All Time Tools Tools
34 free time tools tools, no registration or login required, ready to use
⏰ About Time Tools
Our time tools collection offers professional online time calculation, date conversion, countdown timers, lunar calendar queries, and more. Whether you need workday calculations, age calculations, timezone conversion, or traditional lunar calendar solar term queries, everything is fast and accurate. All tools require no registration or login — your perfect time management companion for work and life.
Online Stopwatch
Precise timing, record time points, supports full-screen mode and data export
Analog Clock
Analog clock, supports automatic setup, can simulate exam room clock
Digital Clock
Real-time display of current time, supports flip animation, supports multiple themes
Countdown
Custom target time, real-time countdown reminder
Global Time
View real-time time across global time zones
Ba Zi (Four Pillars of Destiny)
Generate Ba Zi based on birth date
Countdown Days
Countdown days web version
Pomodoro Technique
Time management tool alternating focus and rest
Today's Plan
Quickly create and manage daily to-do items
Timestamp Converter
Convert time to timestamp and timestamp to time in different time zones
Global Time Zone Converter
Convert time zones online
Time Offset Calculator
Calculate time offsets online
Working Day Calculator
Calculate working days and paid days for any period in 2026 online for free, accurately handling holidays, compensatory workdays, and weekends
Today's Tasks
Minimalist daily task manager
Perpetual Calendar
Minimalist perpetual calendar
Twenty-Eight Mansions
Explore the wisdom of ancient Chinese constellations and interpret traditional culture
Gregorian-Lunar Calendar Converter
Supports Gregorian and lunar calendar conversion, solar term and festival lookup, zodiac and constellation, heavenly stems and earthly branches, and traditional almanac information
Time Zone Converter
Get current time zone instantly and convert
Shelf Life Calculator · Expiration Date Estimator
Enter production date/expiration date and shelf life duration to automatically calculate expiry date and remaining days, supporting day/month/year units
Lunar Mansion Relationship Calculator
Based on the Xiuyao Sutra · 27 Mansions System · In-depth fate analysis
Age Calculator
Supports both Gregorian and lunar calendar modes: accurately calculate chronological age (years/months/days), nominal age, days/months lived, birth weekday, zodiac sign, constellation, and next birthday countdown.
Blue Hour Calculator
Accurately calculate blue hour times before sunrise and after sunset based on solar elevation angle
Chinese Double Hour Calculator
Enter any time to automatically match the corresponding ancient Chinese double hour (Zi, Chou, Yin, Mao, etc.), displaying alternate names, five elements attributes, and historical origins
Week Number Calculator
Accurately calculate the week number of any date within the year, supporting custom start-of-week rules (Monday/Sunday)
Day-Night Calculator (Ancient Chinese Time Periods)
Bidirectional conversion between modern time and ancient five-watch time periods, accurately calculating watches and double hours, with educational content on traditional Chinese timekeeping culture
Pengzu Taboo Calendar
Convert Gregorian dates to heavenly stems and earthly branches, Pengzu daily taboos and recommendations, almanac hourly reference, including daily stem taboos and twelve double-hour traditional folk customs
Solar Elevation Angle Calculator
Accurately calculate the sun position (elevation angle, azimuth angle) at any moment based on solar altitude, display sunrise/sunset/noon times, supporting location queries for provinces, cities, and counties nationwide
Light Year Converter
Bidirectional precise conversion between light years and kilometers, meters, astronomical units, parsecs, and miles. Learn how many kilometers are in a light year and see cosmic distance references
Baby Days Calculator
Accurately calculate your baby's age in days, weeks, and months, display growth stages and milestone countdowns, helping parents record every day of their baby's growth
Solar Terms Calendar · 24 Solar Terms Almanac
Supports monthly solar term queries: today's solar term, this month's solar terms, next solar term preview, with detailed meanings, climate characteristics, and traditional customs
Sanfu & Shujiu Calculator · Traditional Seasonal Calendar
Accurately calculate the start and end dates of Sanfu (hottest days) and the number of Sanfu days, query start/end dates and period details of Shujiu (nine cold periods), with traditional wellness tips
Benmingnian Calculator · Chinese Zodiac · Traditional Customs · Next Benmingnian Countdown
Accurately calculate your zodiac sign, Benmingnian years, and remaining days until your next Benmingnian, with explanations of traditional customs, all calculations performed locally for privacy protection
Dao Calendar Online Lookup
Free online lookup of Daoist calendar holidays, sexagenary year records, Sanyuan, Wula, Bajie, Bahui, Wu days, Tian She days, and other important dates. Daoist year calculation and festival overview, supporting Gregorian and lunar calendar comparison.
Buddhist Calendar Online Lookup
Free online lookup of Buddhist calendar holidays, Ten Fasting Days, Six Fasting Days, Guanyin Fasting, New/Full Moon Fasting, Four Heavenly Kings Patrol Days, Buddha and Bodhisattva birthdays, and other important dates. Buddhist year calculation, fasting day lookup, and festival overview, supporting Gregorian and lunar calendar comparison.