Tips & Guides
Celsius to Fahrenheit: Formula, Shortcut and Reference Tables
°F = °C × 1.8 + 32; °C = (°F − 32) ÷ 1.8. 37 °C is 98.6 °F and a fever starts at 38 °C (100.4 °F). Also the shortcut and its error, and weather and oven tables.
5 min read
Tips & Guides
General how-to guides and tips for free online tools.
Tips & Guides
How to Make Your Resume ATS-Friendly (Rules, Tools, Fresher Example)
Use one column, standard headings, a text-based PDF and the job description's exact skills. What ATS software really does, plus a fresher example.
11 min read
Tips & Guides
Age Calculator: How to Find Your Exact Age in Years, Months and Days
Count whole years, then whole months, then the days left. Born 31 March 1990? On 15 October 2026 you are 36 years, 6 months, 15 days. Month-end and 29 Feb rules.
7 min read
Tips & Guides
Unit Conversion Cheat Sheet: Length, Weight, Area, Volume, Speed and Data
Exact factors for everyday conversions: 1 inch = 2.54 cm, 1 kg = 2.2046 lb, 1 sq m = 10.764 sq ft, °F = °C × 9/5 + 32, and why 500 GB shows as 465 GB.
6 min read
Tips & Guides
How to Create a Strong Password (NIST 2025 Rules and Entropy Table)
Make it long, random and unique: 16+ generated characters in a password manager, or 5–6 random words you can remember. NIST's 2025 rules, 2FA and passkeys.
9 min read