How this works in your browser
Each letter grade is mapped to its point value on the standard four-point scale, multiplied by that course's credit hours, and the sum of those products is divided by the total credit hours. Weighting by credits rather than averaging grades directly is what makes the result match how institutions actually compute GPA, and it is the reason a heavy course moves the number so much more than a light one. The calculation recalculates live as rows change, which is what makes it useful for planning rather than only reporting. Everything runs in your browser with no academic record transmitted.
GPA Calculator vs. typical online calculators
| Feature | GPA Calculator (in-browser) | Typical online calculators |
|---|---|---|
| Where the maths runs | In your browser, on your device | Often posted to a server to compute |
| Your inputs are stored | Never - nothing is sent or saved | Frequently logged with your session |
| Works offline once loaded | Yes | No - needs a live connection |
| Ads inside the result area | None | Common on free calculators |
| Account required | No | Often, to save or export results |
| Usage limits | None - free, unlimited use | Sometimes capped per day |
Who uses GPA Calculator
Tracking your GPA
Keep a running figure between official transcript updates.
Planning what you need
Work out the grades required to reach a target average.
Checking scholarship eligibility
See whether you are on track for a GPA threshold.
Comparing course loads
See how taking a heavy course affects your average either way.
How to use GPA Calculator
- 1
Open the GPA Calculator
Go to tools.slaytic.com and open the GPA Calculator. No sign-up or account required.
- 2
Add each course
Enter the letter grade and the credit hours for every course.
- 3
Watch the total update
The weighted average recalculates as you add or remove rows.
- 4
Plan ahead
Add upcoming courses with target grades to see what you need to reach a goal.
Frequently asked questions
What grading scale is used?
The standard US 4.0 scale (A = 4.0 down to F = 0.0), including plus/minus grades where applicable.
Does it weight by credit hours?
Yes, GPA is calculated as the credit-hour-weighted average, matching how most institutions compute official GPA.
Can I add or remove courses?
Yes, use "Add course" to add more rows, or the trash icon on any row to remove it.
Why does one bad grade in a big course hurt so much?
Because GPA is weighted by credit hours, not by course count. A poor grade in a four-credit course carries twice the weight of the same grade in a two-credit one, which is why an unexpected drop often traces back to a single heavy class rather than a general decline.
How do I work out the grades I need?
Enter your completed courses, then add the remaining ones with the grades you are aiming for and watch the total. Working backwards like this is far more useful than calculating what you have, because it shows quickly whether a target is still reachable.
Does this handle weighted or honours GPA?
No, it uses the standard four-point scale. Schools that award extra points for honours or advanced courses use their own scales, and those vary enough between institutions that a generic calculation would mislead. Check your school's published scale for a weighted figure.
Why does my official GPA differ slightly?
Usually because of institutional rules this calculation cannot know: how repeated courses are counted, whether pass or fail credits are included, and how transfer credits are treated. Use this for planning and your registrar's figure as the record.