Free CGPA, SGPA & Attendance Calculators

Simple, instant grade calculators for students. No sign-up, no app to install — everything runs right here in your browser.

CGPA to Percentage Calculator

Convert your CGPA to a percentage with CBSE (×9.5), VTU, Anna University, Mumbai University and 4.0-scale formulas.

SGPA to CGPA Calculator

Enter each semester's SGPA and get your overall CGPA — simple average or credit-weighted.

Attendance Calculator

See your current attendance percentage, how many classes you must attend to reach 75%, and how many you can safely miss.

Percentage to CGPA Calculator

Convert a percentage back into CGPA using your university's official conversion formula.

Why students use GradeCalc Tools

Instant results — answers update as you type, no button to press.
The formula is always shown — you can see exactly how your result was calculated.
Private by design — your numbers never leave your phone or computer. Nothing is stored or sent anywhere.
Completely free — no account, no payment, no limits.

Frequently asked questions

Are these calculators free?

Yes. Every tool on GradeCalc Tools is free to use, with no sign-up and no limits.

Which CGPA formula should I use?

Use the formula published by your own university or board. CBSE and most Indian universities use CGPA × 9.5. VTU uses (CGPA − 0.75) × 10, Anna University uses CGPA × 10, and Mumbai University uses (CGPA × 7.1) + 11.

Is my data saved anywhere?

No. All calculations happen inside your own browser. We do not collect, store or transmit the numbers you enter.

Can I use these results on official forms?

Treat the results as reliable estimates, and confirm the final figure with your institution before using it on any official document, because each institution applies its own notified formula.

Disclaimer: GradeCalc Tools provides indicative conversions based on commonly published formulas. Rules differ by institution and can change. Please verify with your university or board. See our full Disclaimer.