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225+ free online calculators organized by category. Find the perfect tool for your calculation needs.

Financial Calculators

75 calculators

1Mortgage Calculator2Mortgage Calculator UK3Canadian Mortgage Calculator4Mortgage Amortization Calculator5Mortgage Payoff Calculator6House Affordability Calculator7Down Payment Calculator8Rent vs. Buy Calculator9Rent Calculator10Real Estate Calculator11Refinance Calculator12FHA Loan Calculator13VA Mortgage Calculator14Home Equity Loan Calculator15HELOC Calculator16Loan Calculator17Auto Loan Calculator18Boat Loan Calculator19Student Loan Calculator20Personal Loan Calculator21Business Loan Calculator22Payment Calculator23Repayment Calculator24Interest Calculator25Simple Interest Calculator26Compound Interest Calculator27Interest Rate Calculator28APR Calculator29Investment Calculator30ROI Calculator31IRR Calculator32Future Value Calculator33Present Value Calculator34Payback Period Calculator35Average Return Calculator36Retirement Calculator37401K Calculator38Roth IRA Calculator39IRA Calculator40RMD Calculator41Pension Calculator42Social Security Calculator43Annuity Calculator44Annuity Payout Calculator45Savings Calculator46CD Calculator47Bond Calculator48Mutual Fund Calculator49Credit Card Calculator50Credit Cards Payoff Calculator51Debt Payoff Calculator52Debt Consolidation Calculator53Debt-to-Income Ratio Calculator54Budget Calculator55Rental Property Calculator56Salary Calculator57Take-Home-Paycheck Calculator58Income Tax Calculator59Marriage Tax Calculator60Estate Tax Calculator61Sales Tax Calculator62VAT Calculator63Commission Calculator64Discount Calculator65Percent Off Calculator66Margin Calculator67Inflation Calculator68Currency Calculator69Finance Calculator70Depreciation Calculator71Amortization Calculator72Auto Lease Calculator73Lease Calculator74Cash Back or Low Interest Calculator75College Cost Calculator

Health & Fitness Calculators

32 calculators

76BMI Calculator77Anorexic BMI Calculator78Overweight Calculator79Body Fat Calculator80Army Body Fat Calculator81BMR Calculator82TDEE Calculator83Calorie Calculator84Calories Burned Calculator85Macro Calculator86Protein Calculator87Carbohydrate Calculator88Fat Intake Calculator89Ideal Weight Calculator90Healthy Weight Calculator91Lean Body Mass Calculator92Body Type Calculator93Body Surface Area Calculator94One Rep Max Calculator95Target Heart Rate Calculator96Pace Calculator97Pregnancy Calculator98Due Date Calculator99Pregnancy Weight Gain Calculator100Pregnancy Conception Calculator101Ovulation Calculator102Conception Calculator103Period Calculator104GFR Calculator105BAC Calculator106Sleep Calculator107Weight Watcher Points Calculator

Math Calculators

44 calculators

108Scientific Calculator109Basic Calculator110Percentage Calculator111Fraction Calculator112Ratio Calculator113Exponent Calculator114Root Calculator115Log Calculator116Quadratic Formula Calculator117Standard Deviation Calculator118Statistics Calculator119Mean, Median, Mode, Range Calculator120Probability Calculator121Z-score Calculator122Confidence Interval Calculator123Sample Size Calculator124P-value Calculator125Permutation and Combination Calculator126Triangle Calculator127Right Triangle Calculator128Pythagorean Theorem Calculator129Circle Calculator130Area Calculator131Volume Calculator132Surface Area Calculator133Distance Calculator134Slope Calculator135Binary Calculator136Hex Calculator137Number Sequence Calculator138Random Number Generator139Factor Calculator140Greatest Common Factor Calculator141Least Common Multiple Calculator142Common Factor Calculator143Prime Factorization Calculator144Rounding Calculator145Scientific Notation Calculator146Big Number Calculator147Matrix Calculator148Average Calculator149Percent Error Calculator150Half-Life Calculator151Long Division Calculator

Other Calculators

51 calculators

152Age Calculator153Time Calculator154Hours Calculator155Time Card Calculator156Time Duration Calculator157Time Zone Calculator158Day Counter159Day of the Week Calculator160GPA Calculator161Grade Calculator162Password Generator163Dice Roller164Love Calculator165Tip Calculator166Conversion Calculator167Fuel Cost Calculator168Gas Mileage Calculator169Mileage Calculator170Speed Calculator171Horsepower Calculator172Engine Horsepower Calculator173Tire Size Calculator174Square Footage Calculator175Concrete Calculator176Roofing Calculator177Tile Calculator178Mulch Calculator179Gravel Calculator180Stair Calculator181BTU Calculator182Voltage Drop Calculator183Ohms Law Calculator184Electricity Calculator185Resistor Calculator186IP Subnet Calculator187Bandwidth Calculator188Base64 Encode / Decode189URL Encode / Decode190Wind Chill Calculator191Heat Index Calculator192Dew Point Calculator193Bra Size Calculator194Shoe Size Conversion195Golf Handicap Calculator196Density Calculator197Mass Calculator198Weight Calculator199Molarity Calculator200Molecular Weight Calculator201Roman Numeral Converter202GDP Calculator