Students & Study
How to Calculate Your Weighted Grade, SGPA and CGPA
Multiply each score by its weight, add the results and divide by the total weight. Worked examples, plus the UGC credit-weighted formula for SGPA and CGPA.
6 min read
Blog
Practical guides on money, documents, images, writing and code, and how to get a reliable answer from our free tools.
Data & Developers
How to Convert Excel to JSON: Headers, Sheets, Dates and Empty Cells
Upload an .xlsx file and get a JSON array with one object per row, keyed by the header row. How sheets, dates (serial numbers), empty cells and types come out.
7 min read
Students & Study
What Do I Need on My Final Exam? Formula and Worked Examples
Needed score = (target − current × (1 − weight)) ÷ weight. With 82% now, a final worth 40% and an 85% target, you need 89.5%. Examples for marks splits too.
6 min read
Data & Developers
How to Convert CSV to JSON (and JSON Back to CSV)
Paste CSV into a free converter and get a JSON array of objects keyed by the header row. How it treats headers, quotes and types, and how to go back to CSV.
7 min read
Data & Developers
How to Beautify CSS, HTML and XML (Online, VS Code, Prettier)
Beautifying adds line breaks and indentation so minified CSS, HTML or XML is readable again. How the free formatters work, their limits, and VS Code and Prettier.
9 min read
Data & Developers
JSON to YAML: How to Convert, What to Quote, and the Norway Problem
Convert JSON to YAML for Kubernetes, GitHub Actions or Docker Compose: how the syntax maps, the Norway problem, values you must quote, and the converter's limits.
7 min read
Tips & Guides
How Old Is My Dog in Human Years? The Real Formulas
Not ×7. A dog is about 15 in human years at age one, 24 at two, then roughly 5 per year. The DNA-based formula, size charts and when a dog is senior.
6 min read
Finance & Money
How to Calculate Sales Tax (Simple Formula + Calculator)
Learn how to calculate sales tax on any purchase — the formula, examples, and a free sales tax calculator for the total, tax and subtotal.
1 min read
Data & Developers
JSON to TypeScript Interfaces: What Gets Inferred, What to Fix
Paste a JSON sample and get TypeScript interfaces. What the generator infers, what it misses (optional fields, null, unions, dates) and how to fix each by hand.
7 min read
Finance & Money
What Inflation Does to Your Savings: Real Returns Explained
At 6% inflation, ₹1 lakh in 10 years buys only what ₹55,839 buys now. Real returns, India's CPI (5.54% in Sept 2026) and savings vs FDs after tax.
7 min read
Data & Developers
How to Convert CSV to SQL INSERT Statements (and When to Bulk Load)
Paste CSV with a header row and get one INSERT per row. How the converter quotes text, numbers and NULLs, its MySQL backslash gap, and faster bulk-load commands.
8 min read
Tips & Guides
cm to Feet and Inches: Height Conversion With a Full Chart
Divide cm by 2.54 for inches, then by 12 for feet: 170 cm is 5 ft 7 in. Exact factors, a 140 to 200 cm chart, the 5.6 ft mistake and recruitment cut-offs.
6 min read