- Humidification loads
This online calculator answers question "how to choose" humidifier, by calculating humidification requirements given initial and target relative humidity and building parameters

- Hydrostatic pressure
This online calculator can solve hydrostatic pressure problems by finding unknown value in hydrostatic equation.

- Kinematics. The Equations for Uniform Acceleration
This calculator will help you to solve uniform acceleration problems

- Kinematics. Throwing body up problem
Kinematics problem from the Svetozarov's book for MEPI matriculates

- Normal force
This online calculator calculates strength of the normal force from the mass of the object, the gravitational field strength and the angle of the inclined surface measured from the horizontal.

- Ohm's law
This calculator determines current by voltage and resistance using ohm law

First calculator converts relative humidity to absolute humidity for given temperature and barometric pressure. Second calculator converts absolute humidity to relative humidity for given temperature and barometric pressure

- Petroleum product density
Petroleum product density conversion, according to GOST 3900-85

- Power into Torque and vise versa
This online calculator turns power into torque and vise versa

- Pressure over a surface
This online calculator computes pressure, cause by given mass over given surface in gravity field. Result is displayed using different units of pressure

- Projection
Calculation of unknown parameters of projection using known parameters. Parameters are duration, maximum height, distance, initial velocity and angle.

- Saturation vapour pressure
This online calculator computes saturation vapour pressure for given temperature and atmospheric (barometric) pressure

This calculator computes the buoyant force and weight of the liquid displaced, given the volume of body in water

- Sound Speed in Gases
This online calculator computes speed of sound in an ideal gas.

- Space object velocity
It calculates the circular orbital velocity, escape velocity and planetary system escape velocity for the given planet parameters.

- Surface tension. Weight and volume of the drop of liquid
This online calculator calculates the weight and the volume of the drop given the surface tension, diameter of the capillary tube, and density of the liquid

- Temperature scales
Conversion between different temperature scales

- 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

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