Welcome to Online Calculator

Your All-in-One Calculator Solution

Online Calculator provides a comprehensive suite of free online calculators for all your mathematical, financial, and statistical needs. Whether you're a student solving algebra problems, a professional working with scientific calculations, or planning your finances with our amortization calculator, we've got you covered.

Our online calculation tools are designed to be intuitive while offering advanced functionality when you need it. All calculations are performed in real-time with no server processing required - your data stays private on your device.

Why Choose Our Calculators?

Our Calculators

Basic Calculator

Perform simple arithmetic operations like addition, subtraction, multiplication, and division with our clean, easy-to-use interface.

Scientific Calculator

Advanced mathematical functions including trigonometry (sin, cos, tan), logarithms, powers, roots, and more for students and professionals.

Age Calculator

Calculate exact age in years, months, and days between two dates. Perfect for birthdays, anniversaries, and time tracking.

Amortization Calculator

Generate complete amortization schedules for loans with detailed breakdowns of principal and interest payments.

Algebra Calculator

Solve algebraic equations, simplify expressions, and work with polynomials and matrices.

Date & Time Calculator

Add or subtract time from dates, calculate durations between dates, and convert between time units.

Percentage Calculator

Calculate percentages, increases, decreases, and differences between values with ease.

Root Calculator

Find square roots, cube roots, and nth roots of any number with precision.

Statistics Calculator

Calculate mean, median, mode, standard deviation, variance, correlation, T-test and more. Perfect for students and researchers.

Standard Deviation Calculator

Calculate standard deviation, variance, and mean for statistical analysis of data sets.

Key Features

Dark Mode

Easily switch between light and dark themes for comfortable use in any lighting condition.

Calculation History

Review your past calculations with our built-in history feature that saves your work.

Keyboard Support

Use your keyboard for faster calculations with comprehensive shortcut support.

Memory Functions

Store and recall values with our memory functions (M+, M-, MR, MC).

Responsive Design

Works perfectly on all devices from desktop computers to mobile phones.

Privacy Focused

All calculations happen in your browser - no data is sent to our servers.

Calculator Guides

Basic Calculator

Our Basic Calculator provides essential arithmetic functions for everyday calculations. Perfect for quick math without complexity, it handles addition, subtraction, multiplication, and division with precision. The clean interface features large buttons and instant results, making it ideal for all users. Memory functions allow you to store and recall values during calculations. Whether you're balancing your checkbook or doing homework, this calculator offers reliability and simplicity. The responsive design works flawlessly on any device, and keyboard support enables fast data entry.

Scientific Calculator

The Scientific Calculator is designed for students and professionals in STEM fields. It includes advanced functions like trigonometry, logarithms, exponents, and roots. Switch between degrees and radians for angular calculations, and use the memory functions for complex equations. The intuitive layout groups related functions together, while the history feature lets you review past calculations. Perfect for algebra, calculus, physics, and engineering problems, this calculator brings powerful computation to your browser with no installation required.

Age Calculator

Our Age Calculator precisely determines time spans between dates in years, months, and days. Ideal for calculating ages, service periods, or project durations, it accounts for leap years and varying month lengths. Simply enter start and end dates to get an accurate breakdown. Useful for birthday planning, HR calculations, or historical research, this tool eliminates manual date counting errors. The results can be copied for documentation or sharing. The clean interface makes date selection easy with calendar pickers and validation for correct date formats.

Amortization Calculator

The Amortization Calculator provides complete loan repayment schedules, showing how each payment divides between principal and interest. Enter loan amount, term, and rate to see the full amortization table with yearly and monthly summaries. Visualize how extra payments reduce total interest and shorten loan terms. Essential for mortgage planning, auto loans, or personal finance decisions, this tool helps borrowers understand their repayment obligations. Export results for comparison or financial planning. The detailed output helps make informed borrowing decisions.

Algebra Calculator

Solve algebraic equations and simplify expressions with our Algebra Calculator. It handles linear equations, quadratic equations, and systems of equations with step-by-step solutions. The tool supports polynomial operations, factoring, and expansion, making it perfect for students learning algebra concepts. Enter your equation using natural mathematical notation and get instant solutions with explanations. The calculator shows work to help understand the solving process, serving as an excellent learning aid for algebra homework and test preparation.

Date & Time Calculator

Add or subtract time from dates, calculate durations between events, and convert time units with our Date & Time Calculator. Determine project deadlines, countdown to events, or calculate business days between dates. The tool handles complex time arithmetic including hours, minutes, and seconds. Time zone conversions and workday calculations help with scheduling across regions. Perfect for event planning, project management, or historical research, this calculator makes date and time math simple and accurate.

Percentage Calculator

Calculate percentages, increases, decreases, and differences effortlessly with our Percentage Calculator. Determine tips, discounts, tax rates, or statistical changes with precise results. The tool offers multiple calculation modes: find what percent X is of Y, calculate X percent of Y, or determine the increase/decrease percentage between values. Ideal for financial analysis, shopping discounts, grade calculations, and data interpretation. The intuitive interface presents results clearly with optional step-by-step explanations for educational purposes.

Root Calculator

The Root Calculator computes square roots, cube roots, and nth roots of any number with precision. Enter the radicand and root degree to get the exact value with optional decimal places. The tool explains the calculation process, making it valuable for students learning radical expressions. It handles perfect and imperfect roots, displaying both exact and decimal forms. Useful for geometry, engineering, and advanced mathematics, this calculator simplifies complex root calculations that would be tedious to compute manually.

Statistics Calculator

Simplify your statistical analysis with our Web-Based Statistics Calculator—a powerful tool designed to compute key metrics quickly and accurately. Whether you're working with population or sample data, this calculator helps you determine essential statistics such as mean, variance, standard deviation, and more with ease. Comprehensive Calculations – Compute mean, median, mode, range, variance, and standard deviation for any dataset. Population vs. Sample Data – Choose between population and sample calculations for precise results.

Standard Deviation Calculator

Analyze data variability with our Standard Deviation Calculator. Enter your dataset to calculate population or sample standard deviation, variance, and mean. The tool guides you through the calculation steps, helping understand statistical concepts. Ideal for research, quality control, and academic work, it processes both small and large datasets efficiently. Results include a complete breakdown of the calculation process, making it excellent for learning statistics. Export your analysis for reports or further processing in spreadsheet applications.

Frequently Asked Questions

Are these calculators really free to use?

Yes, all our online calculators are completely free to use with no hidden costs or registration requirements.

Do you store my calculation data?

No, all calculations are performed locally in your browser. We don't store any of your data on our servers.

Can I use these calculators on my mobile device?

Absolutely! Our calculators are fully responsive and work perfectly on smartphones, tablets, and desktop computers.