🧮 CalKing

Paycheck Calculator

Calculate your take-home pay after federal and state taxes, FICA, and deductions

Salary Calculator

Convert between hourly, weekly, biweekly, monthly, and annual salary

Tip Calculator

Calculate tip amount and split the bill among friends

Mortgage Calculator

Calculate monthly payments for fixed-rate and adjustable-rate mortgages

Loan Calculator

Calculate monthly payments and total interest for any type of loan

Savings Calculator

Calculate how much your savings will grow with compound interest

Compound Interest Calculator

See how your money grows over time with the power of compound interest

Investment Calculator

Calculate potential returns on stocks, ETFs, and other investments

401k Calculator

Plan your retirement savings with employer match and compound growth

Sales Tax Calculator

Calculate sales tax for any US state with up-to-date rates

Inflation Calculator

Calculate the impact of inflation on purchasing power over time

Hourly to Salary Converter

Convert hourly wage to annual salary and vice versa

BMI Calculator

Calculate your Body Mass Index and see where you fall on the BMI scale

BMR Calculator

Calculate your Basal Metabolic Rate to know how many calories you burn at rest

Calorie Calculator

Find your daily calorie needs based on age, weight, height, and activity level

Body Fat Calculator

Estimate your body fat percentage using the U.S. Navy method

Water Intake Calculator

Calculate how much water you should drink daily based on your body and activity

Sleep Calculator

Find the best time to sleep or wake up based on 90-minute sleep cycles

BAC Calculator

Estimate your Blood Alcohol Content based on drinks, weight, and time

Due Date Calculator

Calculate your baby's due date based on your last menstrual period

Ovulation Calculator

Predict your ovulation date and fertile window based on your cycle

Pregnancy Week Calculator

Find out how many weeks pregnant you are and your trimester

Age Calculator

Calculate your exact age in years, months, and days

Date Calculator

Calculate the number of days between two dates or add/subtract days

Currency Exchange Calculator

Convert between 30+ currencies with hourly updated rates. Includes travel destination currencies like VND, THB, PHP.

Income Tax Calculator

Estimate your federal income tax based on filing status and income

Property Tax Calculator

Estimate annual property tax based on home value and local tax rate

Capital Gains Tax Calculator

Calculate tax on investment profits for short-term and long-term holdings

Auto Loan Calculator

Calculate monthly car payments with down payment and trade-in value

Rent vs Buy Calculator

Compare the financial impact of renting versus buying a home

GPA Calculator

Calculate your Grade Point Average on a 4.0 scale

Grade Calculator

Calculate your weighted grade average and what you need on the final

College Cost Calculator

Estimate total college costs including tuition, room, and board over 4 years

Percentage Calculator

Calculate percentages: what is X% of Y, percentage change, and more

Unit Converter

Convert between imperial and metric units for length, weight, volume, and more

Area Calculator

Calculate area for rectangles, circles, triangles, and other shapes

Temperature Converter

Convert between Fahrenheit, Celsius, and Kelvin instantly

Speed Converter

Convert between mph, km/h, m/s, knots, and other speed units

Gas Mileage Calculator

Calculate your car's MPG, fuel cost per mile, and trip fuel expenses

Character Counter

Count characters, words, sentences, and paragraphs in your text

Time Zone Converter

Convert time between different time zones around the world