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Finance, health, math, currency, construction calculators & unit converters
The only calculator you'll ever need. 84+ calculators and converters across 5 categories. 💰 FINANCIAL CALCULATORS - Tip Calculator — split bills & custom tip percentages - Currency Converter — 150+ currencies with live exchange rates - Discount Calculator — sale price & savings percentage - Savings Calculator — compound interest & goal planning - Budget Calculator — 50/30/20 rule & expense tracking - Debt Payoff Calculator — snowball & avalanche strategies - Net Worth Calculator - Paycheck Calculator — salary, taxes & take-home pay - Car Lease Calculator — monthly lease payment estimator - Car Affordability Calculator - Home Affordability Calculator — mortgage pre-qualification - Down Payment Calculator — savings timeline for home purchase - Refinance Calculator — break-even & monthly savings - ROI Calculator — return on investment percentage - Rental Property Calculator — cash flow & cap rate - Profit Margin Calculator — gross, operating & net margin - Tax Refund Estimator - Stock Profit Calculator — buy/sell gain & loss tracker - Crypto Calculator — live prices for Bitcoin, Ethereum & 18 coins 💪 FITNESS & HEALTH CALCULATORS - TDEE Calculator — total daily energy expenditure - Macro Calculator — protein, carbs & fat targets - Calorie Burn Calculator - Water Intake Calculator — daily hydration goal - Heart Rate Zone Calculator — fat burn, cardio & peak zones - One Rep Max Calculator — 1RM strength estimator - BAC Calculator — blood alcohol content estimator - Waist to Hip Ratio Calculator — body composition assessment - Sleep Calculator — optimal bedtime & wake time - Ovulation Calculator — fertility window tracker - Period Calculator — menstrual cycle predictor 📐 MATH CALCULATORS - Scientific Calculator - Algebra Solver — linear equation solver - Graphing Calculator - Matrix Calculator — determinant, transpose & multiply - Ratio Calculator — solve proportions A:B = C:D - Area & Volume Calculator — 10+ geometric shapes - LCM & GCF Calculator — least common multiple & greatest common factor - Number Base Converter — binary, octal, decimal & hexadecimal - Quadratic Formula Calculator - Statistics Calculator — mean, median, mode & standard deviation - Permutation & Combination Calculator — nPr and nCr 🔧 EVERYDAY & UTILITY CALCULATORS - Length Converter — inches, feet, meters, km, miles & more - Weight Converter — pounds, kg, ounces, grams, stones - Volume Converter — gallons, liters, cups, tablespoons - Temperature Converter — Celsius, Fahrenheit & Kelvin - Area Converter — sq ft, sq meters, acres, hectares - Speed Converter — mph, km/h, knots, m/s - Age Calculator — exact age, days alive & next birthday - Date Calculator — date difference & add/subtract days - Time Calculator — add & subtract hours, minutes, seconds - Hours Calculator — decimal hours to H:M:S converter - Grade Calculator — GPA calculator & letter grade tracker - Fuel Cost Calculator — MPG, trip cost & fuel efficiency - Countdown Calculator — days until any event - Work Hours Calculator — timesheet, overtime & pay tracker - Unit Price Comparator — find the best deal per unit - Time Zone Converter — world clock & zone conversion - Roman Numeral Converter — integer to Roman & back - IP Address Calculator — subnet mask & network calculator 🏗️ CONSTRUCTION CALCULATORS - Paint Calculator — gallons needed for any room - Tile Calculator — tiles needed with waste factor - Flooring Calculator — carpet & hardwood estimator - Roofing Calculator — shingles, squares & pitch factor - Mulch Calculator — cubic yards & bags needed - Gravel Calculator — tonnage & cubic yard estimator - Drywall Calculator — sheets & screws needed - Fence Calculator — panels, posts & rails estimator - Deck Calculator — lumber, boards & joists - Paver Calculator — pavers needed with gap spacing - Wallpaper Calculator — rolls needed with pattern repeat - Brick Calculator — bricks & mortar bags needed - Square Footage Calculator — room-by-room total area