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247 free calculators — no ads, no sign-up.
Math
49- Percentage Calculator Calculate percentages, increases, and differences.
- Scientific Calculator Trig, logs, powers, and more.
- Fraction Calculator Add, subtract, multiply, and divide fractions.
- Average Calculator Mean, median, and mode of any dataset.
- Standard Deviation Population and sample standard deviation.
- Ratio Calculator Simplify and solve ratio problems.
- Percentage Increase Find the percentage increase between two values.
- Percentage Decrease Find the percentage decrease between two values.
- Exponent Calculator Compute powers and exponents instantly.
- Log Calculator Logarithms in any base.
- Prime Number Calculator Check if a number is prime.
- GCF Calculator Greatest common factor of two or more numbers.
- LCM Calculator Least common multiple of two or more numbers.
- Probability Calculator P(A), P(B), P(A or B), and complements.
- Mean Median Mode Calculator Mean, median, mode, range, and std dev.
- Percent Error Calculator Experimental vs theoretical value error.
- Quadratic Equation Calculator Solve ax² + bx + c = 0 instantly.
- Triangle Calculator Area, perimeter, and angles from any 3 values.
- Matrix Calculator Add, multiply, determinant, inverse, transpose.
- Permutation Calculator nPr — arrangements where order matters.
- Combination Calculator nCr — selections where order does not matter.
- Z-Score Calculator Standard score and percentile from normal distribution.
- Random Number Generator Single numbers, sets, or dice rolls.
- Sequence Calculator Find nth term and sum of any sequence.
- Arithmetic Sequence Calculator nth term, common difference, and sum of arithmetic series.
- Geometric Sequence Calculator nth term, common ratio, and sum of geometric series.
- Binomial Calculator Binomial probability and distribution.
- Vector Calculator Add, subtract, dot product, cross product, and magnitude.
- Scientific Notation Calculator Convert between standard and scientific notation.
- Binary Calculator Add, subtract, multiply, divide binary numbers.
- Hex Calculator Hexadecimal arithmetic and base conversions.
- Decimal to Fraction Calculator Convert any decimal to its simplest fraction form.
- Fraction to Decimal Calculator Convert any fraction to its decimal equivalent.
- Half-Life Calculator Radioactive decay and half-life calculations.
- Slope Calculator Slope, distance, angle, and midpoint from two points.
- Sample Size Calculator Required sample size for statistical surveys.
- Confidence Interval Calculator Confidence intervals for means and proportions.
- Distance Calculator Distance between two points in 2D or 3D.
- Circle Calculator Area, circumference, diameter from any one value.
- Surface Area Calculator Surface area of sphere, cylinder, cone, cube.
- Pythagorean Theorem Calculator Find any side of a right triangle.
- Root Calculator Square root, cube root, and nth root.
- Factor Calculator All factors and prime factorization.
- Rounding Calculator Round to decimal places or significant figures.
- P-Value Calculator P-value from z-score or t-statistic.
- Statistics Calculator Full descriptive statistics from a dataset.
- Long Division Calculator Step-by-step long division with remainder shown.
- Fibonacci Calculator nth Fibonacci term, sequence, and golden ratio.
- Number Base Converter Convert between binary, octal, decimal, hex, and any base.
Finance
77- Mortgage Calculator Estimate monthly home loan payments.
- Compound Interest See how investments grow over time.
- Tip Calculator Split the bill and calculate tips.
- EMI Calculator Equated monthly instalment for any loan.
- SIP Calculator Returns on systematic investment plans.
- GST Calculator Add or remove GST from any amount.
- Simple Interest Interest on principal without compounding.
- CAGR Calculator Compound annual growth rate over any period.
- ROI Calculator Return on investment as a percentage.
- Crypto Profit Calculator Calculate cryptocurrency investment gains, ROI, and fees.
- FD Calculator Fixed deposit maturity amount and interest.
- RD Calculator Recurring deposit returns over time.
- Savings Calculator Project your savings growth with interest.
- Retirement Calculator How much you need to retire comfortably.
- Inflation Calculator Real value of money adjusted for inflation.
- Loan Calculator Monthly payments and total cost of any loan.
