Semester Hours vs Quarter Hours: How Credits Convert

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Semester hoursQuarter hours1 semester hour = 1.5 quarter hours

Semester hours vs quarter hours: converting our credits

Multiply by 1.5: one semester hour equals 1.5 quarter hours at the University of Washington, Oregon State and the University of Denver, and UW Bothell converts the other way by multiplying quarter credits by two-thirds. UPI Study's credit recommendations are all in semester hours, so at that rate a 3-credit course comes to 4.5 quarter hours and a 4-credit course, such as Calculus 1, to 6. Your college applies its own rule, so check its registrar's page.

What UPI Study's credits are

Semester hours

Semester-calendar colleges award semester credit. Oregon State puts a bachelor's at a semester school at usually 120 semester hours.

NCCRS lists every UPI Study course in semester hours

Quarter-system colleges

Quarter hours

The University of Washington and Oregon State award quarter credits; Oregon State puts the same bachelor's at 180 quarter credits.

1 semester hour = 1.5 quarter hours

1 semester hour
1.5 quarter hours
1 quarter hour
Two-thirds of a semester hour
UPI Study's credits
Semester hours (NCCRS)

1, 2, 3 and 4 credits: one course each

Side by side

UPI Study's semester hours at the 1.5 rate
 Semester hoursQuarter hours
Chemistry Lab, Physics Lab11.5
Anatomy and Physiology I and 2 Labs23
Most courses, such as Intro to Psychology34.5
Calculus 1, 2 and 3, Discrete Mathematics46
A bachelor's degree (Oregon State)120180
Junior standing at UCLA6090

The University of Washington's own words: "To convert semester to quarter credits, multiply by 1.5." The University of Denver adds that other formulas apply when a college follows neither a standard quarter nor a semester calendar. Every UPI Study course is self-paced and online.

What it means for you

Heading to a quarter-system college

  • Multiply our semester hours by 1.5
  • Calculus 1, at 4 semester hours, comes to 6 quarter hours
  • Ask how it fits your degree's quarter-credit total

Heading to a semester college

  • No conversion: our credits are already semester hours
  • A 3-credit course stays 3
  • Ask which requirement each course meets

Questions, answered

How many quarter hours is a 3-credit course?

4.5, at the 1.5 rate the University of Washington, Oregon State and the University of Denver publish. Oregon State says it plainly: “A 3 semester credit class is equivalent to 4.5 quarter credits.” Most UPI Study courses carry an NCCRS recommendation for 3 semester hours.

How do I convert quarter credits to semester credits?

Multiply by two-thirds. UW Bothell, a quarter-system campus: “To convert quarter credits to semester credits, multiply by two-thirds.” So 45 quarter credits make 30 semester credits. The University of Denver notes that other formulas apply when a college follows neither a standard quarter nor a semester calendar.

Are UPI Study credits semester hours or quarter hours?

Semester hours. NCCRS lists every UPI Study recommendation in semester hours: 1 for Chemistry Lab and Physics Lab, 2 for each Anatomy and Physiology Lab, 3 for most courses and 4 for Calculus 1, 2 and 3 and Discrete Mathematics. A quarter-system college turns them into its own quarter credits.

Is a quarter-system degree more work than a semester one?

No. Oregon State puts a bachelor's at a semester school at usually 120 semester hours against 180 quarter credits on the quarter system: “So you are doing the same amount of work – it is just divided up in a different way.”

How many quarter credits is Calculus 1?

Calculus 1 (Math 165) carries an NCCRS recommendation for 4 semester hours, which is 6 quarter hours at the 1.5 rate. Calculus 2, Calculus 3 and Discrete Mathematics carry 4 semester hours too.

Do lab credits convert the same way?

Yes, at the same rate. Chemistry Lab and Physics Lab carry 1 semester hour each (1.5 quarter hours), and each Anatomy and Physiology Lab carries 2 (3 quarter hours). Each is a set of virtual labs done online; see lab vs non-lab science credit for what counts as a lab.

How many quarter credits make me a junior?

It depends on the college. UCLA lists junior-level standing for transfer applicants as 60 semester or 90 quarter units completed, and UW Bothell counts a junior from 90 to 134 quarter credits.

Will a quarter-system college take my UPI Study credits?

ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities. Search your school in Find My College and ask the registrar how many quarter credits each course would post as.

Where these credits can go

ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities.

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  • American College of Education logo
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Plus many more partner colleges and ACE and NCCRS cooperating colleges.

Find My College →

Keep exploring

Check your college first

ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities.

Sources (6)

UPI Study facts are from our course catalog, syllabi and course rules.