The CalcifyAll Blog
Plain-English guides that show the math behind everyday numbers.
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How to Calculate CGPA and Convert It to a 4.0 GPA
CGPA explained step by step: the credit-weighted cumulative formula, a verified worked example (162.4 quality points ÷ 45 credits = 3.61), how to convert CGPA to a percentage with × 9.5, and how an Indian 10-point CGPA maps to the US 4.0 scale — plus why there is no single official conversion.
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What Grade Do I Need on My Final to Pass?
Find the exact final exam score you need with one formula, four verified worked examples, and what to do if the number is above 100% or already secured.
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How to Calculate Daily Calorie Needs?
Your daily calorie needs explained step by step: the Mifflin-St Jeor BMR formula, TDEE activity multipliers, verified examples for a man (1,780 kcal BMR) and a woman (1,370 kcal BMR), and how to adjust for weight loss or gain.
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How to Calculate Loan Payments?
The amortization formula explained step by step, with a verified $20,000 loan example at 6% over 5 years ($386.66/month), total interest, term comparisons, and how extra payments save you money.
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How to Calculate Mortgage Payments? : Formula & Examples
A $300,000 loan at 6.5% over 30 years costs $1,896.20 a month in principal and interest. This guide explains the formula step by step, how amortization works, what PITI and PMI add, and why a 15-year loan saves over $212,000 in interest.
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How to Calculate BMI: Formula, Categories & Healthy Range
BMI is your weight divided by your height squared. This guide shows both formulas, works through verified examples, explains the CDC categories, and covers BMI’s limits — plus when body fat percentage tells you more.
