Ngày giờ
Age, date difference and timestamp tools
Select a tool below. Every tool runs locally in your browser and is free to use.
⏰ Ngày giờ · Total 28 tools
Máy tính tuổiOnline age calculator: enter birthdate to get exact age in years/months/days, total days/hours, next birthday countdown, zodiac with Gregorian/lunar support.
Age Difference CalculatorCalculate the difference between two dates in years, months and days. Calculates age gap in years/months/days with leap year support.
đồng hồ báo thức trực tuyếnOnline alarm clock tool: set time and ringtone with fullscreen and background alert for daily and work reminders, with one-click copy, offline.
Đồng hồ nhị phânBinary clock tool: show real-time binary clock with multi-format and learning mode for study and geek, with one-click copy, offline.
Birthday CountdownBirthday countdown tool: get countdown and age from birthday with reminders for wishes and anniversaries, with one-click copy, offline.
Bộ đếm ngượcCountdown timer: set hours/minutes/seconds with fullscreen, sound alerts and loop for exams, workouts and presentations Supports batch processing and one-click copy.
Máy tính cộng/trừ ngàyDate add/subtract tool: add or subtract days, weeks and months from a date handling month-end and leap years for scheduling, with one-click copy and offline.
Date CountdownDate countdown: pick target date to get remaining days, hours and minutes with holiday and anniversary reminders for planning.
Máy tính hiệu ngàyDate difference calculator: count days, weeks, months, business and weekend days between dates with auto order handling, one-click copy and offline.
Date Format ConverterDate format converter: enter date to convert to ISO, US, EU, RFC and timestamp with bulk for development and data, with one-click copy and offline.
Tra cứu thông tin ngày thángDate info calculator: enter date to get weekday, leap year, day of year and quarter with holiday marks for calendar and work planning.
Excel Date Serial ConverterExcel date converter: convert between Excel serial numbers and dates 1900 system with bulk and formatting for office data, with one-click copy and offline.
Đếm ngược ngày lễFestival countdown tool: cover Chinese lunar and Gregorian festivals automatically counting down to next festival for planning, with one-click copy and offline.
Japan Era ConverterJapan era converter: enter Gregorian year to get Reiwa/Heisei/Showa era for Japan, multilingual.
Máy tính kiểm tra năm nhuậnLeap year checker: check any year with Gregorian rules showing February days and nearby leap years for learning and calendar, with one-click copy and offline.
Tra cứu lịch âmLunar calendar: convert Gregorian and lunar dates with solar terms, festivals and almanac for traditional holidays. Supports batch processing and one-click copy.
Meeting Time CalculatorMeeting time calculator: enter start and end time to get duration, cost and person-hours with multi-timezone for meeting cost and efficiency.
Trình lập kế hoạch thời gian họpMeeting time planner: enter multiple timezones to find common working window with DST for global team scheduling. Supports batch processing and one-click copy.
Máy tính pha Mặt TrăngMoon phase calculator: enter date to get moon phase, illumination and next full moon with lunar and astronomy data for stargazing.
Bấm giờStopwatch timer: support start pause reset and laps with milliseconds and history for sports and lab timing, with one-click copy, offline and multilingual.
Máy tính thời gian tương đốiTime ago calculator: calculate interval from a time to now with just now, minutes and days and timestamp conversion, one-click copy and offline.
Máy tính khoảng thời gianTime duration calculator: get duration from start end with multi-segment sum and unit conversion for scheduling, with one-click copy, offline.
Trình chuyển đổi dấu thời gianTimestamp converter: convert Unix seconds to dates showing local and UTC with weekday for development, with one-click copy and offline.
Trình chuyển đổi múi giờTimezone converter: convert time between source and target zones with multi-city view for meetings and travel, with one-click copy, offline and multilingual.
Timezone DifferenceTimezone diff calculator: get difference between two zones with DST and table for collaboration and travel, with one-click copy, offline.
Week Number CalculatorWeek number calculator: get ISO week number and start end dates from date for scheduling and projects, with one-click copy, offline.
Đồng hồ thế giớiWorld clock tool: show real-time multi-city times with difference and DST for collaboration and travel, with one-click copy, offline.
Tra cứu cung hoàng đạoZodiac sign finder: get zodiac sign from birthday with traits, fortune and match for fun and daily, with one-click copy, offline and multilingual.
FAQ
What is the Ngày giờ category?
The Ngày giờ category includes 28 free online tools for common needs. All run locally in your browser - no sign-up or install required.
Are these tools free?
Yes, all tools are free with no usage limits.
Do I need to register?
No. Open a page and use it right away - your data stays in your browser.
Which languages are supported?
This site supports 12 languages: Chinese, English, Japanese, Korean, Spanish, French, German, Portuguese, Russian, Arabic, Indonesian and Hindi.