Calculators

Estimate Body Mass Index from your height and weight, giving a quick reference point for whether your weight falls in a typical range.

Estimate your monthly payment based on loan amount, interest rate, and repayment term, helping you understand the cost of borrowing.

Estimate your monthly mortgage payment based on home price, down payment, interest rate, and loan term, helping you budget before buying.

Add or remove Value Added Tax from a price, useful for working out the net or gross price of goods and services in countries that use VAT.

Add sales tax to a price based on your local tax rate, useful for estimating the final cost of a purchase before you check out.

Work out the tip amount and total bill based on your chosen tip percentage, with support for splitting the total evenly across a group.

Project how an investment grows over time when interest is earned on both the principal and previously accumulated interest.

Handle common percentage calculations, including finding a percentage of a number, percentage increase or decrease, and more.

Find the final price of an item after a percentage discount is applied, and see exactly how much you're saving on the purchase.

Convert values between common units of length, mass, temperature, volume, and more, useful for cooking, construction, science, and daily life.

Estimate the cost of a trip based on distance, your vehicle's fuel efficiency, and the current price of fuel, useful for budgeting road trips.

Work out your exact age in years, months, and days from your date of birth, useful for forms, legal documents, or simple curiosity.

Estimate your due date and current week of pregnancy based on the first day of your last period or a known conception date.

Estimate your daily calorie needs based on age, sex, weight, height, and activity level, useful as a starting point for weight goals.

Convert your dog's age into human years using a size-adjusted formula, since small and large breeds age at different rates.

Convert your cat's age into human years using the commonly accepted feline aging scale, since cats mature quickly in their first year.

Calculate running pace, finish time, or distance for any race, with quick presets for 5K, 10K, half marathon, and marathon.

Calculate the ideal bedtime or wake-up time based on 90-minute sleep cycles, so you wake up at the end of a cycle instead of in the middle of one.

Find your zodiac sign from any birth date, along with its element, ruling planet, and a short summary of common personality traits.

Estimate blood alcohol content based on drinks consumed, weight, and time elapsed, for educational purposes only and never as a basis for driving.