Guides & How-To Articles
Step-by-step tutorials to help you understand calculations
How to Calculate Income Tax in Pakistan 2025-26 — Slabs, Examples & Filing Guide
Learn how to calculate income tax in Pakistan for salaried persons in 2025-26. Includes updated tax slabs, step-by-step calculation example, FBR IRIS filing process, and freelancer tax tips.
How to Calculate Gratuity in UAE, Pakistan & India — Formula & Examples
Step-by-step guide to calculating gratuity (end of service benefits) in the UAE, Pakistan and India. Includes formulas, eligibility rules, worked examples and common mistakes to avoid.
How to Calculate Daily Calorie Intake — BMR Formula, TDEE & Examples
Learn how to calculate your daily calorie intake using the Mifflin-St Jeor BMR formula and activity multipliers. Includes step-by-step example and tips for weight loss and weight gain.
How to Calculate Pregnancy Weeks from Last Period — Due Date Guide
Learn how to calculate pregnancy weeks from your last menstrual period using Naegele's Rule. Covers trimesters, irregular periods, IVF due dates, and important weekly milestones.
How to Calculate Ideal Weight for Your Height in kg — Formulas & Chart
Find your ideal weight using Devine, Robinson, Miller and Hamwi formulas. Includes ideal weight by height table, BMI-based range calculation, and tips for achieving a healthy weight.
How to Calculate Percentage Increase — Formula, Examples & Tips
Learn how to calculate percentage increase and decrease with the simple formula ((New - Old) / Old) x 100. Step-by-step examples for salary, price and investment growth.
How to Calculate Area of a Room — Square Footage Guide with Formulas
Learn how to calculate room area in square feet for flooring, painting and tiling. Covers rectangle, circle and L-shaped rooms with unit conversions and paint coverage tips.
How to Calculate Age Exactly — Chronological Age in Years, Months & Days
Learn how to calculate your exact chronological age from date of birth in years, months and days. Covers official documents, Korean age, age difference and fun age facts.
How to Calculate Discount Percentage Off — Formulas, Stacked Discounts & Tips
Learn how to calculate discount amount, sale price and discount percentage with simple formulas. Includes stacked discount math, mental math tricks and online shopping tips.
How to Calculate Sleep Cycles — Best Bedtime & Wake Time Calculator Guide
Learn how sleep cycles work and calculate your ideal bedtime or wake time using 90-minute cycles. Covers sleep stages, nap timing and sleep hygiene tips for better rest.
How to Calculate EMI on a Loan — Formula, Examples & Tips
Learn how to calculate EMI (Equated Monthly Installment) on any loan using the standard formula. Step-by-step guide with examples for home, car and personal loans.
How to Calculate BMI — Formula, Chart & What Your BMI Means
Learn how to calculate Body Mass Index (BMI) using weight in kg and height in cm. Includes WHO BMI chart, categories and tips for healthy weight management.
How to Calculate Zakat on Gold in Pakistan — Complete Guide
Step-by-step guide to calculating Zakat on gold, cash and investments in Pakistan. Includes Nisab threshold, Zakat rate and calculation examples in PKR.
How to Calculate GPA on a 4.0 Scale — College & University Guide
Learn how to calculate your GPA on a 4.0 scale for college and university. Covers cumulative GPA, semester GPA, weighted GPA and grade point conversion.
How to Calculate Percentage — 3 Easy Methods with Examples
Learn how to calculate percentage of a number, percentage change and percentage increase or decrease. Simple formulas with worked examples for students and everyday use.
How to Calculate Compound Interest — Formula & Examples
Understand the compound interest formula A=P(1+r/n)^nt with step-by-step examples. Learn the difference between simple and compound interest and how compounding frequency affects returns.
How to Calculate Body Fat Percentage at Home — Navy Method
Learn how to measure and calculate your body fat percentage at home using the US Navy method. Includes measurement guide, formulas for men and women, and healthy ranges.
How to Convert Marla to Square Feet in Pakistan — Complete Guide
Learn how to convert marla to square feet, kanal to marla and other Pakistani land measurement units. Includes conversion tables for 5 marla, 10 marla and 1 kanal plots.