Power Calculators

⏱️ Time Converter

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Fill in the details and click Calculate to see your results.

Formula at a glance

Time Converter: Result = Value × (seconds per From unit ÷ seconds per To unit); 1 minute = 60 seconds; 1 hour = 60 minutes = 3,600 seconds · 1 day = 24 hours = 1,440 minutes = 86,400 seconds
How the time converter works: Result = Value × (seconds per From unit ÷ seconds per To unit)

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📘 About the Time

This time converter changes a duration from one unit to another across 43 units: from attoseconds and nanoseconds through seconds, minutes, hours, days, weeks, fortnights, months, quarters and years to decades, centuries and millennia — plus astronomical units (sidereal day, lunar month, tropical and Julian year), computing units such as the jiffy, and traditional units like the Indian pal, ghati, muhurta and prahar and the Chinese shichen and ke.

Months and years have different lengths, so you can choose: the average Gregorian month (30.436875 days) and year (365.2425 days), or a fixed 30-day month, a 365-day common year and a 366-day leap year. Every pair also has its own page, such as hours to minutes or days to weeks, with a table and worked examples.

🧮 Formula

Conversion
Result = Value × (seconds per From unit ÷ seconds per To unit)

Where

  • Every unit is defined by its length in seconds (1 h = 3,600 s; 1 day = 86,400 s)
  • Average month = 365.2425 ÷ 12 = 30.436875 days; average year = 365.2425 days
  • The result is shown to six significant figures

✏️ Worked examples

2.5 hours to minutes

You enter
Value2.5
FromHours
ToMinutes
You get
Converted Value150

= 150.

Try this example →

90 days to months

You enter
Value90
FromDays
ToMonths (average)
You get
Converted Value2.95694

= 2.95694.

Try this example →

1 year to hours

You enter
Value1
FromYears (365 days)
ToHours
You get
Converted Value8,760

= 8,760.

Try this example →

5 ghati to minutes

You enter
Value5
FromGhatis (India)
ToMinutes
You get
Converted Value120

= 120.

Try this example →

🧭 How to use this calculator

What you enter

  • Value
  • From
  • To

What you get

  • Converted Value

💡 Most-used time conversions

  • 1 minute = 60 seconds; 1 hour = 60 minutes = 3,600 seconds
  • 1 day = 24 hours = 1,440 minutes = 86,400 seconds
  • 1 week = 7 days = 168 hours
  • 1 month ≈ 30.44 days ≈ 4.35 weeks
  • 1 year = 365 days (366 in a leap year) = 52.14 weeks = 8,760 hours
  • 1 second = 1,000 ms = 1,000,000 µs

💡 Indian traditional time units

  • 1 vipal = 0.4 seconds
  • 1 pal = 60 vipal = 24 seconds
  • 1 ghati (ghadi) = 60 pal = 24 minutes
  • 1 muhurta = 2 ghati = 48 minutes
  • 1 prahar = 3 hours; 8 prahars = 1 day and night

❓ Frequently asked questions

How many minutes are in an hour?

60 minutes. To convert hours to minutes multiply by 60; minutes to hours, divide by 60 (e.g. 90 min = 1.5 h).

How many seconds are in a day?

86,400 seconds (24 × 60 × 60).

How many weeks are in a month?

About 4.345 weeks in an average month (30.44 days); a 30-day month is 4.286 weeks.

How many days are in a year?

365 in a common year, 366 in a leap year, and 365.2425 on average in the Gregorian calendar.

How long is a ghati?

24 minutes. 60 ghatis make a day; 1 ghati = 60 pal and 1 pal = 24 seconds. A muhurta is 2 ghatis (48 minutes) and a prahar is 3 hours.

How do I convert decimal hours to hours and minutes?

Multiply the decimal part by 60: 2.75 hours = 2 hours + 0.75 × 60 = 2 hours 45 minutes.

