All Calculators Directory

Calculate monthly mortgage payments, property taxes, insurance, PMI, extra payments, and full amortization schedules.

Calculate monthly car payments, total interest, sales tax, trade-in allowances, and full loan amortization schedules.

Estimate how much money you need to retire, required monthly savings, sustainable withdrawals, and drawdown timelines.

Calculate monthly loan payments, total interest, deferred lump sums, and bond present values with custom compounding frequencies.

Plan your personal budget, track 9 expense categories across 30+ line items, calculate your DTI ratio, and compare spending against benchmarks.

Calculate future investment value, total interest earned, Rule of 72 doubling time, and convert interest rates across compounding frequencies.

Convert currencies with live exchange rates, manual exchange rate overrides, and popular currency pair tables.

Calculate sales tax amounts, before-tax prices, and final prices with 50-state tax rate lookups.

Calculate monthly loan payments, total interest, or solve for payoff duration with extra payments.

Generate annual and monthly loan amortization schedules with extra prepayments and interest savings.

Project retirement nest egg growth, 2026 IRS contribution caps, employer matching, and 4% rule retirement income.

Calculate credit card payoff timelines, interest charges, and see the financial trap of paying only minimums.

Plan the payoff of multiple credit cards using Debt Avalanche and Debt Snowball rollover strategies.

Consolidate multiple debts (credit cards, auto, personal loans) into a unified avalanche or snowball payoff plan.

Calculate monthly student loan payments, standard vs graduated plans, and extra prepayment interest savings.

Calculate Front-End and Back-End DTI ratios and evaluate 28/36 mortgage underwriting benchmarks.

Calculate monthly personal loan payments, origination fee deductions, and solve for true effective APR.

Compare current and refinanced mortgages side-by-side to calculate monthly payment savings and breakeven horizons.

Compare 30-year total housing costs, equity accumulation, and the opportunity cost of investing market returns.

Estimate maximum home purchasing power based on household income, debts, down payment, and DTI limits.

Calculate required upfront cash, closing costs, and evaluate PMI impact across down payment tiers.

Convert wages between hourly, daily, weekly, bi-weekly, monthly, and annual amounts with PTO adjustments.

Estimate your due date, current gestational age, and trimester timeline using LMP, conception, IVF, or ultrasound methods.

Calculate daily calorie needs, BMR, and weight loss or gain targets using Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle formulas.

Calculate your Body Mass Index (BMI), BMI Prime, Ponderal Index, and healthy weight range for adults, teens, and children.

Calculate your Basal Metabolic Rate (BMR) using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle formulas, plus daily calorie needs by activity level.

Compare ideal body weight across Devine, Robinson, Miller, and Hamwi formulas alongside WHO Healthy BMI weight ranges.

Calculate body fat percentage, fat mass, and lean mass using the U.S. Navy Method and BMI Method.

Calculate weighted average grades and figure out the exact score needed on your final exam.

Calculate basic percentages (X% of Y, X is what % of Y, X is Y% of what), percentage difference, and percentage increase or decrease.

Calculate high school and college GPA with weighted and unweighted credits.

Add, subtract, multiply, divide, simplify fractions, convert decimals to fractions, and solve mixed numbers.

Calculate population and sample standard deviation, variance, mean, sum, count, and 95% confidence interval margin of error.

Calculate Mean, Median, Mode, Range, Geometric Mean, Harmonic Mean, and Weighted Average.

Perform high-precision scientific calculations, trigonometry, logarithms, exponents, factorials, and memory operations.

Calculate exact chronological age in years, months, days, hours, and seconds.

Calculate duration between dates or add/subtract time with US federal holiday and business-day support.

Convert time across world UTC time zones, calculate time differences, and handle day rollover instantly without daylight saving shifts.

Create live ticking countdown timers for events, holidays, weddings, and vacations with total hours, minutes, and seconds breakdowns.

Convert units across Length, Weight, Temperature, Area, Volume, Time, and Speed instantly.

Convert distance and length units instantly (inches, feet, meters, kilometers, miles).

Convert weight and mass units instantly (pounds, kilograms, grams, ounces, stones).

Convert temperature units instantly between Celsius (°C), Fahrenheit (°F), and Kelvin (K).

Convert area measurements instantly (square feet, meters, acres, hectares, square miles).

Convert fluid and 3D space volume units instantly (liters, gallons, cups, fluid ounces).

Convert velocity and speed units instantly (mph, km/h, m/s, knots).

Calculate your Life Path Number and Master Numbers (11, 22, 33) using authentic Pythagorean numerology.

Calculate your personal Angel Number by birth date or name, and decode repeating number sequences (111, 222, 333, 444, 555, 777, 888, 1111).

Calculate love compatibility percentage, element synergy, and relationship dynamics between any two zodiac signs.

Generate lucky numbers for US lotteries (Powerball, Mega Millions, Cash4Life, Pick 3/4/5) and personal birthday numerology.

Draw 3-card past-present-future tarot spreads, single daily guidance cards, and Yes/No tarot readings.

Roll virtual polyhedral dice (d4, d6, d8, d10, d12, d20) with cryptographically secure randomness.