Week CalculatorSlide weeks forward or backward or compare week spans with ISO calendar context.Months CalculatorShift months or measure the exact months between two dates with two-decimal rounding.Days CalculatorHandle day-level offsets and comparisons complete with hour and minute verification.Hours CalculatorAdd, subtract, or compare hours between timestamps with share-ready ISO summaries.Minutes CalculatorWork with minute-level offsets, decimal precision, and 5-480 minute quick references.Seconds CalculatorControl second-level add/subtract operations with fractional support for broadcast or lab work.
Time Shift Calculators
Time Shift Calculators Hub
This hub bundles every unit-specific shift calculator so you can plan schedules with the same layout no matter the granularity. Each tool supports add, subtract, and between modes plus quick reference tables for frequent offsets.
Build repeatable schedules
Answer planning prompts like "What week number do we hit 14 weeks after this sprint kickoff?" with one calculation.
Handle staffing questions such as "If the clinic closes at 7:30 PM, what time should I clock out when I subtract 9 hours from that timestamp?".
Solve rapid-fire needs like "How many seconds remain until our broadcast hits 00:05:00?" with calculators that respect leap years and partial units.
Last updated: September 16, 2026