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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, annual interest rate, and term.FinanceCar Loan CalculatorEstimate a car payment with taxes, fees, trade-in equity, rebate, interest rate, and loan term.FinancePersonal Loan CalculatorAudit a fixed-rate personal loan offer by comparing payment, usable proceeds, origination-fee treatment, total borrowing cost, and optional faster payoff.FinanceBusiness Loan CalculatorEstimate fixed-rate business term loan payments, usable proceeds, fees, interest-only costs, cash-flow coverage, and payoff timing.FinanceHome Equity Loan CalculatorEstimate a fixed-rate home equity loan payment, borrowing capacity, CLTV, closing costs, proceeds, and payoff schedule.FinanceCompound Interest CalculatorProject compound growth with recurring deposits, contribution increases, fees, inflation, a target check, and a yearly balance table.FinanceInvestment CalculatorProject an investment goal with regular contributions, fees, inflation, return scenarios, and the estimated cost of waiting.FinanceSavings CalculatorPlan a savings goal with APY, monthly deposits, account fees, deposit timing, and a year-by-year progress table.FinanceRetirement CalculatorConnect retirement contributions, inflation-adjusted spending, outside income, fees, and portfolio drawdown in one age-based plan.FinanceAnnuity CalculatorProject the accumulation value of a regular-payment annuity with payment timing, compounding, fees, inflation, and a funding target.FinanceCredit Card Payoff CalculatorEstimate credit card payoff time, interest, fees, promotional APR changes, recurring charges, target payments, and a complete monthly balance schedule.FinanceDebt Payoff CalculatorCompare avalanche, snowball, and custom-order payoff plans for up to three debts, including payment rollover, extra money, a lump sum, target timing, and a complete monthly schedule.FinanceAmortization CalculatorBuild a complete fixed-rate loan amortization schedule, measure principal and interest milestones, model recurring and one-time extra principal, and solve the payment needed for a target payoff term.FinanceMortgage Extra Payment CalculatorCompare timed extra-principal strategies, payoff acceleration, interest savings, and year-by-year mortgage balances.BusinessVAT CalculatorAdd or extract VAT after a discount, taxable additions, non-taxable charges, and an alternative-rate comparison.BusinessMargin CalculatorModel profit margin after discounts, variable costs, selling fees, fixed costs, and sales volume.BusinessMarkup CalculatorBuild a selling price from complete unit cost, markup, selling fees, discount, volume, and practical price rounding.BusinessProfit CalculatorBuild a period profit-and-loss estimate with revenue adjustments, cost layers, margins, break-even sales, and target-profit planning.BusinessTip CalculatorCalculate a restaurant or service tip with discounts, tax, service charges, fees, equal bill splitting, and optional payment rounding.BusinessYouTube Revenue CalculatorEstimate YouTube and wider creator revenue with RPM or watch-page CPM scenarios, monetized playbacks, additional income, expenses, run rates, and target views.BusinessSalary To Hourly CalculatorConvert annual salary into scheduled and effective hourly pay with bonus, benefits, paid leave, actual workload, pay-period averages, and target-rate comparisons.BusinessHourly To Salary CalculatorConvert hourly wages into regular pay, overtime, annual cash, benefits, pay-period averages, time-off adjustments, and a target-salary comparison.MathPercentage CalculatorSolve nine percentage problems with mode-aware inputs, adjustable precision, formulas, checks, and comparison tables.MathFraction CalculatorCalculate, compare, simplify, and convert fractions or mixed numbers with exact steps.MathDecimal To Fraction CalculatorConvert terminating or parenthesized repeating decimals into exact simplified fractions with mixed-number form, reduction evidence, and notation checks.MathRatio CalculatorSimplify exact two-part or multi-part ratios, inspect shares and equivalent forms, distribute a total, or scale one part without rounding the entered relationship.MathProportion CalculatorSolve or verify any missing term in equivalent ratios, direct proportion, or inverse proportion with exact fraction and decimal input, constants, scale factors, and independent checks.MathLCM CalculatorFind the exact least common multiple of signed integers with prime-power evidence, divisibility checks, cycle multipliers, and boundary-case guidance.MathGCF CalculatorFind the exact greatest common factor of signed integers with common factors, prime-power evidence, grouping checks, and coprime analysis.MathSlope CalculatorAnalyze a straight line from two points, a point and slope, slope-intercept form, or standard form with exact equations, intercepts, angle, and geometry.MathQuadratic Formula CalculatorSolve exact quadratic equations with rational, irrational, repeated, or complex roots, then audit the discriminant, vertex, graph features, and root checks.MathFactoring CalculatorFind prime factors and integer properties, or factor an integer-coefficient quadratic