Dates and everyday guides
Ages, date differences, working days, grades, bills and everyday sums.
20 articles

- Age Calculator: Years, Months and Days From DOBAge in years, months and days: subtract a date of birth step by step, handle borrowing and find age as on a cut-off date.Age in Years Months Days · 7 min read
- Business Days Between Two Dates: How to CountBusiness days between dates: remove weekends and holidays from the calendar count, with an October 2026 example and a work-week table.Business Days Between Dates · 7 min read
- CGPA to Percentage: Conversion Formula and ChartCGPA to percentage: multiply by your institution's factor (often 9.5), check a 6.0 to 10 chart and learn when the rule differs.CGPA to Percentage · 7 min read
- Date Difference: Find the Gap Between Two DatesDate difference: find the gap between two dates as years, months and days, plus total days and weeks, with a borrowing example.Date Difference · 7 min read
- Days Between Dates: Count Days Without ErrorsDays between dates: count exact days with day-of-year numbers, handle leap years and decide whether to include the start date.Days Between Dates · 7 min read
- Final Exam Grade Calculator: What Score Do You Need?Final exam grade: use the exam weight, your current grade and a target to find the score needed and see if it is reachable.Final Exam Grade · 7 min read
- How to Calculate GPA: Weighted Formula, ExamplesGPA: multiply each grade point by its credits, add them and divide by total credits, with a semester and a cumulative example.GPA · 7 min read
- Hours to Minutes: Convert Decimal Hours CorrectlyMultiply hours by 60 to get minutes. See why 6.4 hours is 6 h 24 min, a decimal-hours chart and a timesheet worked out from start to finish.Hours to Minutes · 6 min read
- Minutes to Seconds: Convert mm:ss Timings FastMultiply minutes by 60 to get seconds. Convert 4:35 to 275 seconds, add up track lengths with carry-over, and avoid the 2.30 versus 2:30 slip.Minutes to Seconds · 6 min read
- Percentage to CGPA Calculator: Formula and TablePercentage to CGPA: divide by your institution's factor (often 9.5), use a 50 to 95 table and round the result safely.Percentage to CGPA · 6 min read
- Room Area Calculator: Square Feet and Square MetresRoom area calculator guide: multiply length by width, convert sq ft to m², handle L-shaped rooms and order tiles with 10% allowance.Room Area · 5 min read
- Square Footage Calculator: Measure Rooms and FlatsFind square footage with length × width, add up L-shaped rooms, convert from square metres and see what a price per sq ft really means.Square Footage · 6 min read
- Time Duration Calculator: Hours Between Two TimesTime duration: turn both clock times into minutes, subtract, and add a day for overnight shifts to get exact hours and minutes.Time Duration · 6 min read
- Time Zone Conversion: IST to UTC, US and UKConvert time zones through UTC: subtract the source offset, add the target offset. IST to UTC, UK, US and Dubai, with a chart and worked example.Time Zone Conversion · 6 min read
- Weeks Between Dates Calculator: Full Weeks + DaysWeeks between dates: count the days, divide by 7, and read off full weeks and extra days, with inclusive and exclusive counting explained.Weeks Between Dates · 6 min read
- Weeks Until a Date Calculator: Count Down to Any DayWeeks until a date: subtract today from the target date, divide by 7, and turn the weeks left into a weekly plan you can follow.Weeks Until a Date · 6 min read
- Working Days Calculator: Weekdays Minus HolidaysWorking days: count Monday to Friday between two dates, subtract holidays, and see how a 5-day or 6-day week changes the total.Working Days · 7 min read
- Age calculations, explainedLearn different ways to calculate age, from exact years to days, with clear examples.Age & dates · 4 min read
- Date differences without the guessworkLearn how to calculate the number of days, weeks or months between two dates, with easy examples.Dates · 5 min read
- How to split a bill and tip fairlyWork out each person's share of a bill, including tip and tax, without awkward maths at the table.Bills & tips · 4 min read
Still looking for an answer?
Tell us which calculator you used and what happened.
