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½ Fraction Calculator Fractions Add, subtract, multiply, divide, simplify, compare, and convert fractions fast. sin Scientific Calculator General Calculator-style keypad with trig, logs, powers, roots, memory, Ans, and Deg or Rad. % Percentage Calculator Arithmetic Percent of a number, what percent one number is of another, and increase or decrease. △ Triangle Calculator Geometry Use common triangle inputs to find sides, angles, area, and perimeter. ◻ Volume Calculator Geometry Cube, cuboid, cylinder, cone, and sphere volume tool. σ Standard Deviation Calculator Statistics Paste a number list and choose sample or population standard deviation. 🎲 Random Number Generator General Create unique or duplicate-friendly random numbers instantly. ↗ Number Sequence Calculator General Find likely pattern rules and next values from a sequence. ± Percent Error Calculator Arithmetic Compare measured and accepted values to get percent error. xⁿ Exponent Calculator Algebra Enter a base and exponent to evaluate powers. 01 Binary Calculator Number Systems Binary to decimal, decimal to binary, or binary expression solving. 16 Hex Calculator Number Systems Hex to decimal, decimal to hex, or arithmetic with hexadecimal values. ½t Half-Life Calculator Science Initial amount, half-life, elapsed time, and remaining amount. ax² Quadratic Formula Calculator Algebra Find real or complex roots from ax² + bx + c = 0. m Slope Calculator Algebra Use two coordinate points to calculate slope and line form. log Log Calculator Algebra Find log values with custom bases. ▭ Area Calculator Geometry Rectangle, triangle, circle, and trapezoid area tool. n Sample Size Calculator Statistics Use confidence level, margin of error, and population proportion. P Probability Calculator Statistics Basic favorable-over-total, independent events, or complement probability. Σx Statistics Calculator Statistics Mean, median, mode, range, variance, standard deviation, and more. x̄ Mean, Median, Mode, Range Calculator Statistics Quick descriptive stats from a number list. nCr Permutation and Combination Calculator Statistics Choose nPr or nCr and enter n and r. z Z-score Calculator Statistics Use value, mean, and standard deviation. CI Confidence Interval Calculator Statistics Use sample mean, standard deviation, sample size, and confidence level. a:b Ratio Calculator Arithmetic Simplify a ratio, solve an equivalent ratio, or split an amount. d Distance Calculator Geometry 2D coordinate distance or travel distance from speed and time. ◯ Circle Calculator Geometry Use radius, diameter, circumference, or area to find the rest. SA Surface Area Calculator Geometry Cube, cuboid, cylinder, cone, and sphere surface area. a²+b² Pythagorean Theorem Calculator Geometry Use two known sides to solve for the third. ⊿ Right Triangle Calculator Geometry Use two sides or a side and an angle to solve a right triangle. ⁿ√x Root Calculator Algebra Compute square roots, cube roots, or any n-th root. LCM Least Common Multiple Calculator Number Theory Paste or type a list of integers to get the LCM. GCF Greatest Common Factor Calculator Number Theory Enter a list of integers to get the GCF. × Factor Calculator Number Theory Find all positive and negative factors of a number. ≈ Rounding Calculator Arithmetic Choose a rounding rule and precision. [] Matrix Calculator Algebra Add, subtract, multiply, determinant, or inverse for matrices. ×10ⁿ Scientific Notation Calculator General Scientific notation conversion in both directions. ∞ Big Number Calculator General A simple expression box for big integer or large-value calculations. p Prime Factorization Calculator Number Theory Prime factor tree style final result for integers. CF Common Factor Calculator Number Theory Enter several integers and get all common factors. 🧮 Basic Calculator General Calculator-style input for quick arithmetic. ÷ Long Division Calculator Arithmetic Enter dividend and divisor and get a long-division style answer. avg Average Calculator Arithmetic Quick average from comma or line-separated values. p P-value Calculator Statistics Use z, t, or chi-square style inputs and tail selection.

