TheCalcHub

Finance & Money Calculators

Financial calculations for personal and business use

8 tools available

Mortgage Calculator

An online tool to calculate your monthly mortgage payments, total interest paid, and amortization schedule.

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ROI Calculator

An online tool to calculate the Return on Investment (ROI) for a business or financial investment.

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Compound Interest Calculator

An online tool to calculate compound interest on an investment or savings account, showing how your money can grow over time.

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Loan Amortization Calculator

Calculate loan amortization schedules showing monthly payments split between principal and interest. Visualize your debt payoff.

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Cryptocurrency Profit/Loss Calculator

Calculate crypto trading profits, losses, fees, and taxes. Advanced portfolio analysis for Bitcoin, Ethereum, and 20+ cryptocurrencies.

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Online Data Visualization Tool

Turn CSV data into professional charts instantly. Create bar, line, pie, and scatter plots with real-time updates and easy exports.

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Inflation Calculator

Calculate inflation impact with historical CPI data from 1950-2024. Includes inflation, deflation, future value, real returns, and savings goal calculators.

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Advanced Salary Calculator

Calculate your take-home pay after taxes and deductions. Includes pre-tax and post-tax deductions, bonus analysis, and household income comparison.

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Health & Fitness Calculators

Health and fitness calculations for wellness tracking

5 tools available

Hydration Calculator

Calculate your personalized daily water intake based on medical guidelines, activity level, climate, and health factors.

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BMI Calculator

An easy-to-use online tool to quickly calculate your Body Mass Index (BMI) and determine if you are in a healthy weight range based on your height and weight.

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BMI Calculator for Pregnant Women

Easily estimate your pre-pregnancy BMI and see healthy weight gain guidelines for pregnancy.

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Calorie Calculator

Calculate your estimated daily calorie needs for weight loss, gain, or maintenance, based on your activity level and personal details.

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Caffeine Half-Life Calculator

Track caffeine consumption and calculate personalized half-life based on your unique factors. Get accurate predictions for when caffeine clears.

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Mathematics Calculators

Mathematical calculations and scientific functions

12 tools available

Basic Calculator

Free online basic calculator for everyday math. Perform addition, subtraction, multiplication, and division quickly and easily.

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Scientific Calculator

A powerful online scientific calculator for complex math, engineering, and scientific problems, including trigonometric and logarithmic functions.

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Percentage Calculator

An all-in-one online tool to calculate percentages, including 'percent of', 'percent change', and 'percent increase/decrease'.

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Fraction Calculator

Add, subtract, multiply, and divide fractions with step-by-step solutions and simplified results.

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Quadratic Equation Solver

Solve quadratic equations using the quadratic formula with step-by-step solutions and graphical visualization.

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Area & Perimeter Calculator

Calculate area and perimeter for various geometric shapes including rectangles, circles, triangles, and polygons.

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Mean, Median, Mode Calculator

Calculate statistical measures including mean (average), median, mode, and range for any data set.

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Standard Deviation Calculator

Calculate standard deviation, variance, and other statistical measures for population and sample data.

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Probability Calculator

Calculate probabilities for various scenarios including combinations, permutations, and statistical distributions.

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Sequence & Series Calculator

Calculate arithmetic and geometric sequences, find nth terms, and compute series sums with step-by-step solutions.

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Graphing Calculator

Plot and analyze mathematical functions with interactive graphs, including polynomials, trigonometric functions, exponentials, and more.

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Matrix Calculator

Perform comprehensive matrix operations including addition, subtraction, multiplication, determinants, inverses, and transposes with step-by-step solutions.

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Business & Professional Calculators

Business calculations for professionals and entrepreneurs

4 tools available

Profit Margin Calculator

Calculate gross profit margin, net profit margin, and markup percentages for your business.

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Freelance Rate Calculator

Calculate your ideal freelance hourly rate based on expenses, taxes, desired income, and business goals.

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Time Tracking Calculator

Track work hours, calculate overtime pay, and manage time entries for accurate payroll calculations.

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Break-Even Calculator

Calculate your business break-even point to determine when your revenue will equal your costs.

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Lifestyle & Personal Calculators

Personal life calculations and planning tools

8 tools available

Pregnancy Due Date Calculator

Calculate your baby's estimated due date based on your last menstrual period (LMP), conception date, or a recent ultrasound.

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Dog Age Calculator

Convert your dog's age to human years with our accurate calculator that considers breed size and modern veterinary research.

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Cat Age Calculator

Convert your cat's age to human years with our calculator based on feline development stages and veterinary guidelines.

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Age Calculator

Calculate your exact age in years, months, days, hours, and more. Find the age difference between two dates.

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Date Difference Calculator

Calculate the difference between two dates in years, months, days, weeks, hours, and more.

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Carbon Footprint Calculator

Estimate your annual carbon emissions from energy, travel, and lifestyle. Get a clear breakdown of your environmental impact.

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Dog Ownership Cost Calculator

Calculate the complete cost of dog ownership including upfront expenses, monthly costs, and lifetime financial commitment.

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Cat Ownership Cost Calculator

Estimate the true cost of owning a cat: upfront, monthly, and lifetime.