- Personal Loan Calculator EMI and interest for personal loans.
- Car Loan Calculator Monthly payments for auto financing.
- Home Loan Calculator EMI breakdown for home loans.
- Credit Card Calculator Payoff time and interest on your balance.
- Investment Calculator Future value with contributions and returns.
- Tax Calculator US federal income tax and effective rate.
- Salary Calculator Convert hourly, monthly, and annual salary.
- Budget Calculator Monthly income vs expenses breakdown.
- Debt Payoff Calculator Avalanche and snowball payoff strategies.
- Debt Consolidation Calculator Compare current debts vs a consolidation loan.
- APR Calculator True annual cost of borrowing including fees.
- APY Calculator Annual yield with any compounding frequency.
- Margin Calculator Gross margin, markup, and selling price.
- Auto Loan Calculator Monthly payments and total cost for any auto loan.
- Payment Calculator Monthly payment for any loan amount and term.
- Amortization Calculator Full amortization schedule for any loan.
- Interest Rate Calculator Find the interest rate from loan terms.
- House Affordability Calculator How much house you can afford based on income.
- Rent Calculator Estimate how much rent you can afford.
- Student Loan Calculator Monthly payments and payoff time for student loans.
- College Cost Calculator Estimate total cost of college over 4 years.
- Refinance Calculator Compare current vs refinanced loan savings.
- Lease Calculator Monthly lease payment for any vehicle or asset.
- Mortgage Payoff Calculator Pay off your mortgage faster with extra payments.
- 401K Calculator Project your 401(k) balance at retirement.
- Pension Calculator Estimate monthly pension benefit from service years.
- Social Security Calculator Estimate monthly Social Security benefit.
- Annuity Calculator Future value of a series of equal payments.
- Annuity Payout Calculator Monthly payout from a lump sum annuity.
- CD Calculator Certificate of deposit maturity value and interest.
- Bond Calculator Bond price, yield to maturity, and coupon payments.
- Mutual Fund Calculator Project mutual fund growth with contributions.
- Roth IRA Calculator Tax-free Roth IRA growth projection.
- IRA Calculator Traditional IRA growth and withdrawal taxes.
- RMD Calculator Required Minimum Distribution from retirement accounts.
- VAT Calculator Add or remove VAT from any price.
- Depreciation Calculator Asset depreciation using straight-line or declining balance.
- Average Return Calculator Average annual return (CAGR) on an investment.
- Business Loan Calculator Monthly payments for a business loan.
- Debt-to-Income Ratio Calculator Your DTI ratio for mortgage and loan approval.
- Real Estate Calculator Cap rate, cash flow, and ROI for rental property.
- Take-Home Pay Calculator Net paycheck after federal taxes and deductions.
- Boat Loan Calculator Monthly payments for a boat loan.
- Rental Property Calculator Rental yield, cash flow, and cap rate.
- IRR Calculator Internal Rate of Return on a series of cash flows.
- FHA Loan Calculator FHA mortgage payment with MIP included.
- VA Mortgage Calculator VA loan payment with funding fee, no PMI.
- Home Equity Loan Calculator Monthly payment on a home equity loan.
- HELOC Calculator Home equity line of credit available amount.
- Down Payment Calculator Time to save for a home down payment.
- Rent vs Buy Calculator Compare long-term cost of renting vs buying.
- Payback Period Calculator Time to recoup an investment.
- Present Value Calculator Present value of a future sum of money.
- Future Value Calculator Future value of a present investment.
- Commission Calculator Sales commission earnings by rate and volume.
- Finance Calculator Time value of money: PV, FV, rate, nper, pmt.
- Net Worth Calculator Total assets minus liabilities — your financial snapshot.
- Emergency Fund Calculator How much to save and how long it will take.
- Break-Even Calculator Units and revenue needed to cover all costs.
- Life Insurance Calculator How much life insurance coverage you need.
- Freelance Rate Calculator Minimum hourly and daily rate for your income goal.
Health
37- BMI Calculator Check your Body Mass Index.
- Calorie Calculator Estimate your daily calorie needs.
- BMR Calculator Basal metabolic rate — calories at rest.
