Time
Precision tools for calculating time spans and durations. Add or subtract hours and minutes, convert between 12-hour and 24-hour formats, and calculate the exact time difference between two specific moments.
Calculate exact chronological age in years, months, and days. Determine the precise time elapsed since birth...
Enterprise-grade time zone synchronization tool. Compare 400+ global locations, visualize business hour overlaps, and calculate precise...
Convert Unix Epoch timestamps (seconds or milliseconds) to human-readable dates (ISO 8601, RFC 2822) with automatic...
Professional browser-based alarm system with cognitive wake-up challenges, polyphasic sleep timers, and circadian rhythm optimization.
Professional-grade solar calculator. Determine sunrise, sunset, shadow ratios, and twilight phases. Features an interactive solar path...
Professional-grade solar positioning tool. Calculates precise Sunrise, Sunset, Golden Hour, Twilight phases, and Shadow Ratios using...
Professional-grade time calculator. Compute exact duration between dates, calculate billable work hours (9-to-5), exclude weekends, and...
Professional solar cycle dashboard. Calculate precise Sunrise, Sunset, Golden Hour, and Shadow Ratios for any location...
Validate any calendar date instantly. Check Gregorian & Julian dates, leap years, day-of-week, ISO week number,...
Precision countdown timer that decrements from any clock time. Set hours, minutes, seconds and watch time...
Generate random dates around a target date using configurable fuzz ranges, distributions (uniform, Gaussian, triangular), and...
Round any date and time to the nearest minute, hour, day, week, month, quarter, or year...
Sort dates in chronological or reverse order. Supports multiple formats (YYYY-MM-DD, MM/DD/YYYY, DD.MM.YYYY). Bulk input, gap...
Find which day of the week you were born on. Enter your birth date to instantly...
Calculate your exact age in days, hours, minutes, and seconds. Live ticking counter with birthday countdown...
Convert BC to AD years, calculate durations across eras, find centuries & millennia. Handles Year 0...
Calculate the average of multiple time entries. Enter durations in hours, minutes, seconds and get mean,...
Calculate the average (mean) date from a list of dates. Find the midpoint, median, range, and...
Calculate adjusted audiobook listening time at any playback speed. Find time saved, effective WPM, estimated comprehension,...
Beautiful animated digital clock with morphing 7-segment digits, particle effects, multiple color themes, and 12/24-hour format....
Beautiful animated analog clock with smooth hands, customizable styles, and real-time display. Pastel design with multiple...
Calculate exact age in years, months, and days between any two dates. Get detailed breakdowns in...
Truncate any date to year, quarter, month, week, day, hour, or minute. Get ISO 8601, Unix...
Calculate total work hours, breaks, overtime, and pay from multiple time entries. Supports overnight shifts and...