Multi-Scale GPA Calculator
Universal GPA calculator across US 4.0, US 4.33, 5.0 weighted (AP/honors), UK/India percentage, Singapore NUS CAP (0-5), and HKU 4.3 scales. Dynamic course rows, cumulative GPA across semesters, target-GPA reverse calc, full letter-grade conversion table.
GPA Calculator
Grading scale
Courses this semester
Prior cumulative (optional — for multi-semester GPA)
Target GPA (optional — reverse calc)
To reach your target cumulative GPA
Letter-grade conversion — active scale
How to use the GPA Calculator
Pick the right grading scale
The scale your school uses is the single most important input. US universities: almost always 4.0 or 4.33 (check whether your school awards A+). US high schools: weighted 5.0 for AP/honors classes, unweighted 4.0 for regular. UK / India / Australia: percentage. Singapore (NUS, NTU): CAP 0-5. Hong Kong (HKU): 4.3 scale. Pick wrong and the number is meaningless — a 4.0 in the US ≠ a 4.0 in NUS CAP.
Enter each course with credit hours and grade
Credit hours weight the GPA — a 4-credit Calculus course counts more than a 1-credit lab. US standard is 3 credits per semester-long course; UK uses credit-equivalents (typically 15-30 per module). Add or remove course rows with the buttons. The hero number updates live as you change grades — useful for "what if I get a B in Stats?" scenarios.
Add prior cumulative for multi-semester tracking
Enter your prior cumulative GPA (from your transcript) and prior credits earned. The tool then weights this semester correctly against your accumulated record. A 4.0 semester moves a 3.0 cumulative very slowly if you've already completed 90 credits — math, not effort, dictates how fast a cumulative GPA shifts.
Set a target GPA for reverse-math
Enter a target cumulative GPA (e.g. 3.50 for cum laude, 3.70 for magna, 3.90 for summa) and remaining credits in your degree. The tool computes the average GPA you'd need across all remaining semesters to hit the target. If it returns above the scale max, the target is mathematically unreachable — useful early-warning information.
GPA, CAP, Honours classes — one transcript, many languages
There is no global grading currency. A student finishing a degree in Singapore writes "CAP 4.50" on a CV. A student finishing in the UK writes "2:1 (Upper Second-Class Honours)". A student finishing in the US writes "GPA 3.7". A student finishing in India writes "75%". These four students may have done essentially equivalent work — but the moment any of them applies for a job, scholarship, or graduate programme in a different country, the receiving institution has to do a translation. That translation is messy, often wrong, and frequently decided by an admissions officer with three minutes and a conversion chart of dubious provenance. Understanding what your own number means in your own system — and roughly what it looks like in the systems you might one day enter — is one of the highest-leverage pieces of administrative knowledge a student can hold.
The US 4.0 GPA system — the default global benchmark
The US 4.0 GPA is the most globally portable academic number, mostly because the US has the highest density of graduate programmes and employers that ask for it. Mechanically: each letter grade maps to a numeric point (A=4.0, B=3.0, C=2.0, D=1.0, F=0), the points are multiplied by the credit hours of the course, summed, and divided by total credits. Most US schools use the "+/−" extension — A− = 3.7, B+ = 3.3, and so on — which gives finer resolution. Some schools award A+ = 4.33, producing maxima slightly above 4.0; most do not. Letter grades on a four-point scale trace back to Mount Holyoke College in 1897 (Schinske & Tanner, 2014) and spread through US higher education in the early 20th century. Latin honors thresholds are set by each school on this scale; 3.50 / 3.70 / 3.90 for cum laude / magna / summa is a common pattern, not a rule.
The UK Honours classification — degrees, not GPAs
The UK does not use GPAs for undergraduate degrees. Instead, final classification falls into four bands: First-Class Honours (1st) = 70%+, Upper Second (2:1) = 60-69%, Lower Second (2:2) = 50-59%, and Third-Class (3rd) = 40-49%. A 2:1 is the de facto cut-off for "good degree" in UK employer terms — most graduate schemes and competitive professional programmes require 2:1 or above. The percentage thresholds feel low to American students because UK marking conventions place the top band at 70 rather than 90 — the numbers are on a different scale, not a lower standard. Some UK institutions have piloted GPAs alongside the traditional bands to ease international transferability, but the classification remains the official result.
Your GPA is a number that opens or closes doors for the first 5 years of your career. After that, it's a forgotten footnote. The same is true in every country — high school in Singapore, college in the US, university in the UK.
The Indian percentage system — and its conversion problem
Indian universities historically marked everything as a raw percentage out of 100. 60%+ was considered First Class, 50-60% Second, 40-50% Third, below 40% Fail. CBSE board exams, IIT JEE, JNU, Delhi University — all percentage-native. The conversion to US 4.0 is where things get awkward: credential evaluators such as WES (World Education Services) publish their own mapping tables, and a mechanical percentage-to-GPA mapping tends to understate a degree marked on a tougher curve. Many Indian institutions now report a CGPA on a 10-point scale instead, which is at least a like-for-like number. This tool's percentage option applies one common band mapping (shown in the table below the results); it is a convenience, not an official conversion.