- TDEE Calculator Total daily energy expenditure.
- Body Fat Calculator Estimate body fat percentage.
- Ideal Weight Calculator Healthy weight range for your height.
- Lean Body Mass Muscle and bone mass minus body fat.
- Water Intake Calculator Daily water needs based on weight and activity.
- Macro Calculator Protein, carbs, and fat targets for your goals.
- Heart Rate Calculator Target heart rate zones for exercise.
- Pregnancy Calculator Due date and week-by-week tracking.
- Ovulation Calculator Fertile window based on your cycle.
- Protein Calculator Daily protein target by goal and activity.
- Sleep Calculator Best bedtime and wake-up times by sleep cycle.
- Waist-to-Hip Ratio Cardiovascular health risk assessment.
- One Rep Max Calculator 1RM estimate and training percentages.
- Pace Calculator Running pace, speed, and finish time.
- Healthy Weight Calculator Healthy weight range by height and formula.
- Body Surface Area Calculator BSA using Mosteller, DuBois, Haycock, Boyd.
- Due Date Calculator Pregnancy due date from LMP or conception date.
- Calories Burned Calculator Calories burned for 25+ activities using MET.
- Target Heart Rate Calculator Heart rate zones for exercise training.
- Fat Intake Calculator Daily fat intake target based on your goals.
- Carb Intake Calculator Daily carbohydrate intake for your diet.
- VO2 Max Calculator Estimate your maximal oxygen uptake.
- Army Body Fat Calculator US Army body fat percentage using tape method.
- Pregnancy Weight Gain Calculator Recommended weight gain during pregnancy by BMI.
- BAC Calculator Blood alcohol content based on drinks and weight.
- Body Type Calculator Find your somatotype — ectomorph, mesomorph, endomorph.
- Hydration Calculator Daily water needs based on activity and climate.
- Running Pace Calculator Pace, speed, and finish time for any distance.
- Cycling Calories Calculator Calories burned cycling by speed, weight, and duration.
- Period Calculator Track menstrual cycle and predict next period.
- GFR Calculator Estimated GFR for kidney function assessment.
- Conception Calculator Likely conception date from due date or LMP.
- Overweight Calculator Weight to lose to reach a healthy BMI.
- Calorie Deficit Calculator Daily calorie target and deficit to reach your goal weight.
Everyday
49- Age Calculator Find your exact age in years, months, days.
- GPA Calculator Calculate your semester or cumulative GPA.
- Date Difference Calculator Days, weeks, months between two dates.
- Time Duration Calculator Add durations or find time between two times.
- Discount Calculator Final price and savings after discount.
- Fuel Cost Calculator Trip fuel cost by distance and efficiency.
- Password Generator Strong random passwords with custom rules.
- Date Calculator Add or subtract days, months, years from any date.
- Business Days Calculator Count working days between two dates.
- Countdown Calculator Days, hours, minutes until any future date.
- Birthday Calculator Age, next birthday, and day of the week you were born.
- Work Hours Calculator Total hours worked from start/end times.
- Time Zone Calculator Convert time between major world time zones.
- Grade Calculator Weighted grade average from assignments and exams.
- Unit Price Calculator Compare cost per unit to find the best deal.
- Bill Splitter Calculator Split any bill evenly or by percentage among friends.
- Cost Per Use Calculator True cost of any item based on how often you use it.
- Height Calculator Predict adult height from parents heights.
- Concrete Calculator Cubic yards of concrete for slabs and columns.
- IP Subnet Calculator Network address, usable hosts, and subnet mask.
- Dice Roller Roll any number of dice: d4, d6, d8, d10, d12, d20.
- Voltage Drop Calculator Voltage drop and wire gauge for electrical circuits.
- BTU Calculator BTU needed to heat or cool a room.
- Square Footage Calculator Area of rooms and spaces in various shapes.
- Time Card Calculator Total hours worked and pay from a weekly time card.
- Horsepower Calculator Engine HP from torque and RPM.
- Stair Calculator Rise, run, angle, and stringer length for stairs.
- Ohms Law Calculator Voltage, current, resistance, and power from any two.
- Electricity Calculator Monthly electricity cost for any appliance.
