How to calculate weighted grades accurately?

Hi everyone,

I’m working on creating simple academic visuals and reports for students, and I often need to calculate weighted grades accurately before designing charts or summaries.

Manually computing weighted averages for multiple subjects with different credit units can be confusing and time-consuming, especially when accuracy matters for final results.

I wanted to ask:

• What’s the best method you use to calculate weighted grades?
• Do you rely on spreadsheets, formulas, or online tools before moving to design or presentation work?

Thanks in advance!