# All online calculators

- Tips and tricks #9: Big numbers
How to use big number input and PCR library.

- Ton-kilometer. Conversion based on the cost of a kilometer
Calculation of a cost of ton-kilometer

- Torus
Volume and surface area of torus.

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

- 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.

- Total volume
This calculator calculates total volume as sum of volumes of entered rectangular parallelepipeds.

- Tournament table
The calculator performs the participant placement with two following conditions: 1) Each participant must start from each starting position. 2) Each participant must encounter every other participant.

- Trapezoid - Shaped Throat Opening
Use this calculator to lay out a trapezoidal shaped throat cut-out. Enter the throat area from the PitCalc, your tank's diameter and dam height.

- Travel Duration
This online calculator computes travel duration given departure time and city and arrival time and city using time zones information

- Traveling Wave Relationship
The relationship of the wave frequency, wavelength and propagation velocity.

- Triangle angles for given triangle sides
This calculator computes triangle angles for given triangle sides using cosine law

- Trigonometric functions
This online calculator computes the values of elementary trigonometric functions, such as sin, cos, tg, ctg, sec, cosec for an angle, which can be set in degrees, radians, or grads.

- Triple exponential smoothing
Description and examples of triple exponential smoothing

- Two argument arc tangent
The calculator gives an angle between positive axis x and the ray to the given point from point 0. The result corresponds to atan2 function, implemented in many computer languages and math libraries.

- Two sample t-Test
The calculator to perform t-Test for the Significance of the Difference between the Means of Two Independent Samples

- Unique words count
The calculator counts number of unique words in a given text. It also count number of repeated words. It also can remove all the repetitions from the text.

- Universal High School GPA Calculator
This online calculator lets you figure out your high school GPA. Even more, it provides you with editable conversion tables and weights, so you can tweak calculations in case you need it.

- Unused leave compensation at dismissal
Calculates the payment of compensation for unused leave, envisaged by the labor legislation of the Russian Federation to the dismissal of an employee.

- URL-encoded string decoder
This converter decodes URL-encoded string (percent-encoded characters). It converts reserved characters as well as UTF-8 characters