BMI BMI Calculator Health and Fitness Metric and imperial BMI input with clear height and weight fields. 🔥 Calorie Calculator Health and Fitness Metric or imperial body details with daily calorie targets for maintenance, fat loss, or gain. BF Body Fat Calculator Health and Fitness Body fat estimate using waist, neck, height, and hip when needed. BMR BMR Calculator Health and Fitness Metric or imperial BMR estimate using age, sex, height, and weight. 🥗 Macro Calculator Health and Fitness Metric or imperial input for calorie and macro targets. ⚖️ Ideal Weight Calculator Health and Fitness Metric or imperial ideal-weight estimate with child and adult handling that changes by age and sex. 🤰 Pregnancy Calculator Health and Fitness Pregnancy progress calculator from last period or due date. 📈 Pregnancy Weight Gain Calculator Health and Fitness Metric or imperial pregnancy weight-gain guidance from prepregnancy size and current week. 🍼 Pregnancy Conception Calculator Health and Fitness Find the likely conception date with common pregnancy dates. 📅 Due Date Calculator Health and Fitness Due date estimate with common pregnancy starting points. 🏃 Pace Calculator Health and Fitness Pace, speed, distance, and total time in one place. 🪖 Army Body Fat Calculator Health and Fitness Army tape-test estimate with age, body weight, and abdomen size. 🍞 Carbohydrate Calculator Health and Fitness Metric or imperial carbohydrate target from your body details, activity, and goal. LBM Lean Body Mass Calculator Health and Fitness Lean body mass result with a simple body fat input. ❤️ Healthy Weight Calculator Health and Fitness Healthy weight range based on body size and BMI range. 🏋️ Calories Burned Calculator Health and Fitness Metric or imperial calories-burned estimate from body weight, MET value, and time. 1RM One Rep Max Calculator Health and Fitness One-rep max estimate from a recent set. 💓 Target Heart Rate Calculator Health and Fitness Target heart rate range from age and workout intensity. 🥩 Protein Calculator Health and Fitness Daily protein target in grams. 🥑 Fat Intake Calculator Health and Fitness Suggested daily fat grams from calorie intake. TDEE TDEE Calculator Health and Fitness Metric or imperial TDEE estimate from age, sex, height, weight, and activity. 🌸 Ovulation Calculator Health and Fitness Cycle-based fertile window estimate. 🌱 Conception Calculator Health and Fitness Likely conception date estimate. 🩸 Period Calculator Health and Fitness Next period estimate using your usual cycle. 🧪 GFR Calculator Health and Fitness Kidney function estimate using common clinical inputs. 🧍 Body Type Calculator Health and Fitness Waist, shoulder, chest, and hip measurement comparison. BSA Body Surface Area Calculator Health and Fitness Metric or imperial body surface area using height and weight. 🍷 BAC Calculator Health and Fitness Rough BAC estimate using common drink inputs. ⚠️ Anorexic BMI Calculator Health and Fitness BMI result with underweight warning language. WW Weight Watcher Points Calculator Health and Fitness Food points estimate from calories and key nutrients. 📉 Overweight Calculator Health and Fitness BMI-based overweight check with target range.

🏠 Mortgage Calculator Finance Home loan payment with taxes, insurance, and amortization. 💳 Loan Calculator Finance Loan payment, payoff summary, and schedule. 🚗 Auto Loan Calculator Finance Vehicle loan payment with tax, fees, and payoff summary. % Interest Calculator Finance Simple or compound interest in one calculator. PMT Payment Calculator Finance Periodic payment calculator. 🌅 Retirement Calculator Finance Retirement balance projection with inflation-adjusted value. 📉 Amortization Calculator Finance Loan payment, payoff summary, and schedule. 📈 Investment Calculator Finance Investment growth with compounding. 💱 Currency Calculator Finance Currency conversion with optional custom rate. 🛒 Inflation Calculator Finance Inflation growth or buying-power adjustment. FV Finance Calculator Finance Future value, present value, payment, and term solver. 🧾 Mortgage Payoff Calculator Finance Mortgage payoff date, savings, and faster-payoff estimate. IRS Income Tax Calculator Finance Federal income tax estimate with current brackets and standard deduction. 🧮 Compound Interest Calculator Finance Compound interest growth with contributions. 💼 Salary Calculator Finance Hourly, weekly, monthly, and annual pay conversion. 