# All online calculators

- Convert moles to liters and liters to moles
This online calculator converts to moles given liters of a gas at STP and converts to liters of a gas at STP given moles

- Converting degrees to radians
Converts radians to degrees, minutes and seconds

- Cost of one hour (or kilometer)
Calculation of price per 1 kilometer by user request

- Coulomb's law
This online calculator calculates unknown (whether force, charge or distance) using known values using Coulomb's law scalar formula. It can be used to solve physics problems.

- Count the number of words
The calculator counts word number in a given text. It can be used for rough calculation of translation cost. Can be used for word number calculation in software resources.

- Counting pipes from the end face
The approach to the calculation of the number of nested circles of smaller radius at a known length of the describing circle of a larger radius. Created by user request

- Course angle and the distance between the two points on loxodrome (rhumb line).
Calculation of a distance on loxodrome (rhumb line) and course angle (azimuth) between two points with a given geographical coordinates.

- Course angles and distance between the two point on the orthodrome(great circle)
Calculates the distance between two point of the Earth specified geodesic (geographical) coordinates along the shortest path - the great circle (orthodrome). Calculates the initial and final course angles and azimuth at intermediate points between the two given.

- Cramer's Rule
This online calculator solves system of linear equations using Cramer's rule and shows detailed steps of the solution

- Cryptarithmetic puzzle solver
This calculator is a solver of cryptarithmetic puzzles. Cryptarithmetic puzzle is a number puzzle in which a group of arithmetical operations has some or all of its digits replaced by letters or symbols, and where the original digits must be found. In such a puzzle, each letter represents a unique digit.

- Cuba World Development Indicators 2016 - in memory of Fidel Castro
This calculator provides access to 752 world development indicators for Cuba imported from World Bank data at 2016. In memory of Fidel Castro.

- Cube
- Cubic equation
Solution of cubic equation using Vieta's formulae. Created by user request

- Cylinder
- Cylindrical tank volume
Cylindrical tank volume

- Cylindrical Tank Volume Calculator
Use this calculator to determine your cylindrical tank volume in cubic inches and gallons even if one or both ends are rounded. Especially useful if you've cut the tank in length. If you've got a flat end just leave it blank or enter 0.

- Daily
Calculator of the daily calorie rate, taking into account the level of physical activity.

- Daily Needs Calorie Rate
- Date and interval
Adds and subtracts a specified time interval to the specified date

- Date and number of working days (for Russia)
Calculator calculates the date of the initial date and the number of working days. Taking into account weekends, holidays and weekend shifts at work days, according to the published decrees of the government of the Russian Federation. Created by user's request.