CalcNest — Simple Calculators for Everyday Life

Basic Calculator

Everyday arithmetic — addition, subtraction, multiplication, division and percentages.

Percent Calculator

Find what one number is as a percentage of another.

What is

% of

Discount Calculator

Work out the sale price and how much you're saving.

Original price Discount %

Tip Splitter

Calculate the tip and split the bill between everyone at the table.

Bill amount Tip % Split between (people)

BMI Calculator

Estimate your Body Mass Index from weight and height.

Weight (kg) Height (cm)

Age Calculator

Find your exact age in years, months and days from your date of birth.

Date of birth

Simple Interest Calculator

Calculate interest earned or owed using the simple interest formula.

Principal amount Annual interest rate (%) Time (years)

Compound Interest Calculator

See how your investment or loan grows when interest compounds over time.

Principal amount Annual interest rate (%) Time (years) Compounds per year

Loan / EMI Calculator

Estimate your monthly loan payment (EMI) for a home, car, or personal loan.

Loan amount Annual interest rate (%) Loan term (years)

GST / Sales Tax Calculator

Add or remove tax from a price — useful for invoices and receipts.

Amount Tax rate (%) Amount type

GPA Calculator

Work out your grade point average from up to 5 courses (4.0 scale).

Unit Converter

Convert between common length and weight units.

Category

From

Value

About CalcNest

CalcNest is a free, no-nonsense collection of everyday calculators. We built it because most calculator sites are cluttered with pop-ups and slow to load. Every tool here runs directly in your browser — nothing is uploaded, stored, or tracked beyond standard analytics.

Whether you're splitting a dinner bill, checking a loan payment, or working out your BMI, CalcNest aims to give you an answer in under ten seconds.

CalcNest does not require an account and does not store the numbers you enter into any calculator — all calculations happen locally in your browser. This site may use cookies and third-party services (such as Google AdSense) to display ads and measure site performance. These services may collect information as described in their own privacy policies. Replace this section with your full privacy policy before publishing, including details on cookies, ad personalization, and data retention, as required by your local regulations (e.g. GDPR, CCPA).

Simple calculators, right when you need them