when exact binomial factors exist.MathScientific CalculatorEvaluate scientific expressions with DEG/RAD trigonometry, logs, roots, powers, percentages, memory, history, and adjustable notation.StudentsGPA CalculatorCalculate term and projected cumulative GPA from named courses, grades, credits, prior GPA, and a future target plan.HealthBMI CalculatorCalculate adult BMI, category, height-specific weight boundaries, BMI Prime, ponderal index, and optional waist-to-height context.HealthTDEE CalculatorModel adult total daily energy expenditure from Mifflin-St Jeor resting energy and a visible activity-multiplier scenario.HealthBMR CalculatorEstimate adult resting energy with Mifflin-St Jeor, compare revised Harris-Benedict, and audit every formula component.HealthCalorie Deficit CalculatorCompare an entered maintenance estimate with planned intake, a daily energy gap, or a static weekly-change shorthand without presenting the arithmetic as a weight forecast.HealthIdeal Weight CalculatorCompare four historical adult ideal-body-weight formulas with an exact BMI screening interval and a BMI-linked Peterson estimate, without presenting any result as a personal target.Date & TimeAge CalculatorCalculate exact calendar age, completed years, total days, birthdays, and age milestones with an explicit leap-day convention.Date & TimeAge Difference CalculatorCompare two birth dates with an exact calendar gap, total days and weeks, current ages on one shared date, birth order, and next-birthday timing.Date & TimeDate CalculatorAdd or subtract one calendar unit or a combined years-months-weeks-days interval with clear month-end rules, stage-by-stage arithmetic, and detailed calendar context.Date & TimeDays Between Dates CalculatorMeasure the exact civil-calendar interval between two dates, compare elapsed and inclusive counts, and inspect weekdays, weekends, milestones, and calendar context.Date & TimeNext Birthday CalculatorCount calendar days to the next birthday and review the date, weekday, age turning, exact current age, half-birthday, and upcoming birthday timeline.Date & TimeSchool Age CalculatorCheck a child's exact age against a school or program's entered minimum-age and cutoff-date rule.Date & TimeLife Stats CalculatorCalculate calendar days lived, exact age, 24-hour equivalents, birthdays, day milestones, and transparent sleep, heartbeat, and breathing scenarios.Date & TimeZodiac Sign CalculatorLook up a conventional Western tropical sun sign, date range, boundary distance, element, modality, polarity, rulers, and related signs from a birth date.Date & TimeBusiness Days CalculatorCount working days between two dates with configurable endpoints, workweeks, exact closure dates, period totals, and surrounding business dates.Date & TimeWork Hours CalculatorBuild a repeated-shift estimate or seven-day timesheet with unpaid breaks, overnight shifts, overtime assumptions, and gross pay projections.ConvertersUnit ConverterConvert length, mass, temperature, area, volume, speed, time, and decimal or binary data units with transparent factors and precision.ConvertersNumbers to Words ConverterConvert whole numbers, decimals, currency amounts, checks, ordinals, and scientific notation into English words.ConvertersVolume CalculatorCalculate and compare geometric volume, capacity, surface area, occupied volume, and unit conversions for ten common solids.ConvertersSteps To Miles CalculatorConvert a step count into miles and kilometers with a measured step length, known-distance calibration, or clearly labeled height estimate.ConvertersSquare Footage CalculatorCalculate net project area for six common shapes, then compare unit conversions, deductions, material allowance, package coverage, and cost.ConvertersFuel Cost CalculatorEstimate fuel, cost, unit equivalents, repeat trips, route allowance, shared cost, and real-world fuel-use scenarios.StudentsGrade CalculatorCalculate weighted grades, points-based totals, remaining-work targets, and the final exam score needed for a course goal.EverydayLove CalculatorCreate a repeatable, entertainment-only match story from two names and birth dates without presenting the result as relationship advice.Date & TimeHours CalculatorCalculate one clock interval with an explicit day boundary, break deduction, repeated totals, decimal hours, minutes, seconds, and an auditable duration ledger.EverydayDice RollerRoll D4, D6, D8, D10, D12, D20, D100, or custom dice with modifiers, keep rules, success counts, probability context, and roll history.ConvertersSpeed CalculatorSolve average speed, distance, or travel time with independent units, pace conversions, reverse checks, and constant-rate benchmark projections.ConvertersMass CalculatorConvert mass across metric, avoirdupois, troy, jewelry, and industrial units with exact factors, precision control, reverse checks, and a complete equivalence table.HealthSleep CalculatorPlan time in bed from a wake time or bedtime, or audit an overnight window with age-based duration context and an optional 80-100 minute cycle model.ConvertersShoe Size Conversion CalculatorMatch an adult shoe label or measured foot length to listed US, UK, EU, and Mondopoint references from