All-in-One Online Calculator Hub

Free, fast, and accurate calculators for all your daily needs. From health and fitness to finance and cooking, we've got you covered.

28+

Calculators

Health & Fitness

BMI Calculator

Calculate your Body Mass Index to assess if you're in a healthy weight range.

Basal Metabolic Rate

Calculate how many calories your body needs at rest.

Daily Calorie Needs

Calculate your daily calorie requirements based on activity level.

Water Intake Calculator

Calculate how much water you should drink daily.

Body Fat Calculator

Calculate your body fat percentage using the US Navy method.

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Finance

Loan Calculator

Calculate monthly payments and total interest for loans.

Compound Interest

Calculate compound interest with optional monthly contributions.

Simple Interest

Calculate simple interest on investments or loans.

Tip & Tax Calculator

Calculate tips, discounts, taxes, and split bills.

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Family & Baby

Pregnancy Due Date

Calculate your baby's due date using Naegele's rule.

Trimester Calculator

Determine which trimester you're in during pregnancy.

Baby Age Calculator

Calculate your baby's age in weeks, months, and days.

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Time & Date

Age Calculator

Calculate your exact age in years, months, and days.

Days Between Dates

Calculate the number of days between two dates.

Working Days Calculator

Calculate business days excluding weekends.

Countdown Generator

Create a shareable countdown to any date.

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Kitchen & Cooking

Cooking Unit Converter

Convert between grams, cups, tablespoons, and ounces.

Oven Temperature Converter

Convert between Celsius, Fahrenheit, and Gas Mark.

Recipe Serving Sizer

Scale recipe ingredients for different serving sizes.

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Study & School

Percentage Calculator

Calculate percentages, increases, and decreases.

GPA Calculator

Calculate your Grade Point Average.

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Utilities

URL Encoder/Decoder

Encode and decode URLs for web development.

HTML Entity Converter

Encode and decode HTML entities.

Text Case Converter

Convert text between different cases.

Color Converter

Convert between HEX, RGB, and HSL color formats.

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Fun & Others

Zodiac Sign Finder

Find your zodiac sign based on your birth date.

Name Compatibility

Fun compatibility calculator based on names.

Random Picker

Pick random items from a list or run a raffle.

Why Choose Calculator Hub?

100% Free

All calculators are completely free to use with no hidden costs or subscriptions.

Private & Secure

All calculations are performed locally in your browser. No data is sent to our servers.

Lightning Fast

Get instant results with our optimized calculators that work on any device.