Articles

How fast does a new car depreciate? See the typical year-one value drop, straight-line vs declining-balance methods, and a worked 3-year example.

Lease vs finance total cost compared: see monthly payments, mileage fees, wear and tear charges, and what you actually own after 3 to 6 years of driving a car.

Learn how to calculate anniversary date and future milestones, such as a 25th wedding or 10-year work anniversary, including the Feb 29 leap day rule.

Learn the simple math for figuring out how old you will be in any year, future or past, plus the birthday rule that can shift your answer by one year.

Planning a meeting across time zones? Learn the UTC method, half hour and 45 minute offsets, daylight saving shifts, and the date line trap step by step.

What week number is it? Learn how ISO 8601 weeks work, why week 1 follows the year’s first Thursday, and why year-end dates often confuse the real count.

Learn how to calculate time card hours and overtime pay. Convert clock times to decimal hours, total your work week, and find your time-and-a-half rate.

Learn how to count business days between two dates: skip weekends and common US holidays, then follow a clear step-by-step method with a worked example.

How many weeks pregnant am I? Learn the standard LMP based due date math doctors use to count gestational weeks and estimate your due date, step by step.

Learn how to calculate square footage of a house: measure each room in feet, multiply length by width, and add every room together for an accurate total.