시간 변환 계산기

Convert time in hours and minutes to decimal hours. Enter HH:MM — see decimal hours for timesheet, billing, and payroll calculations. Free.

Convert decimal hours to hours and minutes. Enter decimal time (e.g. 2.75) — see HH:MM format for timesheets and billing. Free.

Convert between 12-hour and 24-hour (military) time. Enter either format — see the other with AM/PM and 24h equivalents. Free.

Convert hours to total minutes. Fast and accurate result with formula, step-by-step method and unit overview. Free tool.

Find the ISO 8601 week number for any date. Enter your date — see week number, year, and first/last day of that week. Free.

Find which fiscal or calendar quarter any date falls in. Enter your date — see quarter number, Q start/end dates, and days remaining. Free.

Calculate days remaining until retirement from your target date. Enter current and retirement date — see days, months, and years remaining. Free.

Find the exact solar noon time for any city or coordinates. Get sunrise, sunset, and peak sun position — updated daily. Free, no sign-up needed.

Find sunset time for any date and location. Enter coordinates or city — see sunset, civil twilight, and golden hour times. Free.

Calculate UTC offset and compare multiple time zones. Enter locations — see current time, UTC offset, and DST status for each. Free.

Convert time to decimal hours for payroll and timekeeping. Enter HH:MM — see decimal hours and minutes for billing purposes. Free.

Find sunrise time for any date and location. Enter coordinates or city — see sunrise, astronomical dawn, and blue hour times. Free.