Tools
Browse every EZ Calculators tool by category. Choose a category to focus the list, or keep All Tools selected.
All Tools
Every calculator in one organized, scannable library.
FinanceMortgage CalculatorEstimate a monthly mortgage payment with principal, interest, taxes, insurance, PMI, and HOA costs.FinanceLoan CalculatorCalculate monthly loan payments, total repayment, and total interest from amount, APR, and term.FinanceCar Loan CalculatorEstimate a car payment after down payment, trade-in, sales tax, fees, APR, and loan term.FinancePersonal Loan CalculatorEstimate personal loan payments and interest with amount, APR, and term in months.FinanceBusiness Loan CalculatorEstimate business loan payments, fees, total repayment, and total borrowing cost.FinanceHome Equity Loan CalculatorEstimate available home equity and payment on a requested home equity loan.FinanceCompound Interest CalculatorCalculate compound growth with starting amount, recurring deposits, rate, time, and compounding frequency.FinanceInvestment CalculatorEstimate future investment value from starting balance, monthly contribution, return, and time.FinanceSavings CalculatorEstimate savings balance over time or compare progress toward a savings goal.FinanceRetirement CalculatorEstimate retirement savings at retirement age and a simple sustainable annual income target.FinanceAnnuity CalculatorEstimate the future value of regular annuity payments using rate, term, and payment frequency.FinanceCredit Card Payoff CalculatorEstimate how long it will take to pay off a credit card and how much interest you may pay.FinanceDebt Payoff CalculatorEstimate payoff time and interest for a debt balance with fixed monthly payments.FinanceAmortization CalculatorGenerate a loan payment estimate and the first-year principal and interest breakdown.FinanceMortgage Extra Payment CalculatorEstimate how extra monthly mortgage payments can reduce payoff time and interest.BusinessVAT CalculatorAdd VAT to a net amount or remove VAT from a gross amount.BusinessMargin CalculatorCalculate profit and margin from cost and selling price.BusinessMarkup CalculatorCalculate selling price, profit, and margin from cost and markup percentage.BusinessProfit CalculatorCalculate gross profit, net profit, and margin from revenue, cost, and expenses.BusinessTip CalculatorCalculate a tip, bill total, and split amount per person.BusinessYouTube Revenue CalculatorEstimate creator revenue from views and RPM assumptions.BusinessSalary To Hourly CalculatorConvert annual salary into hourly, weekly, biweekly, monthly, and daily pay.BusinessHourly To Salary CalculatorConvert hourly pay into annual, monthly, weekly, and daily earnings.MathPercentage CalculatorSolve common percentage calculations including percent of, increase, and decrease.MathFraction CalculatorAdd, subtract, multiply, divide, and simplify fractions.MathDecimal To Fraction CalculatorConvert a decimal value into a simplified fraction.MathRatio CalculatorSimplify ratios and see equivalent ratio values.MathProportion CalculatorSolve a proportion in the form a / b = c / x.MathLCM CalculatorFind the least common multiple for two or more whole numbers.MathGCF CalculatorFind the greatest common factor for two or more whole numbers.MathSlope CalculatorCalculate slope from two points and see the slope-intercept form when possible.MathQuadratic Formula CalculatorSolve quadratic equations in ax^2 + bx + c = 0 form.MathFactoring CalculatorFactor a whole number into prime factors.MathScientific CalculatorCalculate trigonometry, logarithms, powers, roots, factorials, percentages, and scientific notation in DEG or RAD mode.StudentsGPA CalculatorCalculate GPA from grades and credit hours.HealthBMI CalculatorCalculate body mass index using metric or imperial units and see the general category.HealthTDEE CalculatorEstimate total daily energy expenditure from BMR and activity level.HealthBMR CalculatorEstimate basal metabolic rate using age, sex, height, and weight.HealthCalorie Deficit CalculatorEstimate daily calorie targets from TDEE and desired weekly weight change.HealthIdeal Weight CalculatorEstimate a general ideal weight range from height and sex.Date & TimeAge CalculatorCalculate exact age, days lived, next birthday, weekday born, and age milestones.Date & TimeAge Difference CalculatorCompare two dates with exact gap, total days, weeks, weekdays, and birth-order context.Date & TimeDate CalculatorAdd or subtract dates and see weekday, ISO week, day-of-year, and business-day context.Date & TimeDays Between Dates CalculatorCount exact calendar gap, weekdays, weekend days, hours, weeks, months, and years between dates.Date & TimeNext Birthday CalculatorFind the next birthday countdown, weekday, turning age, current age, and half-birthday date.Date & TimeSchool Age CalculatorEstimate school age, cutoff-day age, grade