🔥 Popular time conversions

Hours to Minutes Minutes to Hours Minutes to Seconds Seconds to Minutes Hours to Seconds Seconds to Hours Days to Hours Hours to Days Weeks to Days Days to Weeks Months (average) to Days Days to Months (average) Years (average) to Days Days to Years (average) Months (average) to Weeks Weeks to Months (average) Years (average) to Months (average) Months (average) to Years (average) Years (average) to Weeks Milliseconds to Seconds Seconds to Milliseconds Microseconds to Milliseconds Nanoseconds to Seconds Years (average) to Hours Days to Minutes Decades to Years (average) Centuries to Years (average) Ghatis (India) to Minutes Prahars (India) to Hours Muhurtas (India) to Minutes

🌍 All 43 time units, by continent and country

Local and traditional units are listed under the country or region where they are used. Select a unit to convert it. Sizes shown are in seconds (s).

Standard systems

Astronomy

UnitEquals
Sidereal Days sid d 1 sid d = 86,164.1 s
Lunar Months lunation 1 lunation = 2,551,440 s
Tropical Years trop yr 1 trop yr = 31,556,900 s
Sidereal Years sid yr 1 sid yr = 31,558,100 s
Julian Years a 1 a = 31,557,600 s

Common units

UnitEquals
Minutes min 1 min = 60 s
Hours h 1 h = 3,600 s
Days d 1 d = 86,400 s
Weeks wk 1 wk = 604,800 s
Fortnights fn 1 fn = 1,209,600 s
Months (average) mo 1 mo = 2,629,746 s
Months (30 days) mo (30 d) 1 mo (30 d) = 2,592,000 s
Quarters qtr 1 qtr = 7,889,238 s
Years (average) yr 1 yr = 31,556,952 s
Years (365 days) yr (365 d) 1 yr (365 d) = 31,536,000 s
Leap Years yr (366 d) 1 yr (366 d) = 31,622,400 s
Decades dec 1 dec = 315,569,520 s
Centuries c. 1 c. = 3,155,695,200 s
Millennia ka 1 ka = 31,556,952,000 s

Metric (SI)

UnitEquals
Attoseconds as 1 as = 1 × 10⁻¹⁸ s
Femtoseconds fs 1 fs = 1 × 10⁻¹⁵ s
Picoseconds ps 1 ps = 1 × 10⁻¹² s
Nanoseconds ns 1 ns = 1 × 10⁻⁹ s
Microseconds µs 1 µs = 1 × 10⁻⁶ s
Milliseconds ms 1 ms = 0.001 s
Centiseconds cs 1 cs = 0.01 s
Deciseconds ds 1 ds = 0.1 s
Seconds s 1 s = 1 s
Kiloseconds ks 1 ks = 1,000 s
Megaseconds Ms 1 Ms = 1,000,000 s
Gigaseconds Gs 1 Gs = 1,000,000,000 s

Middle East

UnitEquals
Halakim (Hebrew) helek 1 helek = 3.33333 s

Science

UnitEquals
Planck Times tP 1 tP = 5.39125 × 10⁻⁴⁴ s

Science & computing

UnitEquals
Jiffies (10 ms) jiffy 1 jiffy = 0.01 s
Shakes shake 1 shake = 1 × 10⁻⁸ s
Svedbergs S 1 S = 1 × 10⁻¹³ s

Asia

China (traditional)

UnitEquals
Shichen (China) shichen 1 shichen = 7,200 s
Ke (China) ke 1 ke = 900 s

India (traditional)

UnitEquals
Vipals (India) vipal 1 vipal = 0.4 s
Pals (India) pal 1 pal = 24 s
Ghatis (India) ghati 1 ghati = 1,440 s
Muhurtas (India) muhurta 1 muhurta = 2,880 s
Prahars (India) prahar 1 prahar = 10,800 s
What people are saying
★★★★★
Anonymous · 22 Oct 2026