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1.5 hours vs 1.5 hour

Both "1.5 hours" and "1.5 hour" are correct, but they are used in different contexts. "1.5 hours" is used when referring to a duration of time that is more than one hour, while "1.5 hour" is used when referring to a duration of time that is exactly one hour and a half.

Last updated: March 22, 2024 • 2860 views

This phrase is correct and commonly used in English when referring to a duration of time that is more than one hour.

"1.5 hours"

Use "1.5 hours" when referring to a duration of time that is one hour and thirty minutes or more.

Examples:

  • The meeting lasted for 1.5 hours.
  • She worked out for 1.5 hours at the gym.
  • Aqueous humour concentrations declined with a half-life of approximately 1.5 hours.
  • The average half-life is of about 1.5 hours.
  • In healthy young men, an oral 3 mg dose decreases acetylcholinesterase (AChE) activity in CSF by approximately 40% within the first 1.5 hours after administration.
  • In healthy young men, an oral 3 mg dose decreases acetylcholinesterase (AChE) activity in CSF by approximately 40% within the first 1.5 hours after administration.
  • The mean half-life of abacavir is about 1.5 hours.
  • Stiripentol is quickly absorbed, with a time to peak plasma concentration of about 1.5 hours.
  • Loratadine and DL achieve maximum plasma concentrations (Tmax) between 1- 1.5 hours and 1.5- 3.7 hours after administration, respectively.
  • Plasma elimination half-life for trimethoprim in poultry is less than 1 hour and that of sulfamethoxazole, approximately 1.5 hours.
  • Absorption Lenalidomide, in healthy volunteers, is rapidly absorbed following oral administration with maximum plasma concentrations occurring between 0.625 and 1.5 hours post-dose.
  • Plasma concentrations decline rapidly and the elimination half-life of nateglinide typically averaged 1.5 hours in all studies of Starlix in volunteers and type 2 diabetic patients.
  • Serum concentrations appear after a median lag time of 0.25 hours (range 0 to 1.5 hours).
  • The distribution half-life was approximately 1.5 hours; the route of excretion is essentially renal with 41% of the radiolabel excreted in urine over the first 24 hours after administration.
  • After oral administration to adult patients, TMZ is absorbed rapidely, with peak concentrations reached as early as 20 minutes post-administration (mean time between 0.5 and 1.5 hours).
  • Following oral administration, the mean time (tmax) to maximal serum concentrations of abacavir is about 1.5 hours for the tablet formulation and about 1.0 hour for the solution formulation.
  • This will take at least 1.5 hours for the maintenance dose and 3 hours for the loading dose.
  • Absorption Following subcutaneous administration, meloxicam is completely bioavailable and maximal mean plasma concentrations of 0.73 µg/ ml in dogs and 1.1 µg/ ml in cats were reached approximately 2.5 hours and 1.5 hours post administration, respectively.
  • Length of visit: approx. 1.5 hours.
  • After oral administration, maximum plasma concentrations (Cmax) of ambrisentan typically occur around 1.5 hours post-dose under both fasted and fed conditions.
  • maximum plasma concentrations (Tmax) between 1- 1.5 hours and 1.5- 3.7 hours after administration, respectively.
  • Subsequent to an intramuscular injection of 1 g of ceftriaxone the serum concentration amounted to 79.2 µg/ ml after 1.5 hours, and afterwards 58.2, 35.5 and 7.8 µg/ ml at the respective time-points 4, 12 and 24 hours after injection.

Alternatives:

  • 1.5 hours and 30 minutes
  • 1 hour and 30 minutes
  • 1 hour and a half
  • 90 minutes
  • an hour and a half

This phrase is correct and commonly used in English when referring to a duration of time that is exactly one hour and a half.

"1.5 hour"

Use "1.5 hour" when referring to a duration of time that is exactly one hour and thirty minutes.

Examples:

  • The movie lasted for 1.5 hour.
  • He took a 1.5 hour nap.
  • It undergoes first-pass metabolism in the liver and other enteric organs, and reaches a peak plasma concentration of approximately 2.4 ng/ml CV 41% (after administration of two Activelle tablets) within 0.5 -1.5 hour.
  • Loratadine and DL achieve maximum plasma concentrations (Tmax) between 1- 1.5 hours and 1.5- 3.7 hours after administration, respectively.
  • Ben thinks we have about 1.5 hours till the baby wakes up.
  • Absorption: entecavir is rapidly absorbed with peak plasma concentrations occurring between 0.5-1.5 hours.
  • Aqueous humour concentrations declined with a half-life of approximately 1.5 hours.
  • The average half-life is of about 1.5 hours.
  • The mean half-life was 0.75 to 1.5 hours in patients.
  • The mean half-life of abacavir is about 1.5 hours.
  • Stiripentol is quickly absorbed, with a time to peak plasma concentration of about 1.5 hours.
  • Plasma elimination half-life for trimethoprim in poultry is less than 1 hour and that of sulfamethoxazole, approximately 1.5 hours.
  • It is rapidly absorbed; peak serum levels are achieved 1 to 1.5 hours after ingestion.
  • Absorption Lenalidomide, in healthy volunteers, is rapidly absorbed following oral administration with maximum plasma concentrations occurring between 0.625 and 1.5 hours post-dose.
  • In healthy young men, an oral 3 mg dose decreases acetylcholinesterase (AChE) activity in CSF by approximately 40% within the first 1.5 hours after administration.
  • In healthy young men, an oral 3 mg dose decreases acetylcholinesterase (AChE) activity in CSF by approximately 40% within the first 1.5 hours after administration.
  • Serum concentrations appear after a median lag time of 0.25 hours (range 0 to 1.5 hours).
  • The distribution half-life was approximately 1.5 hours; the route of excretion is essentially renal with 41% of the radiolabel excreted in urine over the first 24 hours after administration.
  • The mean time to maximal serum concentrations (tmax) is about 1.5 hours and 1.0 hour for abacavir and lamivudine, respectively.
  • After oral administration to adult patients, TMZ is absorbed rapidely, with peak concentrations reached as early as 20 minutes post-administration (mean time between 0.5 and 1.5 hours).
  • Plasma concentrations decline rapidly and the elimination half-life of nateglinide typically averaged 1.5 hours in all studies of Starlix in volunteers and type 2 diabetic patients.
  • Following oral administration, the mean time (tmax) to maximal serum concentrations of abacavir is about 1.5 hours for the tablet formulation and about 1.0 hour for the solution formulation.

Alternatives:

  • 1 hour and 30 minutes
  • 1 hour and a half
  • 90 minutes
  • an hour and a half
  • one and a half hours

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