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Free Online Calculators

CalcSuite offers a comprehensive collection of free online calculators for finance, health, math, and more.

All Tools40

GST Calculator India — Add or Remove GST Instantly (2026 Slabs)

Free GST calculator for India. Add or remove GST from any amount. Supports 0%, 5%, 12%, 18%, 28% slabs with CGST/SGST split and reverse calculation.

indiaPopular

EMI Calculator India — Home, Car & Personal Loan EMI (2026)

Enter loan amount, rate & tenure → instantly see monthly EMI, total interest, and year-wise amortization. ₹50L home loan at 8.5% for 20yr = ₹43,391/mo.

indiaPopular

SIP Calculator — Estimate Mutual Fund Returns & Wealth Growth

Enter monthly SIP amount → see total invested, estimated returns, and future corpus. ₹10,000/month at 12% for 10 years = ₹23.2 Lakh. Plan your mutual fund goals.

financialPopular

BMI Calculator — Check Your Body Mass Index (WHO Standard)

Enter height and weight → instantly see your BMI score, WHO weight category, and healthy weight range. Supports metric & imperial. Works for men, women & Indian/Asian BMI ranges.

healthPopular

Percentage Calculator — What Is X% of Y? Increase & Decrease

Solve any percentage problem instantly: X% of Y, percentage increase/decrease, what % is X of Y, and percentage difference. With step-by-step formula shown.

mathPopular

Mortgage Calculator - Estimate Monthly Home Loan Payments

Estimate mortgage payments, interest, taxes, insurance, and amortization to compare home loan costs before you buy.

financialPopular

Salary Calculator — Convert Annual, Monthly, Weekly & Hourly Pay

Instantly convert salary between annual, monthly, biweekly, weekly, daily, and hourly. See how much $25/hr is per year or ₹50,000/month is hourly.

financialPopular

Inflation Calculator - Measure Buying Power Over Time

See how inflation changes the value of money over time and compare past amounts with today’s purchasing power.

financialPopular

In-Hand Salary Calculator India - Convert CTC to Take-Home Pay

Convert CTC to in-hand salary and estimate monthly take-home pay after common payroll deductions in India.

indiaPopular

Income Tax Calculator India - Compare Old vs New Tax Regime

Calculate income tax in India, compare old vs new regime, and estimate deductions, cess, and total tax payable.

indiaPopular

Basic Calculator - Free Online Calculator for Everyday Math

Use a simple online calculator for quick addition, subtraction, multiplication, and division with instant results on any device.

math

Scientific Calculator - Free Online Calculator for Math and Trig

Solve trigonometry, logarithms, exponents, and advanced equations with a scientific calculator built for fast, accurate results.

math

Triangle Calculator - Find Sides, Angles, Area and Perimeter

Calculate triangle sides, angles, area, and perimeter for right, isosceles, equilateral, and scalene triangles in one place.

math

Fraction Calculator - Add, Subtract, Multiply and Divide Fractions

Work out fraction problems online, simplify answers, and calculate mixed numbers quickly with step-friendly fraction tools.

math

Loan Calculator - Calculate Monthly Payment, Interest and Total Cost

See monthly loan payments, total interest, and total repayment for personal, student, or other loans with a quick online calculator.

financial

Auto Loan Calculator - Estimate Car Payment, Interest and Taxes

Calculate your monthly car payment, total interest, sales tax, and trade-in impact before financing a new or used vehicle.

financial

Investment Calculator - Estimate Future Value and Investment Growth

Project investment growth with contributions, return rate, and compounding to see future value and long-term wealth potential.

financial

Retirement Calculator - Estimate How Much You Need to Retire

Plan retirement savings, future income needs, and monthly contributions with a calculator built for long-term retirement goals.

financial

Calorie Calculator - Estimate Daily Calories and TDEE

Find your daily calorie needs for maintenance, weight loss, or muscle gain based on activity level, age, height, and weight.

health

Body Fat Calculator - Estimate Body Fat Percentage Online

Estimate body fat percentage using proven body measurement formulas and get a quick read on body composition goals.

health

BMR Calculator - Estimate Basal Metabolic Rate Online

Calculate basal metabolic rate to estimate how many calories your body needs at rest before activity or exercise.

health

Ideal Weight Calculator - Find a Healthy Weight Range

Estimate a healthy weight range using popular medical formulas and compare results based on your height and sex.

health

Pregnancy Calculator - Estimate Due Date and Pregnancy Timeline

Calculate your due date, weeks of pregnancy, and trimester timeline from your last period or conception date.

health

Age Calculator - Find Your Exact Age from Date of Birth

Free age calculator to find your exact age in years, months, and days from any date of birth. Includes next birthday countdown.

other

GPA Calculator — CGPA & SGPA on 4.0 and 10-Point Scale

Enter your course credits and grades to instantly calculate GPA, SGPA, or cumulative CGPA. Supports the US 4.0 scale and the Indian 10-point grading system.

other

Password Generator - Create Strong Random Passwords Online

Generate strong random passwords with customizable length and character rules to improve account security in seconds.

other

Unit Converter - Convert Length, Weight, Temperature Online

Free unit converter for length, weight, temperature, volume, speed, and area. Convert metric to imperial and back instantly.

other

Random Number Generator - Generate Random Numbers Online

Generate random numbers in any range for games, raffles, classroom use, testing, and everyday picks.

