Time Unit Converter

Easily convert time units with the Time Unit Converter. Switch between seconds, minutes, hours, days, weeks, months, and years for accurate and quick calculations in any application!

Time Unit Converter

Time Unit Converter

Convert a time value between seconds, minutes, hours, days, and weeks.

* Enter your time value and select the units.

Step 1: Enter Conversion Data

Conversion Formula:
Converted Time = (Input Value × From Factor) ÷ To Factor
(Factors represent seconds per unit)

Time Unit Converter

Popular Time Unit Conversions

  • Minutes to Hours
  • Hours to Minutes
  • Hours to Days
  • Days to Hours
  • Seconds to Days
  • Days to Seconds
  • Minutes to Days
  • Days to Months
  • Months to Days
  • Days to Years
  • Years to Days
  • Minutes to Seconds
  • Seconds to Minutes
  • Milliseconds to Seconds
  • Seconds to Milliseconds

Complete List of Time Units for Conversion

  • Second [s]
  • Millisecond [ms]
  • Minute [min]
  • Hour [h]
  • Day [d]
  • Week
  • Month
  • Year [y]
  • Decade
  • Century
  • Millennium
  • Microsecond [µs]
  • Nanosecond [ns]
  • Picosecond [ps]
  • Femtosecond [fs]
  • Attosecond [as]
  • Shake
  • Month (synodic)
  • Year (Julian)
  • Year (leap)
  • Year (tropical)
  • Year (sidereal)
  • Day (sidereal)
  • Hour (sidereal)
  • Minute (sidereal)
  • Second (sidereal)
  • Fortnight
  • Septennial
  • Octennial
  • Novennial
  • Quindecennial
  • Quinquennial
  • Planck Time

Units, Symbols, and Conversion Values

Units, Symbols, and Conversion Values Used in Time Conversion to Common Units

Common Unit: Second [s]

Convert from UnitSymbolConvert to (s)Multiply by (Conversion Factor)
MillisecondmsSecond0.001
MinuteminSecond60
HourhSecond3600
DaydSecond86400
WeekweekSecond604800
MonthmonthSecond2628000
YearySecond31557600
DecadedecadeSecond315576000
CenturycenturySecond3155760000
MillenniummillenniumSecond31557600000
MicrosecondµsSecond1.0E-6
NanosecondnsSecond1.0E-9
PicosecondpsSecond1.0E-12
FemtosecondfsSecond1.0E-15
AttosecondasSecond1.0E-18
ShakeshakeSecond1.0E-8
Month (synodic)month (synodic)Second2551443.84
Year (Julian)year (Julian)Second31557600
Year (leap)year (leap)Second31622400
Year (tropical)year (tropical)Second31556930
Year (sidereal)year (sidereal)Second31558149.54
Day (sidereal)day (sidereal)Second86164.09
Hour (sidereal)h (sidereal)Second3590.1704166667
Minute (sidereal)min (sidereal)Second59.8361736111
Second (sidereal)second (sidereal)Second0.9972695602
FortnightfortnightSecond1209600
SeptennialseptennialSecond220752000
OctennialoctennialSecond252288000
NovennialnovennialSecond283824000
QuindecennialquindecennialSecond473040000
QuinquennialquinquennialSecond157680000
Planck TimePlanck timeSecond5.39056E-44

Units, Symbols, and Conversion Values Used in Time Conversion from Common Units

Common Unit: Second [s]

Convert to UnitSymbolConvert from (s)Multiply by (Conversion Factor)
MillisecondmsSecond1000
MinuteminSecond0.0166666667
HourhSecond0.0002777778
DaydSecond0.0000115741
WeekweekSecond1.65343915E-6
MonthmonthSecond3.80257025E-7
YearySecond3.1709792E-8
DecadedecadeSecond3.1709792E-10
CenturycenturySecond3.1709792E-11
MillenniummillenniumSecond3.1709792E-13
MicrosecondµsSecond1000000
NanosecondnsSecond1000000000
PicosecondpsSecond1000000000000
FemtosecondfsSecond1000000000000000
AttosecondasSecond1000000000000000000
ShakeshakeSecond1.0E+8
Month (synodic)month (synodic)Second3.91357417E-7
Year (Julian)year (Julian)Second3.1709792E-8
Year (leap)year (leap)Second3.16438356E-8
Year (tropical)year (tropical)Second3.1699034E-8
Year (sidereal)year (sidereal)Second3.1701654E-8
Day (sidereal)day (sidereal)Second1.1574074E-5
Hour (sidereal)h (sidereal)Second0.0002777778
Minute (sidereal)min (sidereal)Second0.0166666667
Second (sidereal)second (sidereal)Second1.003),2695602
FortnightfortnightSecond8.2671957E-7
SeptennialseptennialSecond4.5267494E-9
OctennialoctennialSecond3.968253968E-10
NovennialnovennialSecond3.5271323E-11
QuindecennialquindecennialSecond2.1179159E-10
QuinquennialquinquennialSecond6.3404355E-9
Planck TimePlanck timeSecond1.8507425E+43

Conversion Examples

Example 1: Converting Minutes to Hours

Given: 90 minutes

Objective: Convert to hours [h]

Steps:
  1. Identify the Starting Unit: Minutes (min)
  2. Find the Conversion Factor:
    • 1 min = 60 s
    • 1 h = 3600 s
    1 min = 60 s
    1 h = 3600 s
  3. Convert Minutes to Seconds:
    90 min × 60 s/min = 5400 s
  4. Convert Seconds to Hours:
    5400 s ÷ 3600 s/h = 1.5 h

Result: 90 min = 1.5 h

Example 2: Converting Days to Seconds

Given: 2 days

Objective: Convert to seconds [s]

Steps:
  1. Identify the Starting Unit: Days (d)
  2. Find the Conversion Factor:
    • 1 d = 86400 s
    1 d = 86400 s
  3. Multiply the Starting Value by the Conversion Factor:
    2 d × 86400 s/d = 172800 s

Result: 2 d = 172800 s


Practical Tips for Unit Conversion

  • Use Precise Conversion Factors: Ensure accuracy by using exact conversion factors, especially in scientific and engineering calculations.
  • Maintain Consistent Units: When performing calculations involving multiple units, ensure all units are appropriately converted to maintain consistency.
  • Understand the Relationship Between Units: Familiarize yourself with how different time units relate to each other, particularly between SI and non-SI systems.
  • Reference Reliable Sources: Always verify conversion factors using trusted references or official standards.
  • Utilize Technology: Leverage calculators or software tools to handle complex conversions and minimize manual errors.
  • Practice with Examples: Reinforce your understanding by working through various conversion scenarios.

Common Pitfalls and How to Avoid Them

  1. Incorrect Conversion Factors:
    • Solution: Always cross-check conversion factors with reliable sources before performing calculations.
  2. Misalignment of Units:
    • Solution: Ensure that numerator and denominator units are consistently converted to maintain dimensional integrity.
  3. Ignoring Unit Prefixes:
    • Solution: Pay attention to unit prefixes (e.g., kilo-, centi-, milli-) as they significantly affect conversion factors.
  4. Rounding Errors:
    • Solution: Carry sufficient decimal places during intermediate steps and round only the final result as needed.
  5. Confusing Similar Units:
    • Solution: Clearly distinguish between units such as s, ms, min, h, d, etc., to avoid mixing them up.
  6. Assuming Non-Standard Units are Equivalent:
    • Solution: Verify the equivalence of less common units before performing conversions.