500+ Free Online Calculators

Finance, Tax, Health, Math & Unit Conversion — 100 calculators in each category. Fast, accurate, and completely free. No sign-up required.

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Finance Calculators

100 free finance calculators covering everyday finance calculations.

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Tax Calculators

100 free tax calculators covering everyday tax calculations.

100 calculators →
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Health Calculators

100 free health calculators covering everyday health & fitness calculations.

100 calculators →
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Math Calculators

100 free math calculators covering everyday math calculations.

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Unit Converters

100 free unit converters covering everyday unit conversion calculations.

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All 500 Calculators

Every calculator on CalculatorAllFree.in, organized by category, linked directly below.

Finance Calculators (100)

All finance calculators — click any link to open the calculator.

Loan EMI Calculator Home Loan EMI Calculator Car Loan EMI Calculator Personal Loan EMI Calculator SIP Calculator Lumpsum Investment Calculator PPF Calculator Fixed Deposit Calculator Recurring Deposit Calculator Compound Interest Calculator Simple Interest Calculator NPS Calculator Retirement Planning Calculator Mutual Fund Return Calculator SWP Calculator CAGR Calculator ROI Calculator Net Worth Calculator Monthly Budget Calculator Savings Goal Calculator Credit Card Interest Calculator Debt Payoff Calculator Mortgage Calculator Rent vs Buy Calculator Home Down Payment Calculator Loan Amortization Calculator Gratuity Calculator EPF Calculator Salary Calculator In Hand Salary Calculator HRA Calculator Currency Exchange Calculator Inflation Calculator Future Value Calculator Present Value Calculator Annuity Calculator Bond Yield Calculator Stock Return Calculator Dividend Yield Calculator Break Even Point Calculator Profit Margin Calculator Markup Calculator Discount Calculator Business Loan Calculator Education Loan Calculator Gold Loan Calculator Loan Eligibility Calculator Loan Against Property Calculator FD Maturity Calculator RD Maturity Calculator Post Office Savings Calculator Sukanya Samriddhi Calculator Senior Citizen Savings Calculator National Savings Certificate Calculator Chit Fund Return Calculator Insurance Premium Calculator Term Insurance Calculator Life Insurance Calculator Health Insurance Premium Calculator Car Insurance Premium Calculator Two Wheeler Insurance Calculator ULIP Return Calculator Endowment Plan Calculator Pension Calculator Provident Fund Calculator Salary Hike Calculator Bonus Calculator Take Home Salary Calculator Cost of Living Calculator Net Income Calculator Gross to Net Salary Calculator Freelancer Income Calculator Investment Return Calculator Portfolio Return Calculator Asset Allocation Calculator Emergency Fund Calculator Wedding Budget Calculator Vacation Budget Calculator Car Affordability Calculator House Affordability Calculator Rent Affordability Calculator Student Loan Calculator Loan Refinance Calculator Balance Transfer Savings Calculator Debt to Income Ratio Calculator Net Profit Calculator Gross Profit Calculator Operating Margin Calculator Working Capital Calculator Current Ratio Calculator Quick Ratio Calculator Payback Period Calculator IRR Calculator NPV Calculator WACC Calculator EBITDA Calculator Depreciation Calculator Amortization Schedule Calculator Simple Loan Interest Calculator Flat vs Reducing Rate Calculator

Tax Calculators (100)

All tax calculators — click any link to open the calculator.

