We Build Free Calculators
for Students Who Need Answers Fast
SabiCalculator is a free student calculator platform. No distraction between you and your result. No sign-up wall. No fluff. Just accurate tools that work the moment you need them — whether you are checking your GPA, calculating your IELTS band score, figuring out your ATAR, or converting your UK degree classification.
Grades Should Not Be Confusing
Every year, millions of students sit in front of a blank spreadsheet trying to figure out what their GPA actually is, what IELTS score they need for a university visa, or whether they are on track to graduate with the degree class they are aiming for. Some google it. Most get a confusing answer that requires more googling.
That is the gap SabiCalculator was built to close. We take the formulas that universities, test boards, and admissions systems actually use and turn them into clean, fast, plain-language tools anyone can use on their phone in under a minute.
We cover GPA calculators for the US, UK, Canada, Australia and Iceland. English test score tools for IELTS, TOEFL, PTE, OET, GRE, GMAT and more. ATAR and UCAS admissions tools. Percentage calculators. And a growing set of essential everyday tools for text, numbers, and conversions.
The goal is simple: you should be able to open any calculator on this site, enter your numbers, and get a clear answer — with a plain explanation of what it means and what to do next.
“A student should never have to wonder whether they are passing or failing because the calculation was too complicated to figure out. That is a solvable problem, and it is exactly what we are here to solve.”
Four Tool Categories. One Place.
Every calculator on SabiCalculator falls into one of four categories. Each category was built around a real student need — not a content strategy.
GPA tools for every major grading system: the US 4.0 scale, the Australian 7.0 scale, UK degree classifications, Canadian letter grades, and the Icelandic ECTS system. Includes cumulative GPA, weighted GPA, semester GPA, final grade calculators, and improvement planners.
Browse all GPA tools →IELTS band score calculators, TOEFL iBT score tools, PTE Academic score calculators, OET, GRE, GMAT, MCAT, SAT, ACT, and CEFR converters. Plus visa English requirement checkers, university English requirement tools, and migration score checkers.
Browse all test tools →Every percentage calculation you might need: percentage increase and decrease, reverse percentage, fraction to percent, decimal to percent, CAGR, compound interest, savings growth, loan interest, profit margins, investment returns, and budget percentage tools.
Browse all percentage tools →Word count, character counter, case converter, scientific calculator, average calculator, fractions calculator, binary text converter, Morse code translator, NATO phonetic alphabet, Roman numeral tools, and an online notepad. Practical tools for everyday use.
Browse all essential tools →Built Around Real Student Situations
There is no single type of SabiCalculator user. Some are final-year students running the maths on whether they can still graduate with a First. Some are international students comparing IELTS requirements across three universities before choosing where to apply. Some are parents trying to understand what their child’s ATAR score actually means.
What they all have in common: they need a fast, correct answer. Not a blog post. Not a YouTube explainer. Just the number — with enough context to know what to do with it.
We have built SabiCalculator specifically around the situations where that matters most.
- 🎓University StudentsTracking GPA, checking if they can still pass, planning which grades they need in remaining assessments.
- ✈️International StudentsComparing grading systems across countries. Converting UK grades to US GPA. Checking IELTS requirements for student visas.
- 📋IELTS, TOEFL & PTE Test-TakersCalculating band scores, understanding what they need for specific university courses, checking migration English thresholds.
- 🏫Year 12 Students (Australia)Estimating ATAR scores, understanding selection ranks, planning subject combinations for target courses.
- 👨👩👧Parents & School AdvisorsUnderstanding degree classifications, UCAS points, and grading systems without needing a background in education.
- 🌍Migration ApplicantsChecking English language requirements for skilled worker visas, professional registration, and permanent residency applications.
The Standards Every Tool Is Built To
We do not publish a calculator until it meets every one of these. Not most of them.
Verified Formulas Only
Every calculation is based on the formula actually used by the relevant institution, exam board, or government body. We check US GPA against NACAC standards, IELTS band rounding against official Cambridge guidance, and UCAS points against the published tariff tables.
Results in Plain Language
A number alone is not enough. Every result includes a plain explanation of what it means — whether that is a degree classification, a pass threshold, or an admissions band. We write for students who are stressed, not for academics comfortable with jargon.
Mobile First, Always
Most students open SabiCalculator on a phone, often on a slow connection, while checking results on the same day they arrive. Every tool is designed and tested for mobile first. Fast load. No heavy scripts. No layout that breaks on small screens.
Zero Barriers to Access
No account. No email. No paywall. No “try free for 7 days.” The tool opens, you enter your numbers, you get your answer. That is the whole transaction. We do not monetise through friction.
Country-Specific, Not Generic
A GPA calculator that works for the US does not automatically work for Australia or Canada. We build separate tools for each country’s system because the formulas, scales, and grade boundaries are genuinely different and a one-size-fits-all approach gets the maths wrong.
Anxiety Reduction, Not Anxiety Creation
Students using these tools are often already stressed. Our UX is designed to reduce that, not add to it. Clear inputs. Immediate results. No confusing options. No dark patterns. If something can be made simpler, we make it simpler.
Countries We Cover
Each country has its own grading system, degree structure, and admissions process. We build tools that reflect how each one actually works.
United States
4.0 GPA scale, weighted GPA for AP/Honors, semester and cumulative GPA, final grade calculators, SAT/ACT/GRE/GMAT score tools.
US student tools →United Kingdom
Degree classifications (First, 2:1, 2:2), GCSE and A-Level calculators, UCAS Tariff points, predicted grade tools, resit calculators.
UK student tools →Canada
Canadian letter grade to GPA conversion on the 4.0 scale, cumulative GPA, final exam grade calculators, assignment weight tools.
Canada student tools →Australia
ATAR calculator, WAM calculator, GPA on 4.0 and 7.0 scales, selection rank tools, Honours and postgrad GPA checkers, required exam score tools.
Australia student tools →Iceland
Icelandic 0–10 ECTS grade calculator, Meðaleinkunn (weighted average) calculator, grade to 4.0 GPA converter, UK degree band converter.
Iceland student tools →Common Questions
The things people ask most often about SabiCalculator.
Is SabiCalculator free to use?
Do I need to create an account or give my email?
Are the GPA and grade calculations accurate?
Which IELTS calculator should I use?
What is the difference between GPA and WAM?
Can I use SabiCalculator on my phone?
How do I calculate my ATAR?
Ready to Use a Calculator That Actually Works?
100+ free tools. No sign-up. Instant results. Pick the one you need and get your answer now.