There’s no single official exchange rate between US credits and ECTS, and the ECTS grade scale was never really about your raw score in the first place.
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ECTS Converter
Convert between US credit hours and European ECTS credits, work out ECTS from your actual weekly study hours, or find your cohort-rank ECTS grade letter.
Since 2015, official ECTS guidance recommends institutions publish their own grade distribution tables rather than applying this fixed A-E scale universally. This calculator uses the original, still widely-referenced statistical bands, check whether your institution has since replaced them with its own table.
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There is no single official conversion ratio
60 ECTS credits represent one full academic year of study (roughly 1,500 to 1,800 total study hours, under European Commission guidance), and a typical US bachelor's year runs about 30 semester credit hours. Divide those and you get the widely-used 2:1 ratio this calculator defaults to, but individual institutions set their own official conversion policy, some use 1.5:1 instead, and a calculator result is never a substitute for your actual institution's published equivalency table or a formal Learning Agreement.
The hours method, when you don't have a US credit figure at all
Not every grading system maps cleanly onto "US credit hours", so the From Hours mode works from the one thing the ECTS definition is actually built on: total study workload. One ECTS credit represents roughly 25 to 30 hours of total study time, lectures plus the self-study, reading and assignment work around them, with most institutions in practice using 30. Multiply your weekly lecture and self-study hours by the number of weeks in the term, divide by 30, and that's your ECTS figure for that course, no US-specific conversion needed at all.
Why the grade converter asks for your class rank, not a percentage
The ECTS A-E scale was originally defined by where you rank against your specific cohort, top 10% is an A, the next 25% a B, and so on, not by a raw percentage score, which is why this tool asks for your rank and class size rather than a mark out of 100. A percentage-to-letter table would need to invent thresholds no single source actually publishes, since that mapping genuinely varies by institution and course; a rank-based conversion is the one calculation the original definition actually supports.
ECTS converter FAQ
How many ECTS credits is one US credit hour?
The most commonly used ratio is 2 ECTS credits per 1 US credit hour, based on 60 ECTS representing a full academic year against roughly 30 US semester credit hours for the same year. It's a widely used convention, not a single universal standard, some institutions apply 1.5:1 instead.
Is there an official ECTS to US credit conversion ratio?
No single global ratio is binding on every institution. Each university sets and publishes its own conversion policy for formal credit transfer, and a study-abroad or exchange agreement's official Learning Agreement, not a calculator, is what actually determines credit recognition.
How do I calculate ECTS from my actual study hours?
Add your weekly lecture hours to your weekly self-study hours, multiply by the number of weeks in the term, then divide by 30, since one ECTS credit represents roughly 25 to 30 hours of total study workload, and 30 is the figure most institutions use in practice. This works even when you have no US-credit figure to convert from at all.
How is the ECTS grade letter (A-E) actually defined?
By where a mark ranks against the rest of the same cohort on the same assessment: the top 10% get an A, the next 25% a B, the next 30% a C, the next 25% a D, and the bottom 10% (who still pass) get an E. It was never a fixed percentage-score table, which is why this calculator asks for your class rank rather than a mark out of 100.
Is the A-E scale still the official ECTS standard?
Not exactly. The 2015 revision of the ECTS Users' Guide moved away from a single fixed statistical curve, since applying rigid percentages to a small class isn't statistically meaningful, and recommends institutions publish their own grade distribution tables instead. The classic A-E bands are still widely referenced and appear on plenty of transcripts, which is why they're used here, but check whether your specific institution has adopted its own table.
What if I don't know my exact class rank?
Ask your institution's registrar or check your transcript, some universities include a percentile or rank alongside the raw grade specifically for this purpose. Without a real rank, any grade-letter conversion is a guess, this tool deliberately doesn't offer a percentage-based shortcut since no single accurate threshold table exists across institutions.
Is my data private?
Yes. Every calculation runs in your browser. Nothing you enter is sent to a server, logged, or stored.
Free ECTS converter by ANUPRESS
Credits: a widely used ratio, not a legal one
60 ECTS represents a full academic year under European Commission guidance, roughly 1,500 to 1,800 total study hours, and a typical US bachelor’s year runs about 30 semester credit hours for the same amount of study. Divide those and the common 2:1 ratio falls straight out, but it’s a convention institutions widely adopt, not a figure any single authority mandates. Your actual host and home institutions’ published equivalency tables, and your formal Learning Agreement if you’re on exchange, are what count officially, this calculator is for a quick estimate before you check those.
Why the grade converter won’t take a percentage
The ECTS A to E scale was defined from the start as a statistical ranking, the top 10% of a cohort get an A, the next 25% a B, and so on down to the bottom 10% who still pass with an E, not a fixed score threshold like “90% and up is an A.” Building a percentage-to-letter table here would mean inventing cutoffs no authoritative source actually publishes, since real thresholds vary enormously by institution and course, so this tool asks for the one input the original definition actually specifies: where you rank against your own class.
The scale most people cite is technically outdated
The 2015 revision of the ECTS Users’ Guide moved away from recommending a single fixed A-E curve applied everywhere, since forcing rigid percentages onto a class of 15 students produces meaningless results in a way it doesn’t for a class of 500. Institutions are now encouraged to publish their own grade distribution tables instead. The classic bands are still what most people mean when they say “ECTS grade” and still appear on plenty of real transcripts, which is why they’re used here, worth a quick check with your own institution’s registrar if the letter matters for something formal.