Singapore NUS CAP and the ASEAN scale zoo
Singapore's two flagship universities, NUS and NTU, both use the Cumulative Average Point (CAP) system on a 0-5 scale. A=5.0, A−=4.5, B+=4.0, B=3.5, B−=3.0, C+=2.5, C=2.0, D=1.0, F=0. The Singapore Honours classification rides on top of this: Honours with Highest Distinction (CAP 4.50+), Honours with Distinction (CAP 4.00-4.49), Honours with Merit (CAP 3.50-3.99), Honours (CAP 3.00-3.49). This is the modern restyling of the old British "First / 2:1 / 2:2" classes — NUS renamed them in 2015, keeping the same cut-offs, and its transcripts now call the figure a Grade Point Average (GPA), "formerly known as Cumulative Average Point (CAP)". The rest of the region is more varied: four-point scales are common, but some Philippine institutions use an inverted scale where 1.00 is the best grade and 5.00 is failing — easy to mistranslate — and Hong Kong's HKU uses a 4.3 scale (A+ = 4.3) under its 2012 curriculum. For students crossing borders within ASEAN — and there are a lot of them — knowing what your GPA looks like in someone else's currency is genuinely useful.
Letter grades began at Mount Holyoke in 1897, and NUS now calls its CAP a GPA
The letter-grade scale is usually traced to Mount Holyoke College in 1897 (Schinske & Tanner, CBE—Life Sciences Education 2014) and spread through US higher education in the early 20th century. Before that, US schools used everything from descriptive grades to raw percentages.
Brown University, Reed College, MIT (for first-year students), and Hampshire College famously do not report GPAs at all. Brown uses a credit-no-credit option that hides grades from the transcript entirely if the student chooses.
Latin honors thresholds at most US universities: cum laude = GPA 3.50, magna cum laude = 3.70, summa cum laude = 3.90. Some institutions award them by class-rank percentile instead of a fixed GPA cut-off, so the same GPA can be summa at one school and unclassified at another.
NUS's Honours classes — Honours, Honours (Merit), Honours (Distinction), Honours (Highest Distinction) — replaced the British Third / 2:2 / 2:1 / First names in 2015 with the same cut-offs: 3.00 / 3.50 / 4.00 / 4.50 on the 0–5 scale (NUS transcript grade legend).
Harvard grade inflation: in December 2013 the Dean of Undergraduate Education told the faculty that the median undergraduate grade was A− and the most frequently awarded grade was A (reported in The Harvard Crimson).
GPA-to-percentage conversion is famously unreliable. WES (World Education Services), the standard credential evaluator for US graduate-school applications, applies conversions that often disadvantage students from tougher-grading systems (UK, India, parts of Europe).
A UK First-Class degree (1st) requires 70%+. This sounds low to American students, but the UK percentage scale is simply calibrated differently — its top band starts at 70, not 90 — so the two numbers cannot be compared directly.
The Philippines university system contains both standard 4.0 GPAs and inverted scales (where 1.00 is the highest grade and 5.00 is failing). Students transferring across institutions in-country must explicitly state which system their transcript uses.
Weighted vs unweighted high-school GPA in the US: weighted scales (5.0 max) reward AP, IB, and honors classes with an extra grade point — letting an exceptional student finish high school with a 4.5 or even higher. Most US universities recalculate to unweighted 4.0 for admissions.
HKU's 4.3 scale (A+ 4.3, A 4.0, A− 3.7 … F 0) applies under its 2012 four-year curriculum regulations. The 0.3 at the top end matters when a 4.3-scale GPA is read by a 4.0-scale admissions office.
Frequently Asked Questions
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Use the scale your transcript uses — that's the only number that matters for official purposes. US college: 4.0 (or 4.33 if your school awards A+). US high school: weighted 5.0 for AP/honors students, unweighted 4.0 otherwise. UK / India / Australia: percentage. Singapore (NUS, NTU, SMU): NUS CAP 0-5. Hong Kong (HKU, CUHK): 4.3. If you're converting between systems for grad-school applications, run it in both scales and report whichever matches the receiving institution's documents.
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On the US 4.0 scale, 3.0 is the conventional "good enough" benchmark — it's the cut-off most graduate programmes screen on, the minimum for many honor societies, and the typical "minimum to apply" for competitive internship and graduate scheme programmes. But it's not "outstanding" — that's 3.5+ (cum laude territory) and 3.7+ (magna). For employers, a 3.0 is rarely a differentiator; for selective grad schools, 3.5+ is increasingly the real cut-off despite the official 3.0 minimum.
