Everyday lookup tools
Common life, date, calendar, body, and public information utilities.
Subcategories
This category is split by real user workflows so each tool set is easier to scan.
Common life, date, calendar, body, and public information utilities.
Date basics5 toolsAge, leap year, day-of-year, English date formats, and Japanese era conversion.
Date ranges and calendars7 toolsDate math, range summaries, week numbers, month calendars, durations, quarters, and format conversion.
Time, countdown and work hours5 toolsWorkdays, countdowns, stopwatch/timer, world time, and business-hour calculations.
Lunar calendar, solar terms and almanac4 toolsLunar dates, lunar-to-solar conversion, 24 solar terms, and Chinese almanac lookup.
Body metrics and training9 toolsMuscles, height, BMI, BMR, body fat, healthy weight, calories, sleep, and water intake.
Cycle and pregnancy2 toolsMenstrual cycle prediction and pregnancy due date lookup.
Everyday calculators6 toolsUnits, RMB uppercase, China ID, fuel consumption, shelf life, and GPA.
Relations, zodiac and folk culture5 toolsChinese relation titles, Bazi entertainment, zodiac, dream lookup, and feng shui study.
Travel and place recommendations1 toolsGlobal attractions, photo spots, food, activities, and travel tips.
Date basics
Age, leap year, day-of-year, English date formats, and Japanese era conversion.
年龄计算与生日查看
输入生日，查看精确年龄、出生星期、下次生日日期和距离生日还有多少天。
年龄生日日期Japanese era date converter
Convert Gregorian dates and Japanese era dates across Reiwa, Heisei, Showa, Taisho, and Meiji with resume-friendly date text.
LookupToolChakanLeap year checker
Check whether a Gregorian year is a leap year and inspect its February and full-year day counts.
LookupToolChakanDay of year calculator
Find the day number, remaining days, quarter, weekday, and leap-year context for a date.
LookupToolChakanEnglish date formatter
Format a date in common US, UK, long, short, ordinal, weekday, and ISO English date styles.
LookupToolChakanDate ranges and calendars
Date math, range summaries, week numbers, month calendars, durations, quarters, and format conversion.
Date calculator
Use this date calculator tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanDate range summary
Summarize a date range with inclusive days, days between, weekdays, weekends, full weeks, month coverage, and weekday distribution.
LookupToolChakanWeek number calculator
Look up ISO week number, week-year, weekday index, week start and end dates for a Gregorian date.
LookupToolChakanMonth calendar viewer
Generate a month calendar with week rows, weekdays, weekends, ISO week labels, and date details.
LookupToolChakanTime duration converter
Convert days, hours, minutes, seconds, and milliseconds into total units and a normalized human-readable duration.
LookupToolChakanQuarter calculator
Find the calendar quarter for a date, quarter start and end dates, progress, remaining days, and next quarter.
LookupToolChakanDate format converter
Convert a local date and time into ISO, UTC, Chinese, slash, compact, Unix timestamp, and RFC 3339 formats.
LookupToolChakanTime, countdown and work hours
Workdays, countdowns, stopwatch/timer, world time, and business-hour calculations.
Workday calculator
Count workdays, weekends, natural days, and manually excluded holidays between two dates.
LookupToolChakanCountdown day calculator
Calculate how many days remain until an event date, or how many days have passed.
LookupToolChakanStopwatch and timer
Create a local stopwatch or countdown timer template with a real-time browser timer panel and shareable duration link.
LookupToolChakanWorld time converter
Convert a base date and time across common IANA time zones for meetings, travel, and international coordination.
LookupToolChakanBusiness hour calculator
Calculate working minutes and hours between two date-times using a weekday schedule and daily work window.
LookupToolChakanLunar calendar, solar terms and almanac
Lunar dates, lunar-to-solar conversion, 24 solar terms, and Chinese almanac lookup.
Lunar calendar
Use this lunar calendar tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanLunar to solar date converter
Convert a Chinese lunar calendar date, including leap months, into its Gregorian date with zodiac, heavenly stems, earthly branches, and solar term context.
LookupToolChakan24 solar terms lookup
View the 24 Chinese solar terms for a year and inspect the previous, current, and next solar term around a selected date.
LookupToolChakanChinese almanac
View Chinese almanac information with a structured layout for lunar date, suitable activities, and cautions.
LookupToolChakanBody metrics and training
Muscles, height, BMI, BMR, body fat, healthy weight, calories, sleep, and water intake.
Muscle group explorer
Find exercises by muscle area, or select an exercise to inspect the main and secondary muscle groups.
LookupToolChakanChild height estimator
Estimate a child's genetic target adult height range from parent heights, with a clear non-medical disclaimer.
LookupToolChakanBMI calculator
Use this bmi calculator tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanBMR calculator
Estimate basal metabolic rate from sex, age, height, and weight using a common formula.
LookupToolChakanBody fat estimator
Estimate body fat percentage from circumference measurements using the US Navy method.
LookupToolChakanHealthy weight range calculator
Convert a height into a BMI-based healthy weight range and an approximate BMI 22 reference.
LookupToolChakanTDEE calorie estimator
Estimate BMR and TDEE from sex, age, height, weight, and activity level, then preview maintenance, fat-loss, and muscle-gain calorie targets.
LookupToolChakanSleep cycle calculator
Plan bedtimes or wake-up times from a target clock time, fall-asleep delay, and sleep-cycle length.
LookupToolChakanDaily water intake calculator
Estimate daily water intake from body weight, activity minutes, and climate adjustment with cup and reminder ranges.
LookupToolChakanCycle and pregnancy
Menstrual cycle prediction and pregnancy due date lookup.
Menstrual cycle estimator
Use this menstrual cycle estimator tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanPregnancy due date estimator
Use this pregnancy due date estimator tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanEveryday calculators
Units, RMB uppercase, China ID, fuel consumption, shelf life, and GPA.
Unit converter
Use this unit converter tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanRMB uppercase converter
Use this rmb uppercase converter tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanChina ID checker
Use this china id checker tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanFuel consumption calculator
Calculate L/100km, km/L, fuel cost, and cost per kilometer from distance, fuel, and price.
LookupToolChakanShelf life date calculator
Calculate an expiry date and remaining days from production date and shelf-life days.
LookupToolChakanGPA calculator
Estimate weighted GPA from course credits and numeric or letter grades.
LookupToolChakanRelations, zodiac and folk culture
Chinese relation titles, Bazi entertainment, zodiac, dream lookup, and feng shui study.
Chinese relative title calculator
Look up common Mandarin Chinese kinship titles from a relationship chain such as father’s older sister.
LookupToolChakanBazi entertainment lookup
Use this bazi entertainment lookup tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanZodiac lookup
Use this zodiac lookup tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanZhougong dream lookup
Use this zhougong dream lookup tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanFeng shui study lookup
Use this feng shui study lookup tool to inspect, convert, or generate a clear result directly in your browser.
LookupToolChakanTravel and place recommendations
Global attractions, photo spots, food, activities, and travel tips.