All Calculators
One searchable list for every live calculator. Leave the search box empty to browse everything, or type a keyword to narrow it down.
Showing the full calculator library.
Age Calculator
Calculate exact age in years, months, and days from any birthdate.
Amortization Calculator
See your full loan amortization schedule with principal and interest breakdown by month.
APR Calculator
Calculate the true annual percentage rate on loans and credit cards including fees.
Area Calculator
Calculate area of circles, rectangles, triangles, and more shapes.
Attendance Calculator
Track your class attendance percentage and see how many absences you can still afford.
Auto Loan Calculator
Estimate your monthly auto loan payment with trade-in value and sales tax.
Average Calculator
Calculate mean, median, mode, range, and standard deviation for any dataset.
Binary Calculator
Convert between binary, decimal, octal, and hexadecimal. Perform binary arithmetic and bitwise operations.
Birthday Calculator
Find out your exact age, days until your next birthday, zodiac sign, and fun birthday facts.
BMI Calculator
Calculate your Body Mass Index and interpret your weight category.
BMR Calculator
Calculate your Basal Metabolic Rate to understand energy at rest.
Body Fat Calculator
Estimate your body fat percentage using measurements.
Calorie Calculator
Find out how many calories you need daily to reach your goals.
Calorie Deficit Calculator
Calculate your personalized calorie deficit target to lose weight safely.
Car Payment Calculator
Calculate your monthly car payment and total loan cost based on price, rate, and term.
Cash Out Refinance Calculator
Calculate how much cash you can take out when refinancing your home.
CD Calculator
Calculate the maturity value and interest earned on a certificate of deposit.
College GPA Calculator
Track and calculate cumulative college GPA across multiple semesters.
Compound Interest Calculator
See how your investments grow with the power of compound interest.
Currency Converter
Convert between 30 world currencies using approximate mid-market exchange rates.
Date Calculator
Add or subtract days from a date and find the difference between dates.
Date to Date Calculator
Calculate the exact number of days, weeks, months, and years between two dates.
Days Between Dates
Calculate the exact number of days between any two dates with hours, minutes, and a visual chart.
Discount Calculator
Calculate the final price after any discount percentage and optional tax.
Exponent Calculator
Calculate powers and exponents for any base and exponent value.
Federal Tax Calculator
Estimate your federal income tax based on income, filing status, and deductions.
Final Exam Calculator
Calculate the minimum score you need on your final exam to achieve your desired course grade.
Final Grade Calculator
Find out what score you need on your final exam to get your target grade.
Fraction Calculator
Add, subtract, multiply, and divide fractions instantly.
GCF Calculator
Find the greatest common factor of two or more numbers with prime factorization.
GPA Calculator
Calculate your GPA on a 4.0 scale from course grades and credits.
Grade Calculator
Calculate your weighted course grade from assignment scores.
Graphing Calculator
Plot and analyze mathematical functions on an interactive graph.
Heart Rate Calculator
Calculate target heart rate zones for exercise and fat burning.
HELOC Calculator
Calculate payments on a home equity line of credit during draw and repayment periods.
High Yield Savings Calculator
See how much your money grows in a high-yield savings account over time.
Home Affordability Calculator
Find out how much house you can afford based on your income and debts.
Home Equity Loan Calculator
Find out how much equity you can borrow against your home and estimate monthly payments.
Hourly to Salary Calculator
Convert your hourly wage to an equivalent annual salary.
Ideal Weight Calculator
Find your ideal body weight using multiple medical formulas.
Inflation Calculator
Calculate the inflation-adjusted value of money over time using historical CPI data.
Interest Calculator
Calculate simple and compound interest on any principal amount over time.
Investment Calculator
Project future value of investments with regular contributions and compound interest.
LCM Calculator
Calculate the least common multiple for any set of numbers.
Loan Calculator
Estimate monthly payments and total cost for any personal or auto loan.
Logarithm Calculator
Compute natural log, base-10 log, or any custom base logarithm.
Long Division Calculator
Solve long division problems step by step with quotient and remainder.
Macro Calculator
Calculate optimal daily protein, carb, and fat intake for your fitness goals.
Margin Calculator
Calculate profit margin, markup percentage, and selling price from cost.
