It handles the four scales you will meet most: the unweighted 4.0 used by most US applications, the weighted 5.0 used when honours and AP classes are reported on a different scale, the percentage used in many international systems, and the UCAS tariff points used by UK universities.
Calculator
Formula used
4.0 = pct ÷ 25 (cap at 4.0) · 5.0 = 4 + (pct − 80) ÷ 20 (cap at 5.0) · UCAS = tiered by grade band
How to use the High School GPA Converter
- Pick the scale you are converting from.
- Enter the value (a number, percentage or letter).
- Read the equivalent on the 4.0, 5.0, percentage and UCAS scales.
- Compare to a school's published thresholds.
About this tool
The High School GPA Converter is built for speed and accuracy: every calculation runs in your browser, so your data never leaves your device and the result updates as you type. It works equally well on a phone, a tablet or a desktop, and it is free to use as many times as you like.
Common use cases
- Translating an international transcript for a US application.
- Understanding a UK university's tariff offer.
- Comparing weighted and unweighted GPAs.
- Converting letter grades to a percentage quickly.
Tips for the best result
- Use the latest figures you have - even a small change in rate or term can shift the outcome by hundreds.
- For annual figures, divide by 12 to get a monthly number you can compare with the result.
- Bookmark this page and revisit the calculation as the inputs change.
Frequently asked questions
Is a 5.0 GPA always better than a 4.0?
Not necessarily. The 5.0 scale gives bonus points for honours, AP, IB and dual-enrolment classes, so a 3.8 weighted can be stronger than a 4.0 unweighted taken on easier courses.
How are UCAS tariff points calculated?
UCAS awards fixed point values to qualifications like A-levels, BTECs and the IB. They are not a percentage but a tariff; the calculator maps common bands.
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