- The greatest common divisor of two integers
This calculator determines the greatest common divisor of two integers using Euclidean algorithm

- The limit of the function at the given point
This calculator calculates the limit of the function at a given point numerically. It calculates the limit of the function well as x approaches to the specified value. It's not suitable for calculating the limits when x goes to infinity.

- The Muslim calendar. The Gregorian calendar conversion
The Muslim calendar. The Gregorian calendar conversion

- The waves and the wind. Calculation of wave characteristics
Calculation of wave characteristics

- The waves and the wind. Wave height statistical forecasting
Predicting the height of the waves depending on the wind strength

- Thermodynamics mixing problem solver
Online calculator to solve thermodynamic equilibrium problems, like finding final temperature when mixing fluids or finding required temperature for one of the fluids to achieve final mixed temperature

The calculator shows the current time, universal time, and time for the selected city

- Tidal gate calculator (Rule of twelfths)
This calculator calculates tidal gates using the rule of twelfths, estimating the height of the tide at any time, given only the time and height of high and low water.

- Tilted cylindrical tank volume
Calculates volume of cylindrical tank tilted at an angle. To perform calculation you must provide the tank size, angle and liquid level.

- Time difference between the cities
Calculates the time difference between the two cities based on the catalogue data.

- Time interval between two dates
Calculate time interval between two dates

- Time Span Calculator
This online calculator computes how much time is passed between two time points, specified in hours and minutes.

- Time units
Calculator expresses time interval in different time units.

This calculator calculates total square as sum of squares of entered rectangles

- Time. Total sum
Calculator sums up input time intervals

- Tips and tricks #5: How to show/hide input and output controls in a calculator
This article describes how to control visibility of input and output controls in a calculator

- Tips and tricks #8: How to reuse existing calculator
This article describes process of reusing another calculator's logic (algorithm) in your calculator.

- Torus
Volume and surface area of torus.

- Total time
- Total time
This calculator allows you to carry out the addition of the time - it displays the total, the average, minimum and maximum.

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