Quick Start Guide

• Enter max raw marks and UMS
• Add grade boundaries (optional)
• Input UMS or Raw mark
• Click Convert for instant results
• Share your configuration via link

Key Features

• Fully responsive design
• Advanced interpolation algorithms
• Privacy-first (no data sent anywhere)
• Lightning-fast calculations
• Accessibility optimized

Pro Tips & About

Always verify high‑stakes results with official board documentation; this tool provides informed estimates only. Add more boundary points (e.g., every grade) to increase local accuracy. If you lack full grade data, entering just the top, midpoint, and pass threshold still improves realism versus naive global scaling. Watch for unrealistic slopes: if one boundary pair is reversed or equal, correct it to avoid zero or negative gradients. You can bookmark or share a preconfigured link before an exam session so students can experiment with “what if” scenarios without editing numbers repeatedly. Finally, remember that boundaries shift every session—update them as soon as new tables are published.

This tool is meant to be friendly and simple. You do not need to be a data expert. Type numbers you know; leave out what you do not. The calculator quietly ignores blank rows so you stay focused. If a result looks strange, read across your rows and check that raw marks rise as UMS rises. That simple scan catches most mistakes. You can clear and start again at any point without refreshing the page. Share the link with classmates so everyone works from the same assumed boundaries. This reduces confusion during revision chats. Because everything runs in your browser, nothing is stored on a server. You keep control of your data and can use the page offline after the first load. Treat the output as a guide, not a promise, and you will get the best value from it.