401K 401K Calculator Finance 401(k) projection with contributions and match. APR Interest Rate Calculator Finance Interest-rate solver for amortizing payments. 🧾 Sales Tax Calculator Finance Sales tax added or stripped from price. 🏡 House Affordability Calculator Finance Home affordability estimate using income and debt ratios. 🐷 Savings Calculator Finance Savings balance projection. 🏢 Rent Calculator Finance Monthly and yearly rent cost with optional cost-to-income ratio. 💍 Marriage Tax Calculator Finance Marriage bonus or penalty estimate using U.S. federal tax rules. 🏛️ Estate Tax Calculator Finance Federal estate tax estimate with current exclusion. 🪙 Pension Calculator Finance Pension payout estimate using a standard pension formula. SSA Social Security Calculator Finance Social Security estimate using bend points and claim-age adjustments. 🔁 Annuity Calculator Finance Future annuity value from payment, rate, and time. 💸 Annuity Payout Calculator Finance Periodic payout from balance, rate, and term. 💳 Credit Card Calculator Finance Credit-card payoff estimate from balance, APR, and payment. 🧷 Credit Cards Payoff Calculator Finance Combined credit-card payoff estimate. 📌 Debt Payoff Calculator Finance Debt payoff time, total paid, and interest. 🪢 Debt Consolidation Calculator Finance Debt consolidation comparison. ⏳ Repayment Calculator Finance Repayment time from balance, rate, and payment. 🎓 Student Loan Calculator Finance Loan payment, payoff summary, and schedule. 🏫 College Cost Calculator Finance Projected college cost by the time school begins. SI Simple Interest Calculator Finance Simple interest over time. CD CD Calculator Finance CD maturity value and interest earned. 🏦 Bond Calculator Finance Bond coupon, current yield, and approximate YTM. 🧺 Mutual Fund Calculator Finance Mutual fund growth with fees. Roth Roth IRA Calculator Finance Roth IRA future value. IRA IRA Calculator Finance IRA future value projection. RMD RMD Calculator Finance RMD estimate using the IRS Uniform Lifetime Table. VAT VAT Calculator Finance VAT added or removed from the entered amount. 🎁 Cash Back or Low Interest Calculator Finance Cash-back versus promo-rate comparison. 🚘 Auto Lease Calculator Finance Auto-lease payment estimate. 📉 Depreciation Calculator Finance Depreciation by method and elapsed time. AVG Average Return Calculator Finance Average return and compound annual growth rate. 🛍️ Margin Calculator Finance Margin and markup calculator. 🏷️ Discount Calculator Finance Discount amount and final price. 🏢 Business Loan Calculator Finance Loan payment, payoff summary, and schedule. DTI Debt-to-Income Ratio Calculator Finance Monthly DTI ratio and affordability signal. 🏗️ Real Estate Calculator Finance Real-estate investment snapshot. 💵 Take-Home-Paycheck Calculator Finance Paycheck estimate after federal tax, Social Security, and Medicare. 🤝 Personal Loan Calculator Finance Loan payment, payoff summary, and schedule. 🚤 Boat Loan Calculator Finance Loan payment, payoff summary, and schedule. 📄 Lease Calculator Finance General lease payment estimate. 🔄 Refinance Calculator Finance Refinance savings and break-even estimate. 📊 Budget Calculator Finance Simple monthly budget summary. 🏘️ Rental Property Calculator Finance Rental-property cash-flow calculator. IRR IRR Calculator Finance IRR from cash-flow stream. ROI ROI Calculator Finance ROI percentage and profit amount. APR APR Calculator Finance APR estimate from loan cash flows. FHA FHA Loan Calculator Finance FHA payment with UFMIP and annual MIP. VA VA Mortgage Calculator Finance VA mortgage payment with funding fee. HEL Home Equity Loan Calculator Finance Loan payment, payoff summary, and schedule. HELOC HELOC Calculator Finance HELOC draw and repayment estimate. ⬇️ Down Payment Calculator Finance Down payment amount and LTV. ⚖️ Rent vs. Buy Calculator Finance Rent-versus-buy comparison over time. ⏱️ Payback Period Calculator Finance Payback period estimate. PV Present Value Calculator Finance Present value from future value, rate, and time. FV Future Value Calculator Finance Future value with compounding. 💼 Commission Calculator Finance Commission value and total sale amount. 🇬🇧 Mortgage Calculator UK Finance UK mortgage payment and loan amount. 🇨🇦 Canadian Mortgage Calculator Finance Canadian mortgage payment with monthly or biweekly schedule. 📅 Mortgage Amortization Calculator Finance Mortgage amortization summary. 🛍️ Percent Off Calculator Finance Percent-off sale price and savings.