- Shoe Size Conversion Convert shoe sizes between US, UK, EU, and CM.
- Molarity Calculator Molarity, moles, and volume for chemistry solutions.
- Molecular Weight Calculator Molecular weight from a chemical formula.
- Roman Numeral Converter Convert integers to and from Roman numerals.
- Roofing Calculator Roofing squares needed for any roof size and pitch.
- Tile Calculator Number of tiles for any floor or wall area.
- Mulch Calculator Cubic yards of mulch needed for any area and depth.
- Gravel Calculator Cubic yards of gravel for any project.
- Wind Chill Calculator Feels-like temperature from wind speed and air temp.
- Carbon Footprint Calculator Estimate your annual CO₂ emissions.
- Heat Index Calculator Feels-like temperature from heat and humidity.
- Dew Point Calculator Dew point from temperature and humidity.
- Bandwidth Calculator Data transfer time from file size and connection speed.
- Day of Week Calculator What day of the week any date falls on.
- GDP Calculator GDP from C + I + G + net exports.
- Golf Handicap Calculator Golf handicap index from recent scores.
- Tire Size Calculator Tire diameter and sidewall from tire code.
- Base64 Encode / Decode Encode or decode text with Base64.
- URL Encode / Decode Percent-encode or decode URL strings.
- Mileage Calculator Gas mileage (MPG) from miles driven and gallons used.
Conversions
25- Length Converter mm, cm, m, km, inches, feet, miles, and more.
- Weight Converter mg, g, kg, lbs, oz, stone, tonnes, and more.
- Temperature Converter Celsius, Fahrenheit, Kelvin, Rankine.
- Area Converter m², km², hectares, acres, ft², and more.
- Volume Converter ml, L, cups, pints, gallons, and more.
- Speed Converter m/s, km/h, mph, knots, Mach, and more.
- Time Converter ms, seconds, minutes, hours, days, years, and more.
- Currency Converter 15 major currencies with editable rates.
- Data Storage Converter Bits, bytes, KB, MB, GB, TB, PB.
- Energy Converter J, kJ, cal, kcal, kWh, BTU, and more.
- Pressure Converter Pa, bar, PSI, atm, mmHg, and more.
- Power Converter W, kW, MW, horsepower, BTU/hr, and more.
- Force Converter N, kN, lbf, kgf, dyne, and more.
- Angle Converter Degrees, radians, gradians, arcminutes, and more.
- Fuel Economy Converter MPG (US/UK), L/100km, km/L, and more.
- Density Converter kg/m³, g/cm³, lb/ft³, lb/in³, and more.
- Torque Converter Nm, lb·ft, lb·in, kg·m, and more.
- Frequency Converter Hz, kHz, MHz, GHz, rpm, and more.
- Voltage Converter V, mV, kV, MV, and more.
- Current Converter A, mA, µA, kA, and more.
- Resistance Converter Ω, mΩ, kΩ, MΩ, GΩ, and more.
- Flow Rate Converter L/s, m³/h, GPM, CFM, and more.
- Illuminance Converter Lux, foot-candle, phot, and more.
- Acceleration Converter m/s², g, ft/s², Gal, and more.
- Cooking Converter Cups, tbsp, tsp, ml, oz, grams and more.
Gaming
10- Valorant eDPI Calculator Calculate your effective DPI and compare with pros.
- Valorant DPI Calculator Find the right DPI for your target eDPI and sensitivity.
- Valorant Sensitivity Converter Convert sens from CS2, Apex, Overwatch 2, and more.
- Valorant cm/360 Calculator How far you move your mouse for a full 360° turn.
- Valorant Scoped Sens Calculator Find your perfect ADS / scoped sensitivity multiplier.
- CS2 Sensitivity Converter Convert your CS2 sensitivity to any other game.
- Apex Sensitivity Converter Convert Apex Legends sensitivity to and from other games.
- Fortnite Sensitivity Converter Convert Fortnite sensitivity to and from other games.
- Overwatch Sensitivity Converter Convert Overwatch 2 sensitivity to and from other games.
- FOV Calculator Convert FOV between games and find your ideal field of view.