# Mega Calculator

> Free online calculators for math, finance, health, chemistry, physics, and more.

## Top calculators

- [BMI calculator](https://www.mega-calculator.com/health/bmi/): Online calculation of your BMI (body mass index) for men and women by filling out a form indicating your height and weight.
- [Calorie calculator](https://www.mega-calculator.com/health/calorie/): Calculate online the required number of calories per day, taking into account age, gender, weight, height, and level of physical activity.
- [Circumference calculator](https://www.mega-calculator.com/math/circumference/): Calculate online circumference and area of ​​a circle, knowing the diameter or radius.
- [Day calculator](https://www.mega-calculator.com/everyday-life/day-counter/): How many days are between two dates? Online calculation of the number of days between two specified dates (also allows you to determine the time interval in hours, minutes, seconds, etc.).
- [Egg boiling calculator](https://www.mega-calculator.com/food/eggs-boiling/): Calculate online the cooking time for soft-boiled and hard-boiled eggs depending on the temperature and size of the egg.
- [Exponent calculator](https://www.mega-calculator.com/math/exponent/): This calculator allows you to raise any number online to a power, including decimal ones.
- [Fraction calculator](https://www.mega-calculator.com/math/fraction/): Use our "fraction calculator" for adding, subtracting, multiplying, and dividing mixed and simple fractions online.
- [Hours calculator](https://www.mega-calculator.com/everyday-life/hours/): Online calculation of the time between the beginning and end of a given period in both 12 and 24 hour formats and taking into account breaks.
- [Margin calculator](https://www.mega-calculator.com/finance/margin/): Calculate online profitability taking into account the costs of production costs.
- [mg to ml conversion](https://www.mega-calculator.com/conversion/mg-to-ml/): Online measurement converter from milligrams (mg) to milliliters (ml), taking into account the density of the liquid (medicine).
- [ml to grams converter](https://www.mega-calculator.com/food/ml-to-grams/): Convert online the volume of a product in ml into its mass in grams, taking into account the density of the ingredient (flour, sugar, milk, honey, etc.)
- [Uncooked to cooked rice calculator](https://www.mega-calculator.com/food/uncooked-to-cooked-rice/): Determine online how much cooked rice you will get after cooking different types of raw rice.
- [Area of a Triangle with 3 Sides Calculator](https://www.mega-calculator.com/math/3-sides-triangle-area/): Find the area of a triangle from the lengths of its three sides using Heron's formula, with the perimeter calculated automatically.
- [5K Pace Calculator](https://www.mega-calculator.com/sports/5k-pace/): Enter your 5 km finish time to get your pace per kilometer, pace per mile, and average running speed.
- [Acceleration calculator](https://www.mega-calculator.com/physics/acceleration/): Online calculation of the acceleration of an object using a formula in physics. Allows you to calculate the acceleration, speed and time of a moving object.
- [Accuracy calculator](https://www.mega-calculator.com/statistics/accuracy/): Accuracy calculator helps you calculate the accuracy of your predictions.
- [Acres to square kilometers (acre to km²) converter](https://www.mega-calculator.com/conversion/acre-to-square-kilometer/): Use our online converter to convert from acres (acre) to square kilometers (km²) and vice versa, with formulas, a conversion table and worked examples.
- [Acres to square meters (acre to m²) converter](https://www.mega-calculator.com/conversion/acre-to-square-meter/): Use our online converter to convert from acres (acre) to square meters (m²) and vice versa, with a handy table, formulas and worked examples.
- [Acres to square miles (acre to mi²) converter](https://www.mega-calculator.com/conversion/acre-to-square-mile/): Use our online converter to convert from acres (acre) to square miles (mi²) and vice versa.
- [Acres to square yards (acre to yd²) converter](https://www.mega-calculator.com/conversion/acre-to-square-yard/): Use our online converter to convert from acres (acre) to square yards (yd²) and vice versa, with formulas, a reference table, and worked examples.
- [Acreage calculator](https://www.mega-calculator.com/conversion/acreage/): Calculate the acreage of a rectangular plot from its length and width in any unit, with the result reported in acres.
- [Acres to square feet (acre to sq ft) converter](https://www.mega-calculator.com/conversion/acres-to-square-feet/): Online conversion of acres to square feet (and square meters), and vice versa - square feet to acres.
- [Add time calculator](https://www.mega-calculator.com/everyday-life/add-time/): Add or subtract days, hours, minutes, and seconds to a starting date and time to find the resulting moment instantly.
- [Addition calculator](https://www.mega-calculator.com/math/addition/): The addition calculator helps you add numbers (two or more), including decimals, quickly and accurately online.
- [Age calculator](https://www.mega-calculator.com/everyday-life/age/): Online age calculation by dates, which will help determine any age with an accuracy of days, hours, minutes and seconds.
- [Age difference calculator](https://www.mega-calculator.com/everyday-life/age-difference/): Calculate the age difference between two people in years, months, and days using our easy age difference calculator. Enter dates of birth or ages to find the exact age gap instantly.
- [Age in Days Calculator](https://www.mega-calculator.com/everyday-life/age-in-days/): Count the exact number of whole days between a birth or start date and any target date, with the span also shown in total weeks and approximate hours.
- [Age in Years Calculator](https://www.mega-calculator.com/everyday-life/age-in-years/): Work out an exact age in years from a birth date to any target date, shown as whole completed years or as a precise decimal number of years.
- [Age in Years, Months and Days Calculator](https://www.mega-calculator.com/everyday-life/age-in-years-months-and-days/): Find an exact age broken down into completed years, months and days between a birth date and any target date, with calendar-aware leap-year handling.
- [Amp-hours to Watt-hours Calculator](https://www.mega-calculator.com/physics/ah-to-wh/): Convert a battery capacity in amp-hours (Ah) and its nominal voltage (V) into stored energy in watt-hours (Wh).

## More

- [All calculators](https://www.mega-calculator.com/): browse by category (math, finance, health, chemistry, conversion, and more)