Compute test percentages and grades from correct/total with curve options. Turn 42/50 into 84% (B) instantly — free, local, no signup.
Compute simple probability as favorable outcomes divided by total outcomes — coin flips, dice rolls, card draws. See 3 in 10 read as 30.0% instantly — free, local, no signup.
Plan study hours from syllabus weight and days left — pass with scheduled effort. Turn 5 chapters in 10 days into daily targets — free, local, no signup.
Compute semester GPA from course grades and credit hours with credit-weighted math on the standard 4.0 scale — quick academic snapshot. See what straight B's earn — free, local, no signup.
Compute conversion rate from visitors and conversions with presets, history, and CSV export. Turn 2% into 3% deliberately — free, local, no signup.
Compute MD5, SHA-1, SHA-256, and SHA-512 hashes from text or file input using CryptoJS. Paste text or drop files; digests compute instantly for checksums and lookups — free, local, no signup.
84% — typically a B (80–89 band). Grade bands vary by institution; confirm cutoffs before celebrating.
Multiple-choice and essays weight separately then combine. A perfect MCQ section can't rescue a failed essay alone.
Curves shift bands by class performance — raw percent stays, letter moves. Ask whether your course curves before assuming.
No — math runs locally in your browser. Scores never leave your device.
Grade Calculator
Convert a single course percentage into its letter grade on the built-in plus/minus scale — see that an 85 earns a B instantly. Free, local, no signup.
Final Grade Calculator
Compute your overall course percentage from comma-separated assignment grades and their matching weights — Exam Heavy presets included. Numbers never leave your device — every calculation runs locally in your browser.
Last updated October 2026