Free Online Calculators &amp; Web Tools

Time Duration

Hours & minutes between two times

Birthday Countdown

Days until your next birthday

🚀 Coming Soon

Pregnancy Due Date

Estimate your expected delivery date

Ovulation Calculator

Find fertile window & ovulation day

BMI Calculator

Body Mass Index & healthy weight range

BMR Calculator

Basal Metabolic Rate calculation

Calorie Calculator

Daily calorie needs based on activity

Ideal Weight

Find your ideal body weight by height

Body Fat Calculator

Estimate body fat percentage

Water Intake

Daily water intake recommendation

Sleep Calculator

Optimal wake-up & sleep times

Love Compatibility

Check love match percentage

Trending

Life Expectancy

Estimate life expectancy from lifestyle

Zodiac Sign

Find your zodiac sign by birthdate

Fun

💰

Finance & Money

Loans, investments, taxes, savings & retirement planning

19 tools

EMI Calculator

Monthly EMI with amortization schedule

🔥 Most Popular

Loan Calculator

General loan amount & repayment

Home Loan Calculator

Mortgage EMI & total interest payable

Personal Loan

Personal loan EMI & eligibility

Car Loan Calculator

Auto loan payments & total cost

SIP Calculator

SIP returns with compound growth

⭐ Investor

Compound Interest

Growth with compound interest formula

Simple Interest

SI on principal, rate & time

GST Calculator

GST inclusive & exclusive amounts

🔥 Trending

Income Tax Calculator

Tax liability on annual income

Salary Calculator

CTC to in-hand salary breakdown

Take Home Pay

Net pay after all deductions

Retirement Calculator

Savings needed for retirement goals

⭐ Planner

Inflation Calculator

Real value of money over time

Investment Return

ROI on any investment scenario

Mutual Fund Calculator

Lumpsum vs SIP returns comparison

Fixed Deposit (FD)

FD maturity amount & interest earned

Currency Converter

Real-time currency conversion

Crypto Profit

Profit & loss on crypto investments

📐

Math & Academic

For students, researchers & math enthusiasts

15 tools

Percentage Calculator

% of, % change & reverse %

Fraction Calculator

Add, subtract, multiply fractions

Ratio Calculator

Simplify & solve ratio problems

GPA Calculator

Semester & cumulative GPA

⭐ Student

CGPA Calculator

Cumulative GPA to percentage

Scientific Calculator

Advanced scientific functions

Matrix Calculator

Matrix operations & determinants

Algebra Solver

Solve linear algebra equations

Quadratic Equation

Roots using the quadratic formula

Logarithm Calculator

Log & antilog computations

Prime Number Checker

Test if any number is prime

Average Calculator

Mean, median & mode finder

LCM & HCF Calculator

Least common multiple & GCD

Standard Deviation

Population & sample std deviation

Probability Calculator

Single & compound probability

🏗️

Engineering & Construction

Practical tools for builders, architects & engineers

11 tools

Concrete Calculator

Concrete volume for slabs & beams

Cement Calculator

Bags of cement needed for construction

Brick Calculator

Number of bricks for a wall area

Tile Calculator

Tiles needed for floors & walls

Steel Weight

Weight of steel bars & sections

Paint Calculator

Litres of paint needed by area

Area Calculator

Area of shapes, rooms & land plots

Volume Calculator

Volume of 3D shapes & tanks

Square Foot Calculator

Room & property area in sqft

Cubic Meter

Volume in cubic meters & yards

Unit Conversion

Engineering unit conversions

🏃

Health & Fitness

Performance, nutrition & wellness calculators

8 tools

Lean Body Mass

Fat-free mass calculation

Macro Calculator

Daily protein, carbs & fat targets

Protein Intake

Daily protein recommendation

TDEE Calculator

Total daily energy expenditure

Heart Rate Calculator

Max & target heart rate zones

Step to Calorie Converter

Calories burned from step count

Running Pace Calculator

Pace, speed & finish time

Body Mass Index (BMI)

BMI with full health category

👨‍👩‍👧

Family & Relationship

Love, compatibility, milestones & family planning

6 tools

Marriage Age Calculator

Ideal marriage age predictor

Love Match Calculator

Love compatibility percentage

Trending

Compatibility Calculator

Zodiac & name compatibility

Baby Name Numerology

Numerology value of any name

Anniversary Calculator

Days until your anniversary

Age Gap Calculator

Age difference between two people

🔄

Conversion Tools

High-utility unit & measurement converters

8 tools

Length Converter

Meters, feet, inches & cm

Weight Converter

Kilograms, pounds, lbs & grams

Temperature Converter

°C, °F & Kelvin conversions

Speed Converter

km/h, mph & knots converter

Fuel Efficiency

MPG, km/L & L/100km

Data Storage Converter

GB, MB, TB & bytes

Pressure Converter

PSI, bar, Pascal & atm

Energy Converter

Joules, calories & kWh

🏢

Business & Commerce

Margins, markup, break-even & commerce calculators

7 tools

Profit Margin Calculator

Gross & net margin percentages

Markup Calculator

Selling price from cost & markup

Break-Even Calculator

Units needed to break even

Discount Calculator

Sale price after percentage off

Invoice Calculator

Total with tax for billing

ROI Calculator

Return on investment percentage

CAGR Calculator

Compound annual growth rate

⏳

Time-Based Tools

Timers, countdowns & time zone calculators

7 tools

Time Zone Converter

Convert time between world cities

Work Hours Calculator

Total weekly work hours & overtime

Age in Days

Exact number of days you have lived

Days Until Calculator

Countdown to any event or date

Business Days Calculator

Working days between two dates

Day of Week Calculator

What day of week is any date

Leap Year Calculator

Check if a year is a leap year

🎯

Advanced & Unique

AI-powered & unique lifestyle calculators

10 tools

Biological Age Calculator

Discover your real biological age

🔥 Viral✅ New

Carbon Footprint

Your personal CO₂ emissions score

Happiness Score

Measure your life satisfaction score

Screen Time Calculator

Analyse your daily screen time

Debt-Free Date

When will you be completely debt-free?

⭐ Financial

Financial Freedom

FIRE number & early retirement date

Relationship Timeline

Map your relationship milestones

Word Counter

Words, characters & reading time

Password Strength Checker

Test your password security level

Random Number Generator

Generate random numbers & pick winners

Fun

🌐

Website & SEO Tools

Analyze any website's tech stack, SEO performance & page speed

3 tools

Website & CMS Analyzer

Detect CMS, server, language, social & full tech stack

🔥 Hot✅ New

SEO Analyzer

Check meta tags, headings, keywords & SEO score

Page Speed Analyzer

Core Web Vitals, load time & performance score