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.
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.
LookupToolChakan