How is the Waterloo average calculated?

Waterloo calculates a weighted average percentage: Average (%) = Σ(Course Grade × Course Units) ÷ Σ(Course Units). Each grade is weighted by the number of units the course carries, so a 0.50-unit lecture counts twice as much as a 0.25-unit lab. The standard Waterloo course is worth 0.50 units.

What is the 32% rule at Waterloo?

When Waterloo calculates averages used for promotion and awards, any course grade below 32% is treated as 32%. This 32% minimum floor only affects the average calculation — the actual failing grade still appears on the transcript and the course is still a failure.

What are the Waterloo academic standings?

Academic standing is based on your cumulative average and is decided at the end of each term. A common faculty scale is: Excellent for a cumulative average of 80% or higher, Good for 70–79.9%, and Satisfactory for 60–69.9%. Exact thresholds vary by faculty and academic plan, so check the Undergraduate Calendar for your program.

University of Waterloo GPA Calculator & Percentage Average

Q: What grading system does the University of Waterloo use?

The University of Waterloo uses a numerical grading system on a scale from 0 to 100% in all faculties. Transcripts report percentage grades — Waterloo does not compute or print a GPA. A passing grade in undergraduate courses is 50% or higher, and the highest grade assigned in any course is 100%.

Q: How do I convert a Waterloo percentage to a 4.0 GPA?

Waterloo does not issue a GPA, but external bodies convert percentages using the OMSAS 4.0 scale: 90–100% = 4.0, 85–89% = 3.9, 80–84% = 3.7, 77–79% = 3.3, 73–76% = 3.0, 70–72% = 2.7, 67–69% = 2.3, 63–66% = 2.0, 60–62% = 1.7, 57–59% = 1.3, 53–56% = 1.0, 50–52% = 0.7, and below 50% = 0.0. OMSAS converts each course first, then weights — never convert your final average directly.

Q: What average do Waterloo graduate students need?

Graduate students at Waterloo must obtain an average of at least 70% in the set of courses presented toward a graduate degree. Some departments require higher program averages or higher individual course grades.

About

Waterloo & Its Percentage Grading System

The University of Waterloo (UWaterloo), founded in 1957 in Waterloo, Ontario, is one of Canada's leading research universities, best known for its co-op programs and its faculties of Mathematics, Engineering, and Computer Science. Unlike universities that use a letter-based GPA, Waterloo grades every course on a numerical 0–100% scale in all faculties. Official transcripts report percentages — Waterloo does not compute or print a GPA. When a 4.0-scale GPA is needed (for graduate school, U.S. applications, or medical school via OMSAS), the receiving body converts your percentages using a standard conversion table.

Tool 1

UWaterloo Weighted Average & GPA Calculator

Enter each course with its percentage grade (as shown on your Waterloo transcript) and its course units. The tool returns your weighted average percentage — Waterloo's primary metric — plus the equivalent OMSAS 4.0 GPA for external applications.

Add Your Courses

Waterloo grades on a 0–100% scale. The standard course is worth 0.50 units; a half-credit lab is 0.25 units.

Course / Subject

Grade (%)

Course Units

Apply Waterloo's 32% minimum-average rule (grades below 32% count as 32% in the average)

Course	Grade (%)	Units	Actions

Convert a Single Grade →

The Math

How the Waterloo Average Is Calculated

Waterloo weights each course grade by its unit value, then divides by the total units attempted.

Waterloo Weighted Average

\[ \text{Average (\%)} = \frac{\displaystyle\sum (\text{Grade} \times \text{Units})}{\displaystyle\sum \text{Units}} \]

GradeNumerical percentage (0–100) earned in the course

UnitsUnit value of the course (standard = 0.50)

📝 Worked Example

Suppose a student completes 5 courses with the following grades and units:

Course	Grade (%)	Units	Grade × Units
Course 1	88	0.50	88 × 0.50 = 44.0
Course 2	76	0.50	76 × 0.50 = 38.0
Course 3	92	0.50	92 × 0.50 = 46.0
Course 4	69	0.25	69 × 0.25 = 17.25
Course 5	81	0.50	81 × 0.50 = 40.5
Total	—	2.25	185.75

Plugging into the formula:

\[ \text{Average} = \frac{185.75}{2.25} \approx \mathbf{82.6\%} \]

Converting each course to the OMSAS scale first and then weighting by units gives this student an equivalent GPA of about 3.5 / 4.0. Converting the 82.6% average directly would wrongly suggest 3.7 — which is exactly why OMSAS always converts each course before averaging.