range, kindergarten age check, and planning school year.Date & TimeLife Stats CalculatorEstimate days lived, seconds lived, sleep, awake time, heartbeats, breaths, weekends, and life milestones.Date & TimeZodiac Sign CalculatorFind the Western zodiac sign, date range, element, modality, ruler, and birthday details.Date & TimeBusiness Days CalculatorCount weekdays, weekends, holidays excluded, business weeks, and next business day between dates.Date & TimeWork Hours CalculatorCalculate shift hours, weekly hours, monthly hours, overtime, and estimated pay from work times.ConvertersUnit ConverterConvert common length, weight, temperature, area, volume, speed, time, and data units.ConvertersNumbers to Words ConverterConvert whole numbers, decimals, currency amounts, checks, ordinals, and scientific notation into English words.ConvertersVolume CalculatorCalculate volume for boxes, cubes, cylinders, cones, and spheres.ConvertersSteps To Miles CalculatorConvert steps into miles and kilometers using your step length.ConvertersSquare Footage CalculatorCalculate rectangular area in square feet and square meters, compare repeated spaces, and review material allowances.ConvertersFuel Cost CalculatorEstimate one-way or round-trip fuel cost, fuel needed, cost sharing, and efficiency conversions.StudentsGrade CalculatorCalculate a weighted course grade, remaining-work scenarios, or the final exam score needed for a target.EverydayLove CalculatorCreate a playful compatibility story from two names and dates of birth for entertainment only.Date & TimeHours CalculatorCalculate elapsed hours between start and end times with break time and repeat days.EverydayDice RollerRoll virtual dice with custom sides, dice count, and modifiers.ConvertersSpeed CalculatorCalculate speed from distance and time, then convert to mph, km/h, m/s, and pace.ConvertersMass CalculatorConvert mass between metric, avoirdupois, imperial, jewelry, and industrial units with a complete equivalence table.HealthSleep CalculatorPlan a bedtime, wake-up time, or sleep window with age-based duration guidance and optional 90-minute cycle estimates.ConvertersShoe Size Conversion CalculatorConvert approximate adult shoe sizes between US, UK, EU, and centimeters.EverydayRandom Number GeneratorGenerate random integers or high-precision decimals in a selected range with optional unique results.MathBinary CalculatorAdd, subtract, multiply, or divide binary numbers and see decimal and hex results.HealthPregnancy CalculatorEstimate due date, gestational age, conception window, trimester, and pregnancy milestones.HealthMacro CalculatorEstimate daily calories and macro grams for protein, carbs, and fat from body stats and goals.HealthProtein CalculatorEstimate daily protein needs from body weight, goal, and activity level.FinanceAPR CalculatorEstimate APR from loan amount, interest rate, lender fees, and term.FinanceBudget CalculatorBuild a monthly budget with income, expenses, savings rate, and 50/30/20 style checks.FinanceIRR CalculatorCalculate internal rate of return from a series of investment cash flows.FinanceIRA CalculatorProject traditional IRA growth from current balance, annual contributions, return, and time.BusinessDiscount CalculatorCalculate sale price, savings, tax, and final cost after a discount.FinanceBond CalculatorEstimate bond price, coupon income, current yield, and yield-to-maturity context.FinanceRoth IRA CalculatorProject Roth IRA growth from after-tax contributions and estimated return.FinanceIncome Tax CalculatorEstimate 2026 U.S. federal income tax by filing status or use transparent custom rates for another location.BusinessSalary CalculatorConvert pay by period into annual, monthly, weekly, daily, and hourly equivalents.FinanceInterest Rate CalculatorSolve the implied loan interest rate from payment, principal, and term.FinanceHouse Affordability CalculatorEstimate affordable home price from income, debt, down payment, rate, term, and housing costs.FinanceRent CalculatorCheck rent affordability, rent-to-income ratio, annual rent, and projected rent increases.FinanceAnnuity Payout CalculatorEstimate fixed annuity payout from balance, interest rate, payout years, and payment frequency.FinancePension CalculatorEstimate pension income from final salary, service years, multiplier, and retirement age.FinanceRefinance CalculatorCompare current loan and refinance terms, monthly savings, closing costs, and break-even time.FinanceAuto Lease CalculatorEstimate monthly auto lease payment from price, residual value, money factor, term, fees, and tax.TextWord CounterCount words, characters, sentences, paragraphs, lines, reading time, speaking time, unique words, and frequent terms as you type.TextCharacter CounterCount visible characters, characters without whitespace, code points, bytes, letters, numbers, emoji, and remaining text-limit space live.