CalculatorPlanet.io

Calculator Directory

Free, accurate calculators for construction, finance, math, and more. Browse by category or use the search bar above.

Whether you're working on a construction project, managing your finances, solving mathematical problems, or converting units, our calculators provide instant results with clear explanations. Each calculator is built with precision and transparency, showing you exactly how calculations are performed.

Browse by category below to discover calculators organized by topic, or use the search bar in the header to find specific calculators by name, description, or tags. All our calculators are completely free to use, require no registration, and work on any device.

Math & Numbers(2 calculators)

Percentage Calculator

Calculate percentages, increases, and decreases quickly and easily.

Percentage Change Calculator

Calculate the percentage increase or decrease between two values.

View All 2 Math & Numbers Calculators →

Finance & Money(5 calculators)

Daily Compound Interest Calculator

Calculate compound interest with daily compounding to see how your investments grow over time.

Loan Repayment Calculator

Calculate monthly payments, total interest, and repayment schedule for personal loans, auto loans, and more.

Mortgage Calculator

Calculate your monthly mortgage payment, total payment, and total interest.

Credit Card Payoff Calculator

Calculate how long it will take to pay off your credit card debt and how much interest you'll pay.

Savings Goal Calculator

Calculate how much you need to save monthly to reach your financial goals.

View All 5 Finance & Money Calculators →

Unit Conversion(4 calculators)

Unit Converter

Convert between different units of length, weight, and temperature.

Length Converter

Convert between meters, centimeters, millimeters, inches, feet, yards, and miles.

Weight Converter

Convert between kilograms, grams, pounds, ounces, and tons.

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin temperature scales.

View All 4 Unit Conversion Calculators →

Health & Fitness(2 calculators)

BMI Calculator

Calculate your Body Mass Index (BMI) to assess your weight status.

BMR (Basal Metabolic Rate) Calculator

Calculate your Basal Metabolic Rate to understand how many calories your body burns at rest.

View All 2 Health & Fitness Calculators →

Date & Time(2 calculators)

Age on a Specific Date Calculator

Calculate how old someone will be or was on a specific date.

Date Duration Calculator

Calculate the duration between two dates in days, months, and years.

View All 2 Date & Time Calculators →

Everyday Life(2 calculators)

Discount / Sale Price Calculator

Calculate discounted prices, sale prices, and savings amounts.

Tip Calculator

Calculate tip amounts and total bill including tip for restaurants and services.

View All 2 Everyday Life Calculators →