The Calcylator Blog

Big ideas for
everyday numbers.

Practical guides, clear examples, and smarter ways to calculate.

Loans & EMI

How to calculate EMI: a simple guide

Understand how EMI works, learn the formula, and see a step-by-step example to calculate your monthly payments with ease.

Calcylator Editorial Team6 min read

Everyday

Learn different ways to calculate age, from exact years to days, with clear examples.

Calcylator Editorial Team4 min read

Finance

See the key differences, with real examples to help you understand how interest grows.

Calcylator Editorial Team5 min read

Everyday7 min read
Age Calculator: Years, Months and Days From DOB
Age in years, months and days: subtract a date of birth step by step, handle borrowing and find age as on a cut-off date.
Health6 min read
How to Calculate BMI: Formula, Chart, Examples
Use the BMI calculator formula, weight (kg) ÷ height (m)², with a 72 kg and 170 cm example, adult BMI chart and what the number cannot tell you.
Health6 min read
BMR Formula: How to Calculate Resting Calories
Calculate BMR with the Mifflin-St Jeor equation for men and women, see two worked examples and learn why BMR is not your daily calorie target.
Health7 min read
Body Fat Percentage Calculator: Formula and Ranges
Body fat percentage: use the fat mass ÷ body weight formula, try a BMI-based estimate, and read common ranges with their limits.
Finance6 min read
Break-Even Point Formula: Units, Revenue, Examples
Work out your break-even point: fixed costs ÷ contribution per unit. A ₹60,000 coffee-shop example shows break-even units, revenue and the effect of price.
Everyday7 min read
Business Days Between Two Dates: How to Count
Business days between dates: remove weekends and holidays from the calendar count, with an October 2026 example and a work-week table.

Explore our free calculators and apply these concepts to your own numbers.