Calculators
Time calculators
31 tools
Age, dates, duration, and world clocks.
- Age Calculator Calculate exact age in years, months, and days from a birth date to today or a chosen date. Runs locally in your browser. Free online tool — no sign-up.
- Alaska / Anchorage Time Live local time in Anchorage and most of Alaska (America/Anchorage). See AKST UTC−9, AKDT UTC−8, DST dates, and how Alaska Time compares to other U.S.
- Bangkok / Thailand Time Show current time in Bangkok (Indochina Time, UTC+7) with a simple world-clock style readout. Runs locally in your browser. Free online tool — no sign-up.
- Beijing / China Time Live local time in Beijing and all of mainland China (Asia/Shanghai). China Standard Time (CST) is UTC+8 year-round with no Daylight Saving Time.
- Chicago / Central Time Live local time in Chicago (America/Chicago). See CST UTC−6, CDT UTC−5, U.S. DST dates, and how Central Time compares to Eastern, Mountain, and Pacific.
- Days in a Year How many days in 1 year? Free online tool — no sign-up. Clear formulas and worked examples. Built for quick, accurate checks. Runs locally in your browser.
- Denver Time Live local time in Denver (America/Denver). See MST UTC−7, MDT UTC−6, U.S. DST dates, and how Mountain Time compares to Pacific, Central, and Eastern.
- Hawaii Time Live local time in Honolulu and Hawaii (Pacific/Honolulu). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- Hong Kong Time Live local time in Hong Kong (Asia/Hong_Kong). Hong Kong Time is UTC+8 year-round with no Daylight Saving Time. Runs locally in your browser. Try it free.
- Hours in a Week Use the free Hours in a Week on CalculatorX for fast local results. Clear formulas, assumptions, and worked examples on the page. No account needed.
- Hours in a Year Use the free Hours in a Year on CalculatorX for fast local results. Clear formulas, assumptions, and worked examples on the page. No account needed.
- India Time (IST) Live local time in India (Asia/Kolkata). Indian Standard Time is UTC+5:30 year-round with no Daylight Saving Time — one zone for the whole country.
- Los Angeles Time Live local time in Los Angeles (America/Los_Angeles). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- Minutes in a Day Use the free Minutes in a Day on CalculatorX for fast local results. Clear formulas, assumptions, and worked examples on the page. Fast and free.
- Months in a Year Use the free Months in a Year on CalculatorX for fast local results. Clear formulas, assumptions, and worked examples on the page. Fast and free.
- Nepal Time Live local time in Kathmandu and Nepal (Asia/Kathmandu). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- New York Time Live local time in New York (America/New_York). See EST UTC−5, EDT UTC−4, U.S. DST dates, and how Eastern Time compares to Central, Mountain, and Pacific.
- Pakistan Time Live local time in Karachi and Pakistan (Asia/Karachi). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- Philippines Time Live local time in Manila and the Philippines (Asia/Manila). Free online tool — no sign-up. Built for quick, accurate checks. Runs locally in your browser.
- Phoenix Time Live local time in Phoenix, Arizona (America/Phoenix). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- Seconds in a Day Use the free Seconds in a Day on CalculatorX for fast local results. Clear formulas, assumptions, and worked examples on the page. Fast and free.
- Seconds in a Year How many seconds in 1 year (365 d)? Works offline-ready. Free online tool — no sign-up. Runs locally in your browser. Clear formulas and worked examples.
- Seconds in an Hour How many seconds in 1 hour? Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser. Simple and accurate.
- Seoul Time Live local time in Seoul and South Korea (Asia/Seoul). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- Singapore Time Live local time in Singapore (Asia/Singapore). Singapore Time is UTC+8 year-round with no Daylight Saving Time. Runs locally in your browser. Try it free.
- Taiwan Time Live local time in Taipei and Taiwan (Asia/Taipei). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- Tokyo / Japan Time Live local time in Tokyo and Japan (Asia/Tokyo). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- UK / London Time Live local time in London and the UK (Europe/London). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
- UTC Time Live UTC clock (UTC+0). Free online tool — no sign-up. Clear formulas and worked examples. Mobile-friendly and privacy-first. Runs locally in your browser.
- Weeks in a Month Count how many weeks fall in a given calendar month, with options for week-start conventions. Runs locally in your browser. Free online tool — no sign-up.
- Weeks in a Year Use the free Weeks in a Year on CalculatorX for fast local results. Clear formulas, assumptions, and worked examples on the page. No account needed.