Calculator Tools

Percentage, age, loan, BMI and unit converters

Calculate percentages, age, BMI, loan EMI, temperature conversions, and more. Our calculators provide instant results for everyday calculations. All computation happens in your browser. Use them for personal, educational, or professional purposes.

Common calculation tasks include figuring out percentages for tips or discounts, calculating age from a birthdate, estimating loan payments, checking BMI, converting temperature units, and more. Our calculators provide instant results without requiring a spreadsheet or calculator app.

Which calculator should I use?

Need	Tool
Calculate X% of Y	Percentage Calculator
Find exact age from birthdate	Age Calculator
Calculate loan monthly payments	Loan/EMI Calculator
Calculate mortgage payments	Mortgage Calculator
Track monthly budget	Budget Calculator
Calculate Body Mass Index	BMI Calculator
Convert Celsius to Fahrenheit	Temperature Converter
Calculate tip on a bill	Tip Calculator

Percentage Calculator

Calculate percentages, percentage increase and decrease online free — find percent of a number, ratio, and difference instantly.

Age Calculator

Free age calculator tool — calculate exact age in years, months and days online from any birthdate, with instant results.

Unit Converter

Convert between length, weight, area and volume units online free — support for dozens of measurement units, instant conversion.

Loan/EMI Calculator

Calculate loan EMI, total interest and payment schedule online free — see monthly breakdown for any loan amount and interest rate.

BMI Calculator — How to Calculate BMI

How to calculate BMI in kg and cm. Free BMI formula calculator with body mass index calculation formula, categories, and healthy weight range.

Temperature Converter

Convert between Celsius, Fahrenheit and Kelvin online free — instant temperature conversion for any value, no signup required.

Date Difference

Calculate the difference between two dates online free — find exact days, months, and years between any two dates instantly.

Tip Calculator

Tip calculator free online. Calculate tip amount, total bill, and split the bill between friends — instant results, no signup needed.

Discount Calculator

Calculate discounted price and savings amount online free — enter original price and discount percentage, get final price instantly.

Random Number Generator

Generate random numbers within a range online free — create random integers for games, testing, and sampling. Instant results.

Budget Calculator

Track monthly income and expenses with this free budget calculator. See how much you have left after bills — instant results online.

Mortgage Calculator

Calculate monthly mortgage payments with tax and insurance. Free online calculator with instant results — works in your browser.

US Sales Tax Calculator

Calculate sales tax for any US state. Includes all 50 states plus D.C. with current rates — free online calculator, instant results.

Pounds to Kilograms Converter

Convert pounds to kilograms and other weight units instantly. Free online converter with exact formulas — works in your browser.

Miles to Kilometers Converter

Convert miles to kilometers and other distance units instantly. Free online converter with exact formulas — works in your browser.

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