other

Ovulation Calculator - Estimate Fertile Days and Ovulation

Predict your fertile window and likely ovulation date based on cycle timing to help with pregnancy planning.

health

Days Between Dates Calculator — Count Days, Weeks & Months Between Two Dates

How many days between two dates? Enter a start and end date to instantly count the exact days, weeks, months, and years between them. Includes business days, leap year handling, and add/subtract days from any date.

other

Tip Calculator — How Much to Tip? Quick Tip & Bill Splitter

Enter your bill → instantly see the tip amount, total, and each person's share. Pre-tax tips, rounding, bill splitting, and tipping guide for US, India & 7 countries.

math

FD Calculator India - Calculate Fixed Deposit Maturity Online

Calculate FD maturity amount, interest earned, and total returns for fixed deposits with tenure, rate, and compounding.

india

RD Calculator India - Calculate Recurring Deposit Maturity

Estimate RD maturity value, interest earned, and total savings for monthly recurring deposits with quarterly compounding.

india

PPF Calculator - Calculate PPF Maturity and Returns Online

Free PPF calculator to estimate maturity amount, interest earned, and tax-free returns for 15-year Public Provident Fund investments in India.

india

Home Loan Eligibility Calculator India - Check Loan Eligibility

Estimate how much home loan you may qualify for based on income, obligations, tenure, and expected interest rate.

india

HRA Calculator India - Calculate House Rent Allowance Exemption

Calculate HRA exemption under Indian income tax rules using salary, rent paid, and metro or non-metro city details.

india

Compound Interest Calculator — See How Your Money Grows Over Time

Free compound interest calculator with daily, monthly, and yearly compounding. See future value, total earnings, and growth chart for any investment.

financial

Simple Interest Calculator — Calculate Interest on Loans & Savings

Free simple interest calculator to instantly find the interest amount, total maturity value, and principal. Supports months and years for fast calculation.

financial

Percentage Change Calculator - Calculate Increase or Decrease

Find percentage increase or percentage decrease between two values quickly for prices, revenue, marks, and metrics.

math

Discount Calculator — Sale Price After X% Off (With Tax)

Enter original price and discount % → instantly see the sale price, savings amount, and final total after tax. Supports coupons, bulk quantities, and multiple discounts.

math

Third-Party Financial Tools & Resources

Explore a curated collection of external calculators and financial resources from internet's trusted sources to help you make informed decisions.

AI IS REPLACING JOBS IN 2026

Brain Arena is Waiting

Free Online Calculators

All Tools40

GST Calculator India — Add or Remove GST Instantly (2026 Slabs)

EMI Calculator India — Home, Car & Personal Loan EMI (2026)

SIP Calculator — Estimate Mutual Fund Returns & Wealth Growth

BMI Calculator — Check Your Body Mass Index (WHO Standard)

Percentage Calculator — What Is X% of Y? Increase & Decrease

Mortgage Calculator - Estimate Monthly Home Loan Payments

Salary Calculator — Convert Annual, Monthly, Weekly & Hourly Pay

Inflation Calculator - Measure Buying Power Over Time

In-Hand Salary Calculator India - Convert CTC to Take-Home Pay

Income Tax Calculator India - Compare Old vs New Tax Regime

Basic Calculator - Free Online Calculator for Everyday Math

Scientific Calculator - Free Online Calculator for Math and Trig

Triangle Calculator - Find Sides, Angles, Area and Perimeter

Fraction Calculator - Add, Subtract, Multiply and Divide Fractions

Loan Calculator - Calculate Monthly Payment, Interest and Total Cost

Auto Loan Calculator - Estimate Car Payment, Interest and Taxes

Investment Calculator - Estimate Future Value and Investment Growth

Retirement Calculator - Estimate How Much You Need to Retire

Calorie Calculator - Estimate Daily Calories and TDEE

Body Fat Calculator - Estimate Body Fat Percentage Online

BMR Calculator - Estimate Basal Metabolic Rate Online

Ideal Weight Calculator - Find a Healthy Weight Range

Pregnancy Calculator - Estimate Due Date and Pregnancy Timeline

Age Calculator - Find Your Exact Age from Date of Birth

GPA Calculator — CGPA & SGPA on 4.0 and 10-Point Scale

Password Generator - Create Strong Random Passwords Online

Unit Converter - Convert Length, Weight, Temperature Online

Random Number Generator - Generate Random Numbers Online

Ovulation Calculator - Estimate Fertile Days and Ovulation

Days Between Dates Calculator — Count Days, Weeks & Months Between Two Dates

Tip Calculator — How Much to Tip? Quick Tip & Bill Splitter

FD Calculator India - Calculate Fixed Deposit Maturity Online

RD Calculator India - Calculate Recurring Deposit Maturity

PPF Calculator - Calculate PPF Maturity and Returns Online

Home Loan Eligibility Calculator India - Check Loan Eligibility

HRA Calculator India - Calculate House Rent Allowance Exemption

Compound Interest Calculator — See How Your Money Grows Over Time

Simple Interest Calculator — Calculate Interest on Loans & Savings

Percentage Change Calculator - Calculate Increase or Decrease

Discount Calculator — Sale Price After X% Off (With Tax)

Third-Party Financial Tools & Resources

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