Lion Calculator
A collection of free, fast, and accurate online calculators for finance, health, dates, and more. Get instant answers for all your calculation needs.
Date & Time
Age Calculator
Calculate your exact age down to the day.
Days Calculator
Find the number of days between two dates.
Timezone Calculator
Convert time between multiple cities instantly.
Countdown Timer
Set a timer for your next big event.
Finance & Money
Currency Converter
Real-time mid-market exchange rates for global currencies.
Salary Calculator
Convert your annual salary to hourly pay.
Tip Calculator
Calculate tips and split the bill with friends.
Discount Calculator
Find the final price after a sale discount.
Cost of Living Calculator
Estimate monthly expenses by city.
Salary vs Cost of Living
Check if your income matches living expenses.
US Income Tax Calculator
Estimate your federal tax liability for the 2023 tax year.
Time to Millionaire
Estimate how long it will take to reach your savings goals.
Survival Calculator
How long can your savings last without an income?
Fuel Cost Calculator
Estimate your monthly and yearly fuel spending.
Travel Budget Calculator
Estimate realistic travel expenses for any trip.
Marriage Cost Calculator
Estimate a realistic budget for your wedding.
Education Cost Calculator
Estimate the total cost of education globally.
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.
Modern Life
Coffee Cost Calculator
See how much your daily coffee habit really costs.
Fast Food Cost Calculator
See the long-term cost of your eating habits.
Food Delivery Cost Calculator
See the true cost of ordering from apps like Uber Eats.
Shopping Habit Calculator
See the true cost of your shopping habits over time.
Expense Leak Calculator
Find hidden drips in your monthly budget.
Health & Wellness
BMI Calculator
Check your Body Mass Index for health insights.
Calorie Calculator
Estimate your daily calorie needs.
Water Intake Calculator
Estimate your daily hydration needs.
Sleep Calculator
Find your optimal wake-up times.
Stress Score Calculator
Assess your stress level based on symptoms.
Phone Addiction Score
Assess your level of phone usage and dependency.
Ovulation Calculator
Predict your most fertile days.
Pregnancy Calculator
Estimate your baby's due date.
Work & Career
AI Job Risk Calculator
Estimate your job's potential risk from automation.
Work-Life Balance Calculator
Assess balance between work, rest, and personal life.
Commute Time Cost Calculator
See the true cost of your commute in time and money.
Years of Work Left Calculator
Visualize your career timeline until retirement.
Time to Retirement Calculator
How long until you reach retirement age?
General Tools
Percentage Calculator
Solve various percentage problems.
Unit Converter
Convert length, weight, and temperature.
GPA Calculator
Convert your GPA across different scales.
Shoe Size Converter
Convert shoe sizes between US, EU, and UK.
Electricity Bill Calculator
Estimate your monthly electricity costs and usage.
Water Usage Calculator
Estimate your household's water consumption.
Life on Screen Calculator
How many years of your life will you spend on screen?
Cat Age Calculator
Convert your cat's age to human years.