two published manufacturer charts.EverydayRandom Number GeneratorGenerate secure random integers or fixed-precision decimals across very large inclusive ranges, with unique sampling, sorting, repeatable seeds, and a complete result ledger.MathBinary CalculatorCalculate exact binary arithmetic, bitwise logic, shifts, and fixed-width signed or unsigned results with overflow checks and base conversions.HealthPregnancy CalculatorEstimate due date, gestational age, trimester, term dates, and pregnancy milestones from LMP, a known due date, conception, ultrasound dating, or IVF transfer.HealthMacro CalculatorBuild an adult macro planning scenario from estimated or custom calories, then compare protein, carbohydrate, fat, fiber, and per-meal values.HealthProtein CalculatorCompare adult protein reference ranges from body weight, then review daily grams, an even meal split, calorie contribution, and current-intake context.FinanceAPR CalculatorEstimate nominal APR for a fixed, equal-monthly-payment loan from the note rate or an entered payment. Separate points, APR-included charges, excluded costs, and fee treatment; then audit amount financed, finance charge, total payments, APR spread, and checkpoint cost.FinanceBudget CalculatorBuild a monthly cash-flow plan with normalized take-home income, needs, wants, debt and saving priorities, irregular-bill reserves, emergency-fund runway, and a 50/20/30 reference check.FinanceIRR CalculatorAnalyze equal-period cash flows with IRR, annualized IRR, NPV, MIRR, payback, cash multiple, and multiple-root checks.FinanceIRA CalculatorProject a traditional IRA from the current balance to retirement with monthly contributions, fees, inflation, taxes, and scenario comparisons.BusinessDiscount CalculatorCalculate a checkout total, find percent off, or recover an original price with sequential discounts, a fixed coupon, tax, shipping, and fees.FinanceBond CalculatorPrice a fixed-rate bond from yield or solve yield from a clean market quote, then audit accrued interest, cash flows, call risk, duration, convexity, DV01, costs, tax context, inflation, and yield sensitivity.FinanceRoth IRA CalculatorProject Roth IRA growth with monthly contributions, fees, inflation, and a separate 2026 direct-contribution estimate.FinanceIncome Tax CalculatorEstimate 2026 U.S. federal ordinary income tax, compare deductions, inspect every bracket, and reconcile entered credits and payments.BusinessSalary CalculatorConvert one gross pay rate into annual and paycheck equivalents, reconcile variable cash and entered deductions, estimate take-home pay, value employer benefits, and test a base-pay raise.FinanceInterest Rate CalculatorReverse-engineer a fixed loan rate from principal, payment, and term, or solve the matching payment, principal, or payoff count. Audit periodic and effective rates, balloon debt, upfront-cost context, amortization, checkpoints, and exact rate sensitivity without confusing note rate with disclosed APR.FinanceHouse Affordability CalculatorBuild a home-price planning ceiling from verified gross income, existing debt, a complete ownership budget, down payment, mortgage terms, taxes, insurance, HOA dues, maintenance, utilities, closing cash, reserves, and controlled stress scenarios without presenting the result as loan approval.FinanceRent CalculatorTest a rental against gross-income screening, take-home cash flow, complete monthly housing costs, lease concessions, move-in cash, reserves, renewal increases, and controlled income or expense stress scenarios while keeping landlord qualification separate from household comfort and written lease terms.FinanceAnnuity Payout CalculatorModel a fixed-period payout from an entered balance or test how long a chosen payment may last. Compare effective return after percentage fees, payment timing, annual increases, inflation, a user-defined taxable share, a target ending balance, and a lower-return stress scenario without presenting the result as an insurer's lifetime annuity quote.FinancePension CalculatorEstimate a formula-based employer defined-benefit pension while keeping every assumption visible. Enter final-average pay directly or project current pensionable pay, apply credited-service limits and quoted retirement-option reductions, then inspect gross and after-tax income, survivor continuation, COLA purchasing power, present value, and an optional lump-sum comparison.FinanceRefinance CalculatorCompare a current fixed-rate mortgage with one refinance offer. Rebuild P&I, mortgage insurance, points, lender credits, other closing costs, payoff charges, cash out, financed costs, property equity, break-even timing, holding-period balances, interest, and payoff term so a lower payment is never mistaken for automatic savings.FinanceAuto Lease CalculatorReconstruct a closed-end vehicle lease from MSRP, negotiated value, trade equity or payoff shortfall, capitalized items, cash and rebates, residual, money factor or disclosed rent charge, term, fees, tax treatment, signing cash, mileage, return charges, operating budget, and an optional end-value estimate.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.
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