All Calculators
BMI Calculator
Calculate your Body Mass Index and understand your weight status
Calorie Deficit Calculator
Calculate your daily calorie needs for weight loss with personalized TDEE and timeline predictions
Mortgage Calculator
Calculate your monthly mortgage payments, including property tax and insurance
Personal Loan Calculator
Estimate monthly payments and total costs for personal loans
Auto Loan Calculator
Calculate car loan payments including trade-in value and sales tax
Investment Returns Calculator
Calculate compound interest growth with regular contributions over time
Sales Tax Calculator
Calculate sales tax rates, before-tax and after-tax prices for your purchases
Tip Calculator
Calculate tips and split bills easily with friends and family
Hourly to Salary Calculator
Convert your hourly wage to an equivalent annual salary and compare
GPA Calculator
Calculate your Grade Point Average based on course credits and grades
Date Calculator
Calculate the duration between two dates in years, months, and days
Word Counter & Reading Time
Count words, characters, and estimate reading time for your text
Pregnancy Due Date Calculator
Estimate your baby's due date and current gestational age based on your last menstrual period
Credit Card Payoff Calculator
Calculate the fastest way to pay off credit card debt using snowball or avalanche methods.
529 to Roth IRA Transfer Calculator
Check SECURE 2.0 eligibility and annual rollover limits for moving 529 funds into a Roth IRA
Financial Health Score
Comprehensive 0-1000 financial wellness assessment covering spending, saving, debt, and planning with personalized action plans
Color Converter
Convert colors between HEX, RGB, HSL, CMYK formats and discover beautiful color palettes using color theory
Age Calculator
Calculate your exact age in years, months, days, hours, and seconds with fun facts and milestones
Percentage Calculator
Calculate percentages, discounts, tips, tax, percentage change, and percentage of numbers with step-by-step explanations
Retirement Calculator
Advanced retirement calculator with Monte Carlo simulation to plan your financial future
Student Loan Calculator
Compare federal IDR plans, refinancing options, and forgiveness programs to optimize student loan repayment
Compound Interest Calculator
Calculate compound interest growth with regular contributions, multiple compounding frequencies, and a year-by-year breakdown
Rent vs Buy Calculator
Compare the long-term financial outcome of renting versus buying a home with break-even analysis and wealth projections
Inflation Calculator
Calculate how inflation affects purchasing power using real US CPI data from 1913-2025 or a custom rate
Take-Home Pay Calculator
Calculate your net paycheck after federal taxes, state taxes, Social Security, Medicare, and pre-tax deductions
Net Worth Calculator
Track your total assets and liabilities to calculate net worth and compare to U.S. medians by age group
TDEE Calculator
Calculate your Total Daily Energy Expenditure, BMR, calorie targets, and macronutrient breakdown
Unit Converter
Convert between units of length, weight, temperature, volume, area, speed, digital storage, and time instantly
Time Zone Converter
Convert times between world time zones, compare business hours, and plan meetings across zones with DST support
Macro Calculator
Calculate your daily protein, carbs, and fat targets with per-meal breakdowns for any fitness goal
Fuel Cost Calculator
Estimate trip fuel costs, compare vehicles side by side, and calculate annual commute expenses with CO2 estimates
Grade Calculator
Calculate your current class grade with weighted or points-based assignments, quizzes, exams, and projects
Final Grade Calculator
Find the final exam score you need to reach your target course grade and see whether the goal is still achievable
Fraction Calculator
Add, subtract, multiply, and divide fractions and mixed numbers with simplified results and decimal conversions
Concrete Calculator
Estimate concrete volume for slabs, footings, and columns in cubic yards, cubic feet, cubic meters, and bag counts
Hours Calculator
Calculate hours worked between two times, subtract breaks, and estimate daily or weekly pay for any shift
BMR Calculator
Calculate your Basal Metabolic Rate and estimate daily calorie needs across common activity levels
BAC Calculator
Estimate blood alcohol concentration with weight, sex, drinks, and time plus 0.08 and time-to-zero guidance
Amortization Calculator
Build a loan amortization schedule, compare principal versus interest, and test extra payment strategies
Home Affordability Calculator
Estimate how much house you can afford using income, debt, taxes, insurance, HOA, and mortgage assumptions
Ovulation Calculator
Estimate your fertile window, likely ovulation date, next period, and suggested pregnancy test timing
Pace Calculator
Calculate running pace, finish time, distance, and common race projections in miles or kilometers
Days From Today Calculator
Find the date a set number of days before or after today with quick 30, 60, 90, 120, and 180 day presets
Square Footage Calculator
Calculate area for rooms, flooring, circles, triangles, and L-shaped spaces with waste and cost estimates
Standard Deviation Calculator
Calculate sample or population standard deviation, variance, mean, range, and summary statistics for any dataset