Understand the difference between calendar days, working days and business days, with simple examples and guidance on choosing the right date calculation.
Utilities & productivity Date & time Calculators Converters 4 min read
Days and months are different units, and only the day count is fixed. Month ends, leap days, year turns, rejected input, plus the weekday of the answer.
Utilities & productivity Date & time Calculators Converters 4 min read
Two dates return four numbers: elapsed, inclusive, weeks and days, and calendar difference. Why they disagree, and which one a quoted figure was probably counting.
Utilities & productivity Date & time Calculators Converters 4 min read
Start and end times give a duration, not a date: identical times return zero, not 24 hours, and a shift past midnight is handled without a 24-hour assumption.
Utilities & productivity Date & time Calculators Converters 3 min read
Take the shift span, then subtract the minutes you were not working; the traps are units and the size of the break. Overnight shifts work the same way.
Utilities & productivity Date & time Calculators Converters 3 min read
Gross time is what the clock shows; net time is what remains after a break. One break entry in minutes means several breaks have to be added before you subtract.
Utilities & productivity Date & time Calculators Converters 3 min read
Timesheet errors are usually unit errors, not arithmetic: add each row in minutes, convert once, record breaks. Four recurring mistakes and the checks that catch them.
Utilities & productivity Date & time Calculators Converters 4 min read
Counting backwards is the same arithmetic; the extra decisions are direction and how the count is typed. Month ends, year boundaries, and how to check the earlier date.
Utilities & productivity Date & time Calculators Converters 3 min read
Thirty days is a count you type, not a button you press, and not one calendar month. Three starting dates, the February trap, and what to type for a straight answer.
Utilities & productivity Date & time Calculators Converters 3 min read