Blog: Practical Guides

Short, practical guides that go with our free tools.

Learn how the Pomodoro Technique works, how long each session should be, and how to use it for study and work.

Understand the EMI formula, see a worked example, and learn how interest rate and loan term change your monthly payment.

Learn how to find a percentage of a number, a percentage change and what percent one number is of another.

Understand the BMI formula, the standard weight categories and the limits of BMI as a health measure.

A step-by-step guide to calculating semester and cumulative GPA using credit hours and a 4.0 scale.

See how compound interest grows savings, compare it with simple interest, and use the Rule of 72 for quick estimates.

Learn how to work out sale prices, savings and stacked discounts so you know what you really pay.

A simple explanation of UTC, time zone offsets and daylight saving, with tips for scheduling meetings across countries.

Practical advice for creating strong passwords, using a password manager and protecting your accounts.

Learn how the Islamic Hijri calendar works, why its months move through the seasons and how to convert dates.

Learn how to make a free QR code for a link, text or Wi-Fi network, how QR codes work and how to make sure they scan.

Simple tips to get clearer, more accurate machine translations between Urdu, English, Arabic and other languages.

Learn how to make a photo smaller for job, admission and visa forms. Simple steps to reduce image size in KB without losing clarity.

Learn what WPM means, what a good typing speed is and how to type faster and more accurately with a simple daily practice plan.