Tool 2

Waterloo Percentage to 4.0 GPA Converter

Convert a single Waterloo percentage grade to its 4.0-scale equivalent using the official OMSAS conversion table.

Convert Percentage → GPA

Enter any Waterloo grade between 0 and 100%.

Your Waterloo Grade (%)

About the Conversion

Because Waterloo reports percentages rather than a GPA, there is no single "official" Waterloo GPA. The most widely used conversion is the OMSAS 4.0 scale (Ontario Medical School Application Service), which many graduate and professional programs also reference.

Important: OMSAS converts each course grade to a GPA value first, then weights by units. Converting your already-averaged percentage gives only an approximation — for an exact GPA, convert each course individually using Tool 1.

Reference

Waterloo Grading & Conversion Scales

Percentage bands with their OMSAS 4.0 equivalents, plus Waterloo's non-numeric grade notations.

📘 Percentage → OMSAS 4.0 GPA

Conversion used for external applications (graduate school, OMSAS, U.S. programs).

Percentage	OMSAS GPA	Letter Equivalent	Quality
90–100	4.0	A+	Excellent
85–89	3.9	A	Excellent
80–84	3.7	A−	Excellent
77–79	3.3	B+	Good
73–76	3.0	B	Good
70–72	2.7	B−	Good
67–69	2.3	C+	Satisfactory
63–66	2.0	C	Satisfactory
60–62	1.7	C−	Satisfactory
57–59	1.3	D+	Marginal
53–56	1.0	D	Marginal
50–52	0.7	D−	Marginal (pass)
0–49	0.0	F	Fail

Letter equivalents are approximate; Waterloo transcripts show only the numeric percentage. 50% is the minimum passing grade for undergraduate courses.

🎓 Non-Numeric Grades & Notations

Special grades that may appear on a Waterloo transcript.

Code	Meaning	Effect on Average
CR	Credit granted	Not included in any average
NCR	No credit granted	Not included in any average
INC	Incomplete (work handed in late by agreement)	No numeric value (until resolved)
FTC	Failure to complete an INC agreement	Calculated as 32%
NMR	No mark recorded (no work submitted)	Calculated as 32%
DNW	Did not write the final exam	Calculated as 32%
MM	Missing mark (not yet received)	No numeric value

The 32% rule also applies to any numeric grade below 32%: it is counted as 32% when calculating averages for promotion and awards, although the real grade remains on the transcript.

Got Questions?

Waterloo GPA — Frequently Asked Questions

What grading system does the University of Waterloo use?

Waterloo grades every course on a numerical 0–100% scale across all faculties. Transcripts report percentages — there is no GPA printed. A passing undergraduate grade is 50%, and the highest grade assigned in any course is 100%.

How is my Waterloo average calculated?

Waterloo uses a weighted average: Average = Σ(Grade × Units) ÷ Σ(Units). Each grade is weighted by the course's unit value, so a 0.50-unit lecture counts twice as much as a 0.25-unit lab.

What is the 32% rule?

When Waterloo computes averages for promotion and awards, any grade below 32% is treated as 32%. This minimum floor only affects the average — your real failing grade still appears on the transcript and the course is still a failure. Tick the toggle in Tool 1 to apply it.

How do I convert a Waterloo percentage to a 4.0 GPA?

Waterloo doesn't issue a GPA, but external bodies use the OMSAS 4.0 scale: 90–100% = 4.0, 85–89% = 3.9, 80–84% = 3.7, and so on down to below 50% = 0.0. OMSAS converts each course first, then weights by units — never convert your final average directly.

What average do graduate students need at Waterloo?

Graduate students must achieve an average of at least 70% across the courses presented toward a graduate degree. Some departments set higher program or per-course requirements.

Can I calculate my cumulative average mid-program?

Yes. Add every course you've completed so far in Tool 1, and the result is your cumulative weighted average based on the units you've earned to date.

Reference: Grading data verified against the University of Waterloo Registrar's Office transcript legend and the Undergraduate Studies Academic Calendar. The 4.0 conversion follows the OUAC / OMSAS Undergraduate Grade Conversion Table.