Everyday Calculators
Age, date, fuel, cooking, tip and time calculators for daily questions — enter two values and the working appears beside the result.
The questions that come up between birthdays, bills and road trips — age in exact years and days, fuel costs for a journey, cooking conversions, tip splits. Each calculator runs entirely in your browser, remembers nothing, and shows the working so you can adapt it to your own numbers.
Age Calculator
Calculate exact age in years, months, days
Date Difference Calculator
Days between two dates
Time Calculator
Add or subtract time
Trip Fuel Cost Calculator
Calculate trip fuel cost
Electricity Bill Calculator
Calculate electricity cost
Carbon Footprint Calculator
Estimate carbon footprint
GST/VAT Calculator
Add or remove GST/VAT
Paint Calculator
Calculate paint needed
Concrete Calculator
Calculate concrete volume
Garden Area Calculator
Calculate garden area and plants
Cooking Converter
Convert cooking measurements
Weather Index
Calculate comfort index
Time Zone Converter
Convert time across zones
Daily Calorie Counter
Track and calculate daily calorie needs
Currency Exchange Fee Calculator
See the true cost of bank/airport currency exchange (margin + fee)
Sleep Cycle Calculator
Calculate optimal bedtime for 90-min sleep cycles
Walking Steps Tracker
Convert steps to distance and calories
Fitness Age Calculator
Estimate fitness age vs actual age
Pet Age Calculator (Dog/Cat)
Convert pet years to human years
Blood Alcohol Content (BAC)
Estimate blood alcohol content
Vacation Budget Planner
Plan vacation expenses
Laundry Cost Calculator
Calculate laundry costs per load
Coffee Habit Cost Calculator
Calculate annual coffee spending
Grocery Budget Planner
Plan weekly grocery budget per person
Distance Pace Calculator
Calculate walking/running pace per km
Savings Goal Date
How long to reach a savings goal
Monthly Budget Allocator
Allocate income across spending categories
Event Countdown
Days until an event date (from today or any start date)
Weekly Work Hours
Total weekly work hours and annual estimate
Days Between Dates
Days, weeks, and months between two dates
Compound Savings Growth
Savings growth with monthly contributions
Business Days Calculator
Working days between two dates (Mon–Fri)
ISO Week Number Calculator
Week number of any date
Day of Year Calculator
Ordinal date — which day of the year
Leap Year Calculator
Is a year a leap year?
Lottery Odds Calculator
Probability of matching the winning numbers
Poker Flush Odds Calculator
Probability of flush-type hands in 5-card poker
Easter Date Calculator
Western Easter Sunday from the Gregorian computus
Day of Week Calculator
Weekday for any calendar date
Moon Phase Calculator
Lunar phase for a given date
Meeting Cost Calculator
Salary cost of a meeting in money and person-hours
Daylight Length Calculator
Hours of daylight by latitude and season
Pomodoro Planner
Total time for pomodoro sessions with breaks
Gift Wrap Calculator
Paper area needed for a box
Moving Truck Size Calculator
Truck volume from furnished rooms
Jet Lag Recovery Calculator
Recovery days for eastward or westward travel
Heat Pump Savings Calculator
Annual savings versus electric resistance heating
Statute of Limitations Date Calculator
Deadline date for common claim types from the incident date and the typical time limit.
Formulas, worked examples aur edge cases ke liye: Everyday guides
Frequently asked questions
How are leap years handled in date differences?
The calculators count actual calendar days, so 29 February is included when it falls inside the range. Durations are then broken into years, months and days using real month lengths rather than assuming every month is the same size — which is why the same 365-day gap can read as different month-and-day totals depending on when it starts.
Is a date difference inclusive or exclusive of the end date?
The result counts the span from the start date up to — but not including — the end date, the same convention a countdown uses. If you need the number of days a stay or event covers, add one day to include the final date.
Why does my rounded total differ from adding up rounded numbers?
Rounding each value first and then adding gives a slightly different answer from adding accurately and rounding once at the end. Rounding the final result is the more accurate approach, and is what these calculators do.
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