Graphy in Action: Percentage, BMI, and EMI Visualized

Three Calculations, Three Visual Stories

Theory is useful, but Graphy truly shines when you see it applied to real problems. Below are three worked examples — the kind you will encounter daily — each shown through Graphy's visual renderers. These represent the MVP showcase calculators: Percentage, BMI, and EMI.

Example 1: Percentage Calculator — "What is 15% off ₹2,400?"

You are shopping and see a 15% discount on an item priced at ₹2,400. Instead of mental math, Graphy Calculator computes the discount and shows the full breakdown.

Input	Value
Original Price	₹2,400
Discount Rate	15%
Discount Amount	₹360
Final Price	₹2,040

Graphy Flowchart — Discount Calculation

Price ₹2,400

→

Discount × 15%

→

Save ₹360

→

Pay ₹2,040

The flowchart makes it obvious: original price flows through the discount rate to produce savings, then subtracts to the final amount. No hidden steps.

Example 2: BMI Calculator — "Am I in a healthy range?"

Body Mass Index combines weight and height into a single health indicator. Graphy Calculator computes BMI and uses the Gauge renderer to show exactly where you fall on the WHO scale.

Input	Value
Weight	72 kg
Height	175 cm (1.75 m)
Formula	BMI = weight ÷ height²
Result	23.5 (Normal)

Graphy Gauge — BMI 23.5

Underweight

Normal

Overweight

Obese

BMI 23.5 — Healthy Normal Range

Graphy Blocks — BMI Formula Steps

Weight 72 kg

Height² 1.75 × 1.75 = 3.0625 m²

Divide 72 ÷ 3.0625

BMI 23.5 — Normal

Example 3: EMI Calculator — "What will my home loan cost?"

Equated Monthly Installment (EMI) is one of the most complex everyday calculations. Graphy Calculator's EMI tool computes the monthly payment and uses bar charts to reveal how much goes to principal versus interest over the loan tenure.

Input	Value
Loan Amount	₹25,00,000
Interest Rate	8.5% per annum
Tenure	20 years (240 months)
Monthly EMI	₹21,698
Total Interest	₹27,07,520
Total Payment	₹52,07,520

Graphy Bar Chart — Principal vs Interest

Principal
₹25.0L

Interest
₹27.1L

Total
₹52.1L

Graphy Flowchart — EMI Formula

Inputs P = ₹25,00,000 · r = 8.5%/12 · n = 240

↓

EMI Formula EMI = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1)

↓

Monthly EMI ₹21,698

The bar chart instantly reveals a sobering truth: over 20 years at 8.5%, you pay more in interest than the original loan amount. Graphy makes this visible — not buried in a number you might ignore.

Unit Conversion with Graphy Blocks

Graphy Calculator preserves the full unit conversion experience from its predecessor. Converting units generates the same instant results, now with optional Graphy Blocks showing the conversion factor applied step by step.

Graphy Blocks — Celsius to Fahrenheit (100°C)

Input 100°C

Formula °F = (°C × 9/5) + 32

Compute (100 × 1.8) + 32 = 212

Result 212°F

The Graphy Difference

These three examples — percentage, BMI, and EMI — represent the MVP showcase of Graphy Calculator. Each exercises a different renderer: flowchart for sequential logic, gauge for bounded ranges, and bar charts for comparative breakdowns. Together, they prove the architecture: one calculation engine, many visual stories.

Experience Graphy Yourself

Download Graphy Calculator and try these calculations with live Graphy visualizations.

Get it on Google Play Store

Graphy Examples FAQs

Question	Answer
Can I switch renderers on the same calculation?	Yes. Flowchart, blocks, gauge, and charts all consume the same result without recalculating.
Does Graphy work for unit conversions?	Yes. Length, temperature, weight, and other conversions show the factor and formula in Graphy Blocks.
Which calculators have Graphy first?	Percentage, BMI, and EMI are the MVP showcase. Flowchart is available as fallback for all calculators.
Is Graphy required to use the app?	No. Graphy is optional. Your calculator and converter work exactly as fast without opening Graphy.