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Free Online Calculators for
Every Calculation in India

Calculate ICSE, ISC and GDS percentage, check BMI, compute home loan and car loan EMI, find GST, work out ESI and gratuity, apply a sibling discount, split a bill, and find age by date of birth — instant results, 100% free, no signup required. Made for students, teachers, and professionals across India.

All Free Calculators

Choose any calculator below — instant results, no login needed

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Grade Calculator

Calculate exam percentage, letter grade (A/B/C), and GPA score online free. Perfect for students and teachers.

Education
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BMI Calculator

Calculate your Body Mass Index and know if you are underweight, normal, or overweight.

Health
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EMI Loan Calculator

Calculate monthly EMI, total interest payable, and full repayment schedule. Works for home, car, and personal loans.

Finance
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GST Calculator India

Add or remove GST from a price, or get the price without GST. Supports the current 5%, 18% and 40% slabs, plus older rates for earlier bills.

Finance · India
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Tip Calculator

Split bill and calculate tip easily. Ideal for restaurants and group outings.

Finance
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Percentage Calculator

Find percentages, percentage change, and percentage difference with 6 formula types.

Math
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Age Calculator

Calculate exact age in years, months, and days from date of birth. Find age on a specific date instantly.

Utility
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Password Generator

Generate strong, secure passwords instantly. Customize length, symbols, and complexity.

Security
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Home Loan EMI Calculator

Calculate housing loan EMI with year-wise amortisation schedule, LTV check and prepayment savings.

Finance · India
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Car Loan EMI Calculator

Work out car loan EMI and down payment, and see what a dealer's flat rate really costs in reducing-rate terms.

Finance · India
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Gratuity Calculator

Calculate gratuity using the Payment of Gratuity Act formula. Covers the 5-year rule and ₹20 lakh tax-free limit.

Finance · India
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Age Difference Calculator

Find the exact age gap between two people in years, months, days and weeks. Works for couples and siblings.

Utility
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ICSE Percentage Calculator

Class 10 percentage from your best five subjects with English counted. Includes ICSE grade to percentage.

Education
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ISC 12th Percentage Calculator

Class 12 percentage from English plus your best three subjects, with PCM or PCB aggregate.

Education
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GDS Percentage Calculator

India Post GDS merit percentage from 10th marks or CGPA, to four decimal places.

Education · India
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CGPA to Percentage Calculator

Convert CGPA or SGPA to percentage with the CBSE 9.5 rule, VTU, Anna University or GTU formula, and back.

Education · India
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Marks Percentage Calculator

Subject-wise marks with any maximum marks to total, percentage, division and marks needed for a target.

Education
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ESI Calculator Online

Employee 0.75% and employer 3.25% ESI contribution with the ₹21,000 wage ceiling check.

Finance · India
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Sibling Discount Calculator

Total school or tuition fee after a discount on the 2nd, 3rd and 4th child, and how much you save.

Finance

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Quick calculations right here on the homepage

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Why Use EzyCalc?

Free, private, and clear about how every result is worked out

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Instant Results

No loading, no waiting. Get your answers in milliseconds.

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Highly Accurate

Each calculator shows the formula it uses, with a worked example.

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Mobile Friendly

Works perfectly on phones, tablets, and desktops.

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100% Private

We never store your inputs. Your data stays on your device.

Latest Guides

Worked examples and official sources behind our most-used calculators. See all guides

GST 2.0: What Got Cheaper and What Got Costlier

Which items moved to 0%, 5%, 18% or 40% after 22 September 2025, with worked price examples and the maximum price change you can expect.

Gratuity Calculation: Formula, 5-Year Rule and Worked Examples

The 15/26 formula, the 5-year rule, the 4 years 240 days question, the new 1-year rule for fixed-term staff and the Rs 20 lakh tax limit.

ICSE and ISC Percentage: How to Calculate It

English plus best four (ICSE) or best three (ISC), PCM and PCB aggregates, and the mistakes that give the wrong percentage.

Home Loan Prepayment: How Much Interest You Actually Save

What a Rs 5 lakh prepayment saves in year 1, 5 or 10 on a Rs 30 lakh loan, reduce tenure vs reduce EMI, and the RBI prepayment rule.

Frequently Asked Questions

Quick answers about EzyCalc and our free calculators

What calculators are available on EzyCalc?
EzyCalc offers ICSE, ISC and GDS percentage calculators, Grade, BMI, Loan/EMI, GST, ESI, Gratuity, Sibling Discount, Tip, Percentage and Age calculators and a Password Generator — all free with no signup required.
Are all calculators on EzyCalc completely free?
Yes! All calculators are 100% free. No registration, no subscription, and no hidden charges — ever.
Is my data safe? Do you store my inputs?
Your data is completely safe. All calculations happen locally in your browser. We never collect, store, or transmit your inputs.
How to calculate GST online?
Use our free GST Calculator. Enter the base amount, select the GST rate (5%, 18% or 40%, or an older 12% / 28% rate for earlier bills), choose whether to add or remove GST — and get the result instantly.
How to calculate EMI for a loan?
Use our Loan EMI Calculator. Enter the loan principal amount, annual interest rate, and loan tenure in months. The calculator shows your monthly EMI, total interest payable, and full repayment schedule.
How to calculate age from date of birth?
Use our free Age Calculator. Enter your date of birth and it instantly shows your exact age in years, months, and days. You can also find your age on any future or past date.
How to calculate percentage of marks?
Use our Percentage Calculator or Grade Calculator. Divide your obtained marks by total marks and multiply by 100 to get the percentage. For example: 45 out of 60 = (45/60) × 100 = 75%.
What is BMI and how to check it online?
BMI (Body Mass Index) measures body fat based on height and weight. Use our BMI Calculator — enter your weight in kg and height in cm to get instant BMI result with category (Underweight, Normal, Overweight, or Obese).

About EzyCalc Free Online Calculators

EzyCalc (also searched as Ezy Calculator) provides free, fast, and accurate online calculators for students, professionals, and everyday users across India. Whether you need to calculate your exam grade percentage, check your BMI, plan a loan EMI, calculate GST, or split a restaurant bill — we have a calculator for every need.

Board students can use our ICSE percentage calculator, ISC percentage calculator and GDS percentage calculator, and employers can work out contributions with the ESI calculator. Our percentage calculator, BMI calculator, and age calculator by date of birth are built using verified mathematical formulas. Each tool gives instant and correct results without any technical knowledge required.

We believe quality tools should be free for everyone. EzyCalc will always remain 100% free — no login, no subscription, no hidden charges.