Moon Phase Compatibility Calculator
Discover your cosmic connection by comparing moon phases between two dates.
Mortgage Calculator
Calculate your monthly mortgage payment, total interest, and amortization schedule.
One Rep Max Calculator
Estimate your maximum lift weight from submaximal training sets.
Overtime Calculator
Calculate overtime pay based on hours worked and pay rate with FLSA rules.
Ovulation Calculator
Predict your ovulation and fertile window.
Pace Calculator
Calculate running pace, speed, or finish time for any distance.
Paycheck Calculator
Estimate your take-home pay after federal, state, and local taxes.
Payment Calculator
Calculate monthly payments for any loan based on amount, rate, and term.
Percent Change Calculator
Calculate the percentage change between two values — increase or decrease.
Percentage Calculator
Calculate percentages, percent change, and percent of a number.
Percentage Increase Calculator
Calculate the percentage increase from one value to another.
Personal Loan Calculator
Calculate monthly payments and total interest for any personal loan amount and rate.
Pregnancy Due Date Calculator
Estimate your baby's due date from last period or conception.
Prime Factorization Calculator
Break down any number into its prime factors with step-by-step division.
Protein Calculator
Find out how much protein you need daily based on your goals.
Pythagorean Theorem Calculator
Solve for any side of a right triangle using the Pythagorean theorem.
Quadratic Formula Calculator
Solve quadratic equations using the quadratic formula.
Random Number Generator
Generate random numbers within any range instantly.
Ratio Calculator
Simplify ratios, solve proportions, and scale ratios step by step.
Refinance Calculator
Compare your current mortgage to a refinanced loan and see monthly savings.
Retirement Calculator
Estimate how much you need to retire comfortably.
ROI Calculator
Measure the return on investment for any project or asset over time.
Roman Numeral Converter
Convert between Roman numerals and Arabic numbers with symbol breakdown.
Roth IRA Calculator
Project your Roth IRA balance at retirement with tax-free growth estimates.
Salary Calculator
Convert between hourly, weekly, monthly, and annual salary figures.
Salary to Hourly Calculator
Convert your annual salary to an equivalent hourly wage.
Sales Tax Calculator
Quickly compute sales tax for any purchase amount and rate.
Savings Calculator
Plan your savings goals with deposit and interest projections over time.
Scientific Calculator
Full-featured scientific calculator for complex calculations.
Self-Employment Tax Calculator
Calculate SE tax and estimated quarterly payments for freelancers and contractors.
Sleep Calculator
Find the best times to sleep or wake up based on 90-minute sleep cycles.
Square Root Calculator
Find the square root or nth root of any number.
Standard Deviation Calculator
Compute standard deviation and variance for statistical data.
Student Loan Calculator
Calculate student loan payments and total repayment cost for any plan.
Study Time Calculator
Plan your study sessions with Pomodoro scheduling and a visual daily timeline.
Take-Home Pay Calculator
See your net pay after all deductions and withholdings.
Tax Calculator
Estimate your federal and state income tax liability for the current tax year.
TDEE Calculator
Total Daily Energy Expenditure based on activity level.
Test Grade Calculator
Convert your raw test score to a percentage and letter grade instantly with a visual gauge.
Time Calculator
Add, subtract, and convert hours, minutes, and seconds.
Time Card Calculator
Track work hours and calculate total pay for any pay period.
Time Clock Calculator
Calculate hours worked and daily pay from clock-in and clock-out times.
Time Duration Calculator
Calculate the duration between a start time and end time.
Time Zone Converter
Convert times between any world time zones and view a live world clock for 8 major cities.
Tip Calculator
Calculate tip amount and split the bill among any number of people.
Triangle Calculator
Solve triangles — find missing sides, angles, area, and perimeter.
Unit Converter
Convert between metric and imperial units for length, weight, temperature, volume, speed, area, time, and data.
Voltage Drop Calculator
Calculate voltage drop across a wire based on length, gauge, and current.
Volume Calculator
Find volume and surface area of 3D shapes including spheres, cylinders, and cubes.
Water Intake Calculator
Calculate your recommended daily water intake based on weight and activity.
Weighted Grade Calculator
Calculate your weighted course grade with a pie chart showing weight distribution.
Work Hours Calculator
Calculate total work hours and earnings across shifts and days.