbers using 'i', e.g., "3+4i". Operations are performed in complex arithmetic. Results show both real and imaginary parts (e.g., "3+4i").

What functions are supported?

All standard scientific functions: sin, cos, tan, log, ln, sqrt, exp, abs, nCr, nPr, factorial (!), plus constants π and e. Use parentheses for grouping: 2*(3+4). Order of operations (PEMDAS) is respected.

How do I use Memory (M)?

M+ adds current result to memory, M- subtracts, MC clears memory, MR recalls. You can also use 'M' in expressions. The memory value persists until cleared.

About This Scientific Calculator

This free online scientific calculator brings four engines to one page: a full standard scientific mode (trigonometry, logarithms, powers, factorials, nPr/nCr), a complex number mode, a matrix mode for 2×2 and 3×3 operations, and a statistics mode that summarises a dataset in one step. It evaluates complete expressions with correct operator precedence — type 2+3×4^2 and get 50, not 400 — and keeps a history of your recent calculations.

For lakhs of Indian students — CBSE and state-board classes 11–12, JEE and NEET aspirants, B.Tech and B.Sc undergraduates — a scientific calculator is daily equipment, but a physical Casio isn't always at hand and phone calculator apps lack matrix or statistics functions entirely. The same applies to working engineers checking a quick determinant, analysts needing a standard deviation without opening Excel, and teachers preparing answer keys. This page needs no installation, works on any device, and its DEG/RAD toggle, SHIFT-inverse functions, and keyboard input mirror the physical calculators students already know.

Why You Need This Calculator

Most calculation errors in exams and engineering work aren't conceptual — they're mechanical: evaluating in the wrong order, computing sin(30) in radian mode and getting −0.988 instead of 0.5, or slipping a sign in a 3×3 determinant expansion. A tool that evaluates the whole expression at once, shows the DEG/RAD state clearly, and does matrix arithmetic natively removes that entire class of mistakes. It's also a practice companion: checking each step of a worked solution against a reliable evaluator is one of the fastest ways to find where your method diverges. For everyday percentage and financial math, our percentage calculator is the quicker tool.

How to Use This Scientific Calculator

Pick a mode: Standard for everyday scientific work, Complex for a+bi arithmetic, Matrix for determinants/inverses/products, Statistics for dataset summaries.
Check DEG/RAD before any trigonometry — school problems are usually degrees, calculus is radians. This single toggle causes more wrong answers than any other button.
Type or tap the full expression — the calculator follows BODMAS/PEMDAS precedence, so enter it as written in the problem. Use parentheses generously when unsure.
Use SHIFT for inverse functions: SHIFT+sin gives arcsin, SHIFT+log gives 10^x. Press Enter to evaluate and Backspace to correct — full keyboard input is supported.

In Statistics mode, paste or enter your values and read mean, median, mode, standard deviation, variance, and quartiles together. In Matrix mode, fill the grid and choose the operation — remember matrix multiplication is order-sensitive (A×B ≠ B×A), so enter matrices in the order the problem states.

Scientific Calculator — Four Computation Modes Explained

A scientific calculator goes beyond basic arithmetic to handle trigonometry, logarithms, exponentiation, complex numbers, matrix algebra, and statistical analysis. This online scientific calculator provides four independent modes in one interface, making it suitable for high school and undergraduate mathematics, engineering problems, data analysis, and financial modelling.

The Four Calculation Modes

Standard mode: Handles arithmetic, trigonometry (sin, cos, tan and their inverses), logarithms (log base-10, natural log), powers, roots, factorials, permutations (nPr), and combinations (nCr). Toggle between DEG and RAD for angle input.
Complex mode: Performs arithmetic on complex numbers in the form a + bi. Enter numbers like 3+4i and use standard operators. Results show real and imaginary parts separately.
Matrix mode: Supports 2×2 and 3×3 matrices. Calculate determinants, inverses, transposes, and perform matrix addition and multiplication.
Statistics mode: Enter a dataset and compute mean, median, mode, standard deviation, variance, and quartiles in one step.

Worked Examples

Trigonometry: sin(30°) = 0.5 | cos(60°) = 0.5 | tan(45°) = 1
Logarithms: log(1000) = 3 | ln(e²) = 2 | log₂(8) = 3
Complex: (3 + 4i) × (2 − i) = 10 + 5i (real part 6+4=10; imaginary part 8−3=5)
Statistics: Dataset {2, 4, 4, 4, 5, 5, 7, 9} → Mean = 5, Std Dev = 2

Physical keyboard input is fully supported: type numbers and operators directly, press Enter to evaluate, and Backspace to delete. The SHIFT key unlocks inverse functions — SHIFT + sin gives arcsin, SHIFT + log gives 10^x.

Real-World Usage Examples

Ishaan, class 12, Kanpur — board exam practice

Working through a probability paper, Ishaan needs how many ways a committee of 4 can be chosen from 10 students: nCr(10, 4) = 210. He then verifies a trigonometric identity by evaluating both sides at 37° in DEG mode. Checking each practice answer immediately — rather than at the end of a 3-hour session — shows him exactly which step of his method fails.

Anjali, Hyderabad — quick statistics without a spreadsheet

Anjali, a QA lead, has 12 test-cycle durations and needs the mean and standard deviation for a report. Statistics mode returns all summary measures in one paste — mean 43.2, σ 5.8, plus quartiles for the outlier check — faster than opening Excel and typing formulas. Takeaway: for one-off dataset summaries, a purpose-built mode beats a spreadsheet.

Accuracy & Common Questions

Is this scientific calculator accurate?

Yes — expressions are parsed with a proper tokenizer and shunting-yard algorithm (the same approach compilers use), so operator precedence is always correct, and computations use high-precision arithmetic rather than error-prone repeated floating-point shortcuts.

Why does sin(30) give −0.988 instead of 0.5?

You're in RAD mode — sin of 30 radians is −0.988. Switch the DEG/RAD toggle to DEG for degree-based problems. This is the single most common scientific calculator mistake in exams.

When should I use this vs the financial calculators?

Use this for raw mathematics. For money questions — loan EMIs, investment growth, tax — the dedicated tools like the EMI calculator and SIP calculator encode the formulas and Indian conventions for you.