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There is no official conversion. Scaling the 5-point maximum to 4 (divide by 1.25: 5.0 → 4.0, 4.5 → 3.6, 4.0 → 3.2) is pure arithmetic and ignores that the two scales assign letters differently. For US graduate applications, NUS transcripts carry a grade legend explaining the GPA (formerly CAP), and credential evaluators such as WES apply their own tables. Use this calculator's scale switch for a side-by-side view of where you'd land on each.
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There is no official mapping. Credential evaluators (WES and others) publish their own tables and receiving universities differ, so ask the institution you are applying to which one it uses. Be cautious with any mechanical percentage-to-GPA mapping: the UK's top band starts at 70, so feeding a 2:1's 60–69% into a US percentage table understates it badly. The percentage scale in this tool is one common mapping, not a ruling on your degree.
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Each course's grade point gets multiplied by its credit hours. A 4-credit Calculus class with an A (4.0 × 4 = 16 points) counts more than a 1-credit lab with an A (4.0 × 1 = 4 points). The sum of all grade-points divided by the sum of all credits gives the weighted average. This means a single bad grade in a high-credit course hurts more than the same bad grade in a low-credit elective — the math is unforgiving.
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It computes the average GPA you'd need across your remaining semesters to hit a cumulative target. Useful for: "I want to graduate cum laude (3.50) — what do I need to average over the next 30 credits?" If the tool tells you the required GPA is above the scale maximum (e.g. 4.2 on a 4.0 scale), the target is mathematically unreachable from where you are — better to know early than discover it in senior year.
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No. By the time you have a university transcript, your high-school GPA is effectively invisible. Even your college GPA fades fast — by year 3-5 of your career, employers look at work experience and skills first. The honest research consensus: GPA matters most for your first job out of school and for graduate-school applications. After that, it's a footnote on the CV that recruiters rarely re-read.
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Unweighted: all courses use the standard 4.0 scale, so the highest possible GPA is 4.0. Weighted: AP, IB, and honors courses get an extra grade point (A=5.0 instead of 4.0), letting exceptional students finish high school with weighted GPAs of 4.3, 4.5, or higher. Most US universities recalculate to unweighted for admissions decisions — but report weighted GPAs alongside class rank when applying so the admissions office sees the full picture.
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Grade inflation = average grades drifting upward over time without underlying improvement in student work. Harvard's median grade is now A−; the most-awarded grade is A. Yale, Brown, Stanford show similar trends. The practical effect: a 3.7 GPA today doesn't signal what a 3.7 GPA signalled in 1990. Selective grad schools and elite employers adjust internally — they know which institutions inflate and discount accordingly. Public-university grade inflation has been slower but is also real.
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No. All calculation happens entirely in your browser via JavaScript. Open DevTools → Network and watch — there is zero outbound traffic. Your course names, credit hours, grades, prior GPA, and target numbers never leave your device.
Method & sources
How it computes
GPA = Σ(grade points × credits) ÷ Σ credits for the semester; cumulative GPA folds in a prior GPA weighted by prior credits; the target panel solves for the average GPA needed over the remaining credits. Grade-point tables: US 4.0 and 4.33 plus/minus scales, a 5.0 weighted high-school scale, NUS 0–5 (A+/A 5.0, A− 4.5, B+ 4.0, B 3.5, B− 3.0, C+ 2.5, C 2.0, D+ 1.5, D 1.0, F 0), HKU 4.3 (A+ 4.3, A 4.0, A− 3.7 …), and a percentage-band mapping that is a convenience, not an official conversion.
What this tool implements
- Credit-weighted mean of grade points; cumulative = (prior GPA × prior credits + semester points) ÷ total credits; required = (target × total credits − earned points) ÷ remaining credits.
- NUS grade points and Honours classes per the NUS transcript grade legend: Honours (Highest Distinction) ≥ 4.50, (Distinction) 4.00–4.49, (Merit) 3.50–3.99, Honours 3.00–3.49; NUS calls the figure GPA, formerly CAP.
- HKU 4.3 scale per HKU's grading system (2012 four-year curriculum): A+ 4.3, A 4.0, A− 3.7, B+ 3.3 … F 0.
- US 4.0 / 4.33 plus-minus conventions (A− 3.7/3.67, B+ 3.3/3.33 …); the percentage row maps UK/India/Australia bands to 4.0-scale points as one common approximation, labelled as such.
Sources
- National University of Singapore, Office of the Registrar. Transcript Information — Grade Legend (grade points; GPA formerly known as CAP; Honours classification cut-offs): https://www.nus.edu.sg/registrar/docs/default-source/administrati…
- The University of Hong Kong, Academic Advising and Scholarships Office. Examination and Assessment — grading system (A+ 4.3 … F 0): https://aas.hku.hk/exa-and-ass/
- Schinske J, Tanner K. Teaching More by Grading Less (or Differently). CBE—Life Sciences Education 2014;13(2):159-166 (history of letter grades, Mount Holyoke 1897).
- Johns Hopkins University School of Nursing — Grading Policy (US plus/minus letter-to-point table): https://e-catalogue.jhu.edu/nursing/policies/grading/
What can make this go out of date
- none at runtime
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