Income Tax Calculator Old vs New Tax Regime Calculator TDS Calculator GST Calculator GST Rate Calculator HRA Exemption Calculator Advance Tax Calculator Capital Gains Tax Calculator LTCG Tax Calculator STCG Tax Calculator Professional Tax Calculator Property Tax Calculator Road Tax Calculator Vehicle Tax Calculator Sales Tax Calculator VAT Calculator Service Tax Calculator Self Employment Tax Calculator Payroll Tax Calculator Salary Tax Calculator Freelance Tax Calculator Tax Saving Calculator Section 80C Deduction Calculator Section 80D Deduction Calculator Standard Deduction Calculator Tax Refund Calculator Tax Rebate Calculator TDS on Salary Calculator TDS on Rent Calculator TDS on Interest Calculator GST Input Tax Credit Calculator Reverse GST Calculator Customs Duty Calculator Import Duty Calculator Excise Duty Calculator Stamp Duty Calculator Wealth Tax Calculator Estate Tax Calculator Inheritance Tax Calculator Gift Tax Calculator Corporate Tax Calculator Partnership Firm Tax Calculator LLP Tax Calculator HUF Tax Calculator Senior Citizen Tax Calculator NRI Tax Calculator Tax on FD Interest Calculator Tax on Savings Interest Calculator Tax on Mutual Funds Calculator Tax on Stock Gains Calculator Dividend Tax Calculator Rental Income Tax Calculator House Property Tax Calculator Agricultural Income Tax Calculator Tax Liability Calculator Effective Tax Rate Calculator Marginal Tax Rate Calculator Tax Bracket Calculator Net Salary After Tax Calculator Gross Salary Tax Calculator Bonus Tax Calculator Leave Encashment Tax Calculator Gratuity Tax Calculator EPF Tax Calculator NPS Tax Benefit Calculator ELSS Tax Saving Calculator Life Insurance Tax Benefit Calculator Health Insurance Tax Benefit Calculator Home Loan Tax Benefit Calculator Education Loan Tax Benefit Calculator Tax on Crypto Gains Calculator Tax on Gold Calculator Tax on Property Sale Calculator Advance Tax Interest Calculator Late Filing Penalty Calculator TDS Refund Calculator GST Late Fee Calculator GST Composition Scheme Calculator Income From Other Sources Calculator Presumptive Tax Calculator 44AD Presumptive Tax Calculator 44ADA Tax Audit Applicability Calculator ITR Filing Tax Calculator Form 16 Tax Calculator Perquisite Tax Calculator Leave Travel Allowance Calculator Conveyance Allowance Tax Calculator Special Allowance Tax Calculator Tax on Pension Calculator Tax on Annuity Calculator Tax on Fixed Maturity Plan Calculator Tax on Debt Fund Calculator Tax on Equity Fund Calculator DTAA Tax Relief Calculator Foreign Income Tax Calculator TCS Calculator Tax on Bonus Shares Calculator Tax on ESOP Calculator Municipal Tax Calculator Water Tax Calculator

Health Calculators (100)

All health calculators — click any link to open the calculator.

BMI Calculator BMR Calculator Body Fat Percentage Calculator Calorie Calculator Ideal Weight Calculator Water Intake Calculator Pregnancy Due Date Calculator Ovulation Calculator Age Calculator Heart Rate Calculator Target Heart Rate Calculator Blood Pressure Calculator Blood Sugar Calculator A1C Calculator Waist to Hip Ratio Calculator Lean Body Mass Calculator TDEE Calculator Macro Calculator Protein Intake Calculator Carb Intake Calculator Fat Intake Calculator Body Surface Area Calculator Calories Burned Calculator Steps to Calories Calculator Running Pace Calculator Sweat Rate Calculator VO2 Max Calculator One Rep Max Calculator Bench Press Max Calculator Squat Max Calculator Deadlift Max Calculator Fitness Age Calculator Sleep Calculator Sleep Cycle Calculator Menstrual Cycle Calculator Conception Date Calculator Pregnancy Weight Gain Calculator Child Growth Percentile Calculator Infant Growth Calculator BMI for Kids Calculator Height Predictor Calculator Body Frame Size Calculator Cholesterol Ratio Calculator LDL Calculator HDL Calculator Triglycerides Calculator GFR Calculator Creatinine Clearance Calculator Kidney Function Calculator Liver Function Score Calculator Diabetes Risk Calculator Heart Disease Risk Calculator Stroke Risk Calculator Cancer Risk Calculator Life Expectancy Calculator Alcohol Unit Calculator BAC Calculator Nicotine Intake Calculator Caffeine Intake Calculator Water Loss Calculator Hydration Calculator Fasting Hours Calculator Intermittent Fasting Calculator Keto Macro Calculator Weight Loss Calculator Weight Gain Calculator Muscle Mass Calculator Protein Needs Calculator Fiber Intake Calculator Sugar Intake Calculator Sodium Intake Calculator Vitamin D Calculator Iron Intake Calculator Calcium Intake Calculator Pediatric Dose Calculator Medication Dosage Calculator IV Drip Rate Calculator Pain Scale Calculator Recovery Time Calculator Injury Risk Calculator Flexibility Score Calculator Posture Score Calculator Stress Level Calculator Mental Wellness Score Calculator Anxiety Score Calculator Mood Score Calculator Sleep Debt Calculator Jet Lag Calculator Fertility Window Calculator Gestational Age Calculator APGAR Score Calculator Body Age Calculator Metabolic Age Calculator Resting Metabolic Rate Calculator Basal Energy Expenditure Calculator Daily Water Needs Calculator Exercise Calorie Calculator Swimming Calorie Calculator Cycling Calorie Calculator Walking Calorie Calculator

Math Calculators (100)

All math calculators — click any link to open the calculator.

