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756 tools
This free voltage drop calculator estimates the voltage drop of an electrical circuit based on the wire size, distance, and anticipated load current.
This free dew point calculator calculates dew point, relative humidity, or air temperature if given any of the other two values.
This calculator estimates heat index temperature felt by the human body based on the actual measured air temperature together with humidity level or dew point.
Convert speed and velocity units instantly with this free universal speed converter. Features bidirectional conversion, reference tables, and applications for travel, sports, and science.
Azimuth calculator finds the azimuth from the latitude and longitude of the initial and final point.
Check with our speed of sound calculator how the speed of sound in water or air changes with temperature.
The bolt torque calculator helps you make sure you tighten your bolts correctly.
This gear ratio calculator determines the rate of mechanical advantage or disadvantage a gear train produces in a gear system. Read on to learn more about gear ratio and its importance in our lives.
If you know the mass and velocity of an object, use the kinetic energy calculator to find its energy in movement.
Grab the potential energy calculator to find how much energy is stored in an object raised off the ground.
Learn the relationship between wavelength and frequency with this wavelength calculator.
With our easy-to-use converter, lux to foot candles conversion will never again cause you any problems!
The beat frequency calculator is your one-stop tool to calculate the beat frequency of two waves.
Use our frequency converter to switch between different frequency units.
The reverberation time calculator works out what is the time required for the sound intensity to decrease by 60 dB.
This free density calculator determines any of the three variables in the density equation given the other two.
Calculate relativistic time dilation effects from Einstein's special relativity. See how time passes slower at high velocities, explore the twin paradox, and view real-world examples like GPS satellites and particle accelerators.
The free space path loss calculator allows you to predict the strength of a radio frequency signal emitted by an antenna at any given distance.
The cool Fresnel zone calculator helps you determine the first Fresnel zone so you can keep your signal transmission as strong as possible. It also determines the other Fresnel zones, if you need them.
The power factor calculator helps you to describe the relationship between the real, reactive, and apparent power in an AC circuit.
The skin depth calculator allows you to determine the skin effect in conductors for any signal frequency.
Watts to lux calculator will help you measure how much luminous flux is spread over a given area.
The generator power calculator helps calculate the power requirement based on the current readings of various equipment and appliances or the power supply voltage of the premises.
LED resistor calculator tells you what resistor you should use when connecting LEDs in series or parallel.