These tools follow the rules Irish students are scored by: the CAO points grid for the Leaving Certificate, the Leaving Certificate grade bands and TU Dublin's grades. Every rule links to the page it comes from, with the date GradeCat opened it. Each tool works right away with no account, and your grades stay in your browser.
Tools
Which tool to use when
You want your points total: use the CAO Points Calculator. Pick each subject's grade, H1 to H8 or O1 to O8, and your maths grade, Foundation included. It adds up your best six results from one sitting, with the 25 bonus points for Higher Level maths at H6 or better and your LCVP Link Modules.
You took A levels: use the A level calculator. It tries CAO's four combinations of A levels and AS or EPQ results and keeps the best, with 25 bonus points for a maths A level that counts.
You want to know what a grade or a percentage means: see the Leaving Cert Grading Scale. It has the percentage band and points of every grade, and a lookup: 73% at Higher Level is a H3, worth 77 points.
You are at TU Dublin: the same page has TU Dublin's grades and grade point values for students who register from 2025-26 on, and the GPA each award class starts at.
How CAO points work
CAO's points grid gives each grade its points: a H1 is 100, a H4 66 and an O1 56. CAO counts your six best results from one sitting only, and Higher Level maths at H6 or better adds 25 points when maths is in that six. Minimum entry requirements are separate from points, so check each course's requirements as well.
Guides
- How CAO points work: the points grid, the best six, when the maths bonus counts, LCVP and Foundation maths, with worked examples.
Tools that work with any marks
Some GradeCat tools work on marks from any country. The Grade Calculator adds up marks out of their totals, for a mock exam say. The Weighted Grade Calculator combines continuous assessment and exam marks with their weights, and the Final Grade Calculator shows what you need in a final exam. Their letter grades follow US scales, so read the percentage they give.
Not covered yet
- A levels for CAO: CAO scores them on a scale of its own, and GradeCat has no tool for it yet.
- QQI FET (PLC) awards, and Leaving Certificate results from before 2017.
- College GPAs: UCD's GPA, the QCA at UL and MIC, Trinity's year weights and TU Dublin's GPA formula.
- Junior Cycle grades.
A tool goes live here only after its rules are checked against the page that sets them. Each result is an estimate, not an official result. See the privacy policy for what this site stores.