Percentage Calculator Average Calculator Ratio Calculator Proportion Calculator Fraction Calculator Decimal to Fraction Calculator LCM Calculator GCD Calculator Prime Number Checker Factorial Calculator Square Root Calculator Cube Root Calculator Exponent Calculator Logarithm Calculator Quadratic Equation Solver Linear Equation Solver Simultaneous Equation Solver Matrix Addition Calculator Determinant Calculator Standard Deviation Calculator Variance Calculator Mean Median Mode Calculator Permutation Calculator Combination Calculator Probability Calculator Circle Area Calculator Triangle Area Calculator Rectangle Area Calculator Square Area Calculator Trapezoid Area Calculator Sphere Volume Calculator Cylinder Volume Calculator Cone Volume Calculator Cube Volume Calculator Pythagorean Theorem Calculator Slope Calculator Distance Between Points Calculator Midpoint Calculator Angle Calculator Sine Calculator Cosine Calculator Tangent Calculator Binary to Decimal Calculator Decimal to Binary Calculator Hexadecimal Converter Calculator Octal Converter Calculator Roman Numeral Converter Scientific Notation Calculator Rounding Calculator Ratio Simplifier Calculator Arithmetic Sequence Calculator Geometric Sequence Calculator Fibonacci Sequence Calculator Modulo Calculator Absolute Value Calculator Polynomial Roots Calculator Derivative Calculator Integral Calculator Limit Calculator Matrix Multiplication Calculator Vector Magnitude Calculator Complex Number Calculator Number Base Converter Percentage Increase Calculator Percentage Decrease Calculator Percentage Change Calculator Percentage Difference Calculator Ratio to Percentage Calculator Fraction to Percentage Calculator Time Duration Calculator Age in Days Calculator Date Difference Calculator Time Zone Calculator Random Number Generator Number to Words Converter Words to Number Converter Prime Factorization Calculator HCF Calculator Surds Simplifier Calculator Algebra Equation Calculator Slope Intercept Form Calculator Ellipse Area Calculator Parabola Vertex Calculator Hyperbola Calculator Z Score Calculator Confidence Interval Calculator Sample Size Calculator Correlation Coefficient Calculator Linear Regression Calculator Weighted Average Calculator Grade Percentage Calculator GPA Calculator CGPA Calculator Percentage to CGPA Calculator Exam Marks Percentage Calculator Rectangle Perimeter Calculator Circle Circumference Calculator Triangle Perimeter Calculator Rhombus Area Calculator Parallelogram Area Calculator

Unit Converters (100)

All unit converters — click any link to open the calculator.

Length Converter Weight Converter Mass Converter Volume Converter Temperature Converter Speed Converter Time Converter Area Converter Pressure Converter Energy Converter Power Converter Force Converter Density Converter Data Storage Converter Fuel Consumption Converter Angle Converter Frequency Converter Torque Converter Currency Converter Meters to Feet Converter Feet to Meters Converter Kilometers to Miles Converter Miles to Kilometers Converter Kg to Pounds Converter Pounds to Kg Converter Celsius to Fahrenheit Converter Fahrenheit to Celsius Converter Celsius to Kelvin Converter Inches to Centimeters Converter Centimeters to Inches Converter Liters to Gallons Converter Gallons to Liters Converter Ounces to Grams Converter Grams to Ounces Converter Mph to Kmph Converter Kmph to Mph Converter Bytes to Megabytes Converter MB to GB Converter GB to TB Converter Acres to Square Feet Converter Square Feet to Square Meters Converter Square Meters to Square Feet Converter Hectares to Acres Converter Yards to Meters Converter Meters to Yards Converter Millimeters to Inches Converter Inches to Millimeters Converter Tons to Kg Converter Kg to Tons Converter Stone to Kg Converter Kg to Stone Converter Pascal to Bar Converter Bar to PSI Converter PSI to Pascal Converter Joules to Calories Converter Calories to Joules Converter Watts to Horsepower Converter Horsepower to Watts Converter Newton to Kg Force Converter Radians to Degrees Converter Degrees to Radians Converter Hertz to Kilohertz Converter Nautical Miles to Km Converter Knots to Mph Converter Cups to Milliliters Converter Milliliters to Cups Converter Tablespoons to Milliliters Converter Teaspoons to Milliliters Converter Pints to Liters Converter Quarts to Liters Converter Barrels to Liters Converter Cubic Feet to Cubic Meters Converter Cubic Meters to Cubic Feet Converter Square Yards to Square Meters Converter Light Year to Km Converter Astronomical Unit Converter Fluid Ounces to Milliliters Converter Grams to Kilograms Converter Kilograms to Grams Converter Milligrams to Grams Converter Micrograms to Milligrams Converter Decibel Converter USD to INR Converter EUR to USD Converter GBP to INR Converter World Time Zone Converter Seconds to Minutes Converter Minutes to Hours Converter Hours to Days Converter Days to Weeks Converter Weeks to Months Converter Months to Years Converter Roman Numerals to Number Converter Text Case Converter Word to Character Count Converter Shoe Size Converter Clothing Size Converter Ring Size Converter Paper Size Converter Data Transfer Rate Converter