CalcBucket.com

Free Online Calculators That Actually Work

Get instant answers to your math, finance, and health questions. No signup required, no hidden fees, just free calculators that give you the results you need.

Most Popular Calculators

Mortgage Calculator

Calculate your monthly mortgage payment including principal, interest, taxes, and insurance. See how different rates and down payments affect your payment.

Example: $300,000 home with 20% down at 6.5% = $1,518/month

BMI Calculator

Check if your weight is healthy for your height. Uses the same formula doctors use to determine if you're underweight, normal, overweight, or obese.

Example: 5'6" person weighing 150 lbs = BMI of 24.2 (Normal)

Investment Calculator

Calculate how much your investments will be worth over time. See the power of compound interest and plan your retirement savings.

Example: $100/month for 30 years at 7% = $122,000

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin instantly. Perfect for cooking, weather, or scientific calculations.

Example: 25°C = 77°F = 298.15K

Calorie Calculator

Calculate how many calories you need each day to maintain, lose, or gain weight. Based on your age, height, weight, and activity level.

Example: 30-year-old, 5'8", 150 lbs, moderate activity = 2,200 calories/day

Unit Converter

Convert length, weight, area, volume, and more. Essential for cooking, travel, work projects, and everyday calculations.

Example: 1 mile = 1.61 kilometers = 5,280 feet

Why Our Calculators Work

Standard Formulas

We use the same formulas that banks, doctors, and professionals use. You can verify our results yourself.

Your Data Stays Private

All calculations happen in your browser. We never see your numbers or store your information.

Instant Results

No waiting, no loading screens. Enter your numbers and get answers immediately.

Calculator Categories

Finance

Calculate mortgage payments, loan terms, and investment returns.

  • • Mortgage Calculator
  • • Auto Loan Calculator
  • • Investment Calculator
  • • Retirement Planner

Health

Check your BMI, calculate calories, and track your fitness.

  • • BMI Calculator
  • • Calorie Calculator
  • • Body Fat Calculator
  • • Protein Calculator

Conversion

Convert between units instantly - temperature, length, weight, and more.

  • • Temperature Converter
  • • Length Converter
  • • Weight Converter
  • • Area Converter

Statistics

Analyze data with confidence intervals and hypothesis testing.

  • • Confidence Intervals
  • • Regression Analysis
  • • Hypothesis Testing
  • • P-Value Calculator

Math

Scientific and mathematical tools for students and professionals.

  • • Algebra Calculator
  • • Geometry Calculator
  • • Trigonometry Tools
  • • Matrix Calculator

Other

Specialized tools for unique needs and interesting calculations.

  • • Numerology Calculator
  • • IP Subnet Calculator
  • • Life Path Number
  • • Gematria Calculator

Common Questions

Are these calculators really free?

Yes, completely free. No registration, no hidden fees, no premium versions. Just open any calculator and start using it.

How accurate are the results?

We use standard formulas that you can verify yourself. For example, our mortgage calculator uses the standard amortization formula used by banks.

Do you store my data?

No. All calculations happen in your browser. We never see your numbers, and nothing gets sent to our servers.

Can I use these for work or school?

Absolutely. Many people use our calculators for homework, work projects, and business decisions. Just double-check important calculations when needed.

Can I suggest new calculators?

Sure! If you need a calculator we don't have, email us at calcbucket@gmail.com and we'll see if we can add it.

87 calculators found

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Finance

401K Calculator

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Health

ABSI Calculator

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Finance

Amortization Calculator

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Other

Angel Number Meaning Calculator

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Finance

Annuity Calculator

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Finance

Annuity Payout Calculator

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Conversion

Area Conversion Calculator

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Finance

Auto Loan Calculator

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Health

BAC (Blood Alcohol Content) Calculator

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Health

BAI (Body Adiposity Index) Calculator

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Finance

Basic Amortized Loan Calculator

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Finance

Basic Deferred Payment Loan Calculator

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Health

BMI (Body Mass Index) Calculator

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Health

BMR (Basal Metabolic Rate) Calculator

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Health

Body Fat Calculator

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Health

Body Surface Area Calculator

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Health

Body Type Calculator

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Health

BRI (Body Roundness Index) Calculator

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Health

Calorie Calculator

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Health

Calories Burned Calculator

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Health

Carbohydrate Calculator

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Finance

Compound Interest Calculator

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Statistics

Confidence Interval Calculator

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Finance

Credit Card Payoff Calculator

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Health

Daily Heart Rate Per Step Calculator

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Conversion

Data Transfer Rate Conversion Calculator

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Finance

Debts Payoff Calculator

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Health

Fat Intake Calculator

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Finance

Finance Calculator

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Health

Fitness Age Calculator

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Other

Gematria Calculator

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Health

GFR (Glomerular Filtration Rate) Calculator

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Health

Healthy Weight Calculator

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Health

Heart Age Calculator

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Finance

House Affordability Calculator

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Health

Ideal Weight Calculator

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Finance

Inflation Calculator

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Finance

Interest Rate Calculator

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Finance

Investment Calculator

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Conversion

IP Address Conversion Calculator

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Other

IP Subnet Calculator

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Other

IP Subnet Planner Calculator

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Health

Lean Body Mass Calculator

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Conversion

Length Conversion Calculator

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Other

Life Path Number Calculator

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Health

Macro Calculator

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Health

Mayo Clinic Well Being Index Calculator

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Finance

Mortgage Calculator

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Finance

Mortgage Payoff Calculator

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Finance

Multiple Credit Cards Payoff Calculator

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Other

Name Numerology Calculator

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Health

One Rep Max Calculator

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Health

Ovulation Calculator

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Statistics

P Value Calculator

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Health

Pace Calculator

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Finance

Pay Predetermined Amount At Loan Maturity Calculator

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Finance

Payment Calculator

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Finance

Pension Calculator

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Health

Period Calculator

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Health

Pregnancy Calculator

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Health

Pregnancy Weight Gain Calculator

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Health

Protein Intake Calculator

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Statistics

Regression Calculator

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Finance

Rent Calculator

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Finance

Rent Vs Buy Calculator

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Finance

Retirement Calculator

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Finance

Salary Calculator

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Finance

Sales Tax Calculator

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Finance

Savings Calculator

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Health

Screen Time Impact Calculator

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Health

Sleep Calculator

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Finance

Social Security Calculator

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Statistics

Standard Deviation Calculator

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Statistics

T Test Calculator

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Health

Target Heart Rate Calculator

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Health

TDEE Calculator

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Conversion

Temperature Conversion Calculator

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Conversion

Time Conversion Calculator

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Health

VO2 MAX Calculator

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Health

Waist Hip Ratio Calculator

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Health

Waist To Height Ratio Calculator

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Health

Walking Calorie Calculator

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Health

Water Intake Calculator

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Conversion

Weight Conversion Calculator

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Health

Weight Watcher Points Calculator

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Health

WHO5 INDEX Calculator

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Statistics

Z Score Calculator

87
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