Time & Duration
Tools for hours, minutes, elapsed time, time duration, and basic time math.
About these time calculators
These time calculators are designed for fast estimating, planning, and everyday scheduling use. They can help with common time calculations such as hours, minutes, seconds, time duration, elapsed time, dates, days between dates, business days, weeks, age, birthdays, due dates, work hours, timesheets, pay periods, overtime, countdowns, anniversaries, and time conversions.
Common uses
Use these tools to calculate time between events, add or subtract time, compare dates, estimate work hours, calculate overtime, plan pay periods, count business days, convert hours and minutes, track timesheets, and work through practical scheduling, payroll, school, travel, and deadline calculations.
Important time planning note
Time calculations can vary based on time zones, daylight saving time, work schedules, business day rules, holidays, payroll policies, rounding methods, and local requirements. Use these calculators as planning estimates and verify important scheduling, payroll, legal, travel, or deadline-related decisions with the proper official source when needed.