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Engineering & Science Calculators

Engineering and scientific calculations

13 tools available

Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's Law and electrical power formulas.

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Momentum Calculator

Calculate momentum, impulse, and analyze collisions with our comprehensive physics calculator. Solve mechanics problems using conservation laws.

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Pressure Vessel Calculator

Calculate pressure vessel wall thickness and ratings using ASME standards for cylindrical and spherical vessels.

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Electrical Power Calculator

Calculate electrical power, current, voltage, and resistance for AC and DC circuits.

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Flow Rate Calculator

Calculate fluid flow rate, velocity, and pipe sizing for hydraulic and pneumatic systems. Essential engineering tool for flow analysis and pipe design.

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Wire Gauge Calculator

Calculate wire gauge (AWG) requirements for electrical installations based on current, voltage drop, and distance.

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Kinematic Calculator

Calculate motion parameters using kinematic equations for velocity, acceleration, displacement, and time.

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Beam Deflection Calculator

Calculate beam deflection, bending moment, and stress for various beam loading conditions.

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Density Calculator

Calculate density, mass, or volume using the density formula (ρ = m/V) for various materials.

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Torque Calculator

Calculate torque, force, and distance using torque equations for mechanical engineering applications.

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Efficiency Calculator

Calculate system efficiency, input power, output power, and energy losses for engineering applications.

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Resistor Color Code Calculator

Calculate resistor values from color bands with precision and ease. Supports 4, 5, and 6-band resistors with automatic tolerance calculation and SMD code conversion.

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Logic Gate Simulator

Design and simulate digital logic circuits with interactive logic gates. Build complex circuits using AND, OR, NOT, NAND, NOR, XOR, and XNOR gates.

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Unit Conversion Calculators

Convert between different units of measurement

3 tools available

Unit Converter

Convert units across physics, chemistry, engineering, medicine & more. Features grouped interface, smart search, real-time conversion for scientific precision.

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Epoch Time Converter

Convert Unix/Epoch timestamps to human-readable dates and vice versa. Perfect for developers and system administrators.

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Universal Time Converter

Convert time between any time zones, plan international meetings, and access a world clock. Features automatic DST handling and Unix timestamp conversion.

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Education Calculators

Educational and academic calculations and tools

2 tools available

Global GPA & CGPA Calculator

Calculate GPA/CGPA using region-specific grading systems for 14+ countries. Smart, adaptive calculator for global students.

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GPA Conversion Calculator

Convert academic grades between global educational systems in North America, Europe, Asia, Oceania, and Africa. Features 150+ countries with confidence ratings.

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Tools Calculators

Handy tools to help you with various tasks

14 tools available

Tip Calculator

Calculate tips, split bills, and handle any tipping scenario with our comprehensive tip calculator. Features smart rounding, tax options, and bill splitting.

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Password Strength Calculator

Check password strength and generate secure passwords with our free online tool. Real-time analysis, private, and completely client-side for maximum security.

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Universal Color Palette & Display Tester

Professional display testing tool for dead pixel detection, color accuracy verification, and screen health assessment with complete privacy protection.

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Universal Image Toolkit

Professional image editing tool with resize, crop, rotate, filters, and format conversion. 100% private and browser-based.

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LLM Cost Calculator

Calculate LLM API costs for OpenAI, Anthropic, Google, and other providers. Compare pricing, estimate token usage, and optimize AI project budgets.

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PDF to Text Converter

Extract text from PDF documents quickly and accurately with our free online tool. Supports standard PDFs and scanned documents with OCR. 100% privacy - all processing happens in your browser.

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Hello World Generator

Generate Hello World programs in multiple programming languages. Perfect for beginners learning their first programming language.

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Ambient Sound Player

Free ambient sound player with nature sounds, rain, birds, coffee shop & more. Perfect for focus, relaxation, sleep & productivity. Play online now.

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Encode/Decode Tool

Transform text with our comprehensive encoding/decoding tool. Supports URL encoding/decoding, Base64 conversion, and MD5/SHA-256 hashing with advanced features

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Scaled Height Comparison Tool

Compare heights visually with our scaled height comparison tool. Add multiple people and understand height differences at a glance.

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Interactive Periodic Table Calculator

Comprehensive periodic table calculator with all 118 elements, detailed atomic properties, electron configurations, and instant unit conversions.

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Advanced Random Number Generator

Generate truly random numbers with multiple algorithms, statistical analysis, and complete privacy. Perfect for gaming, research, and security applications.

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Text Analyzer & Word Counter

A comprehensive and real-time Text Analyzer & Word Counter that goes far beyond basic counting.

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Ultimate Offline Text Pad

Privacy-first text editor with real-time analytics, Pomodoro timer, voice typing, themes, templates, and offline operation. Perfect for writers and students.

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Science & Physics Calculators

Scientific calculations and physics formulas

1 tools available

Newton Formulas Calculator

Comprehensive calculator for Newton's laws, gravitation, momentum, energy, and related physics formulas. Solve mechanics problems step-by-step.

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Can't Find What You're Looking For?

We're constantly adding new calculators based on user feedback. Let us know what calculator you need!

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