Calculators & Generators

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Free calculators and generators for math, finance, health, passwords, and more. No registration required.

Featured Tools

BMI Calculator

Calculate your Body Mass Index to understand your weight status.

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Password Generator

Create strong, secure passwords with customizable options.

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Loan Calculator

Calculate monthly payments and total interest for loans.

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Calculators

BMI Calculator

BMI Categories:

  • Underweight: BMI < 18.5
  • Normal weight: BMI 18.5–24.9
  • Overweight: BMI 25–29.9
  • Obesity: BMI ≥ 30

Loan Calculator

Age Calculator

Generators

Password Generator

8 12 32

Generated Password

Password Strength: --
Length: 12 characters
Contains: Lowercase, Uppercase, Numbers

Password Safety Tips

  • • Use at least 12 characters
  • • Include numbers, symbols, and mixed case
  • • Avoid dictionary words or common phrases
  • • Don't reuse passwords across sites

Random Number Generator

Generated Numbers

Click "Generate Numbers" to get results

This generator uses a cryptographically secure random number generator to ensure fair and unpredictable results.

Helpful Articles

Understanding BMI: What Your Score Really Means

Body Mass Index (BMI) is a widely used tool to assess whether a person has a healthy body weight for their height. While it's not a perfect measure, it provides a quick screening method for weight categories that may lead to health problems.

How BMI is Calculated

The BMI calculation is simple: weight in kilograms divided by height in meters squared (kg/m²). For those using imperial measurements, the formula is (weight in pounds / height in inches²) x 703.

BMI Categories

  • Underweight: BMI below 18.5
  • Normal weight: BMI 18.5-24.9
  • Overweight: BMI 25-29.9
  • Obesity: BMI 30 or higher

Limitations of BMI

While useful for population studies, BMI has limitations:

  • Doesn't distinguish between muscle and fat
  • May not be accurate for athletes with high muscle mass
  • May underestimate health risks for some ethnic groups
  • Doesn't account for fat distribution

For a more complete health assessment, consider combining BMI with other measurements like waist circumference and body fat percentage.

Creating Strong Passwords: A Complete Guide

In today's digital world, strong passwords are your first line of defense against cyber threats. Here's how to create and manage passwords that keep your accounts secure.

Characteristics of Strong Passwords

  • Length: At least 12 characters (longer is better)
  • Complexity: Mix of uppercase, lowercase, numbers, and symbols
  • Unpredictability: Avoid dictionary words, names, or dates
  • Uniqueness: Different password for each account

Password Creation Strategies

Passphrase Method: Combine random words with numbers/symbols (e.g., "BlueTiger$Jumps42Over")

Algorithm Method: Create a personal algorithm (e.g., First letters of a sentence with modifications: "My dog Max was born in 2010!" becomes "MdMwb#2010!")

Random Generator: Use our password generator tool to create truly random passwords

Password Management Tips

  • Use a reputable password manager to store your passwords securely
  • Enable two-factor authentication (2FA) wherever possible
  • Change passwords immediately if a service reports a breach
  • Never share passwords via email or text
  • Be cautious of phishing attempts asking for credentials

Remember: The most secure password is one you don't have to remember yourself. Let a password manager handle the complexity while you maintain one strong master password.

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