🎂 Age Calculator Everyday Find years, months, days, and total days between two dates. 📅 Date Calculator Everyday Date arithmetic and date difference in one place. ⏰ Time Calculator Everyday Time arithmetic for daily planning. 🕒 Hours Calculator Everyday Shift length calculator with break deduction. 🎓 GPA Calculator Education Letter grade GPA on a 4.0 scale. 📝 Grade Calculator Education Required final exam grade calculator. 📏 Height Calculator Conversion Quick height unit conversion. 🧱 Concrete Calculator Construction Concrete volume in cubic feet, cubic yards, and cubic meters. 🌐 IP Subnet Calculator Networking Network, broadcast, mask, range, and host count. 👚 Bra Size Calculator Sizing Approximate band size and cup size. 🔐 Password Generator Utilities Strong password generator with multiple options. 🎲 Dice Roller Fun Dice results and total in one click. ⇄ Conversion Calculator Conversion Meters, kilometers, feet, inches, miles, and centimeters. ⛽ Fuel Cost Calculator Travel Trip fuel use and estimated cost. ⚡ Voltage Drop Calculator Electrical Voltage drop and remaining voltage. 🌡️ BTU Calculator HVAC Simple room BTU estimator. ⬛ Square Footage Calculator Construction Area calculator for floors, rooms, and walls. 🗂️ Time Card Calculator Work Time card total for one work shift. 🌍 Time Zone Calculator Time Time zone conversion with local date and time. ❤️ Love Calculator Fun Fun name-based love percentage. 💹 GDP Calculator Economics GDP per capita estimator. 🚗 Gas Mileage Calculator Travel MPG and km/L in one result. 🏎️ Horsepower Calculator Automotive Engine horsepower from torque and RPM. 🔧 Engine Horsepower Calculator Automotive kW and HP conversion for engines and motors. 🪜 Stair Calculator Construction Stair rise and run planner. 🟫 Resistor Calculator Electrical Equivalent resistance from a list of resistor values. Ω Ohms Law Calculator Electrical Find the missing V, I, or R value. 🔌 Electricity Calculator Electrical Watts, kilowatt-hours, and cost estimate. 👟 Shoe Size Conversion Sizing Simple shoe size conversion. 💵 Tip Calculator Everyday Tip and bill split calculator. 🛣️ Mileage Calculator Travel Trip mileage and cost overview. 🧪 Density Calculator Science Density = mass divided by volume. ⚖️ Mass Calculator Science Mass = density multiplied by volume. 🏋️ Weight Calculator Science Weight = mass × gravity. 💨 Speed Calculator Physics Average speed in common units. 🧫 Molarity Calculator Chemistry Molarity in mol/L. ⚛️ Molecular Weight Calculator Chemistry Chemical formula molar mass calculator. Ⅻ Roman Numeral Converter Conversion Roman numeral conversion both ways. ⛳ Golf Handicap Calculator Sports Simple handicap index estimate. 😴 Sleep Calculator Health Sleep time and sleep cycle helper. 🛞 Tire Size Calculator Automotive Tire dimensions from width, aspect ratio, and rim size. 🏠 Roofing Calculator Construction Roof area and material estimate. 🟦 Tile Calculator Construction Tile count with waste allowance. 🌿 Mulch Calculator Garden Mulch amount in cubic feet and cubic yards. 🪨 Gravel Calculator Construction Gravel in cubic yards and estimated tons. 🥶 Wind Chill Calculator Weather Feels-like temperature in cold wind. 🥵 Heat Index Calculator Weather Feels-like temperature in hot weather. 💧 Dew Point Calculator Weather Dew point estimator. 📡 Bandwidth Calculator Networking Bandwidth and transfer time estimate. 🔤 Base64 Encode / Decode Utilities Base64 conversion both ways. 🔗 URL Encode / Decode Utilities URL component conversion both ways. ⏳ Time Duration Calculator Time Difference in days, hours, minutes, and seconds. 📆 Day Counter Time Day difference between dates. 🗓️ Day of the Week Calculator Time Weekday finder for any calendar date. VIN Auto Year Calculator Other VIN year lookup using the 10th character with common 1981+ VIN rules.