- Area de la Sombra de un Objeto
El área de la sombra se refiere a la de un objeto cuadrado o rectangular.

- Expressing length through different units
Calculator expresses a given length through the different units.

- Film calculator
Calculation of the film segment duration in frames, hours, minutes, seconds.

- Golden ratio
This calculator determines proportions according to golden ratio

- Imperial to Metric and Metric to Imperial measures of length converter
- Nautical measurement units
Nautical mile, sea mile, cable

The relationship of the wave frequency, wavelength and propagation velocity.

- Side length of a triangle
This calculator computes side length of a triangle given two sides and angle between them (law of cosines)

- Side of regular polygon from polygon area
Calculates the side length of regular polygon given the area of the regular polygon and number of sides

- The amount of material for the mesh
It's required to produce a mesh with predetermined length and width, roughly square meshes from tape with predetermined width. It is necessary to calculate the total length of the tape.

- 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