Lion Calculator
A hub of free, fast, and easy-to-use online calculators. Calculate anything you need for health, finance, and more.
Age Calculator
Calculate your exact age down to the day.
BMI Calculator
Check your Body Mass Index for health insights.
Currency Converter
Real-time exchange rates for global currencies.
Days Calculator
Find the number of days between two dates.
Calorie Calculator
Estimate your daily calorie needs.
Water Intake Calculator
Estimate your daily hydration needs.
Sleep Calculator
Find your optimal wake-up times.
Ovulation Calculator
Predict your most fertile days.
Pregnancy Calculator
Estimate your baby's due date.
Countdown Timer
Set a timer for your next big event.
Percentage Calculator
Solve various percentage problems.
Tip Calculator
Calculate tips and split the bill with friends.
Discount Calculator
Find the final price after a sale discount.
Survival Calculator
How long can your savings last without income?
GPA Calculator
Convert your GPA across different scales.
Unit Converter
Convert length, weight, and temperature.
Salary Calculator
Convert your annual salary to hourly pay.
Cost of Living Calculator
Estimate monthly expenses by city.
Relocation Calculator
Estimate the cost of your move.
Cost of Raising a Child Calculator
Estimate the total cost to raise a child to age 18.
Sun Exposure Calculator
Estimate how long until you get a sunburn.
Stress Score Calculator
Assess your stress level based on symptoms.
Shoe Size Converter
Convert shoe sizes between US, EU, and UK.
Cat Age Calculator
Convert your cat's age to human years.
Life on Screen Calculator
How many years of your life will you spend on screen?
Coffee Cost Calculator
See how much your daily coffee habit really costs.
Phone Addiction Score
Assess your level of phone usage and dependency.