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Economy

Annuity	Calculates what the cost of an annuity loan will be depending on the loan period.
Cost of capital	Calculates what the interest rate will be and is used in investment calculations.
Lcc	Do an economic analysis if a measure is profitable.
Net present value	Calculates the present value of an investment depending on the time spent.
Payoff	Calculates the payoff or payback time of the current investment.
Real interest rate	Calculating the real interest rate becomes the nominal interest rate and inflation is available.

Electricity

Lighting
	Calculation points	Calculates the maximum distance between measuring points to be used to calculate the illuminance.
	Illuminance	Calculates the illuminance depending on the values available.
	Glare	Calculates values for estimating the glare risk of luminaires outdoors and indoors.
	Luminous flux	Calculates the luminous flux depending on the values available.
	Luminosity	Calculates luminosity depending on the values available.
	Spatial angle	Calculates the spatial angle from a lighting point.
Solar cell
	Global radiation	Beräknar den globala strålningen som träffar solcellsmodulen.
	Shading	Calculates various effects that occur due to shading of the solar cell.
	Solar cell temperature	Calculates the temperature of the solar panel depending on how it is positioned.
	Solar power	Calculates the magnitude of power for a solar module using solar radiation.
Capacitance		Calculates the capacitance depending on the data available..
Charge		Calculates the charge depending on the values available.
Conductance		Calculate the magnitude of the inductance of an electrical line.
Electrical power		Calculates electric power depending on the values that are available.
Frequency		Calculates the frequency depending on the values available.
Ground fault currents		Calculates the ground fault currents for the air line and cable respectively.
Inductance		Calculate the magnitude of the inductance of an electrical line
Interleaving		Calculates the total effect over the course of the day.
Ohm's law		Calculates the relationship between resistance, voltage and current.
Resistance		Calculates the resistance and resistivity of different materials.
Resistor		Calculates different time out for different time dependent conditions.
Surge protector		Calculates the risk level for whether protection against thunderbolt voltage is needed.
Voltage drop		Calculates the voltage drop on a line when the current or power is known.

Energy & Enviroment

AHU energy	Calculates the annual energy consumption of a air handling unit.
Sun shielding	Calculates the solar transmittance for different variants of solar shielding.
TEWI	Calculates the Total Equivalent Warming Impact number to be able to compare different cooling and heat pump systems.
Transmission	Calculates the transmission losses for a room.
Transport emissions	Calculates energy consumption and carbon dioxide emissions for different types of transport.
U-value	Calculates the u-value depending on the material structure.

Moisture

Dew point	Calculating the dew point for the actual case.
Evaporation	Calculates the amount of water evaporation depending on the pool type and size.
Humidity	Calculates how much water there can be in the air before it is condensed.
Mollier diagram	A graphic representation of the relationship between air temperature, moisture content and enthalpy.

Gas

Compressed air
	Buffer volume	Calculates the buffer volume required to the compressor.
	Consumption	Calculates how much compressed air consumption becomes dependent on what is connected to the system.
	Free flow	Calculates the free flow from the normal flow depending on temperature and pressure.
	Pressure drop	Calculates the pressure drop per meter in the current pipe depending on flow, pipe material and dimension.
Steam
	Condensate	Provide an estimate of the amount of condensate in a pipe system.
	KV-value	Calculates the kv-value for the current valve in the steam system.
	Steam quantity	Make an estimate of the amount of steam in a pipe system.
Carbon dioxide emissions		Calculates the amount of carbon dioxide emissions for different types of energy.
Gas bottles		Calculates how large the usable volume in a gas bottle is, as well as a compilation of different sizes and colors of gas bottles.
Ideala gaslagen		Calculates the pressure, volume, temperature or amount of substance for an ideal gas.
KV-value		Calculates what the Kv-value of a valve in a gas system will depend on flow and pressure.
Vacuum pump		Calculates the flow at the minimum flow a vacuum pump needs to lower the pressure within the desired time.

Classification

Sprinkler classifications

ATEX	Compilation of commonly used ATEX ratings.
Cleanliness	Compilation of the various cleanliness classes commonly used.
Corrosivity class	Compilation of the various corrosivity classes commonly used.
Filter classification	Compilation of the various filter classes commonly used.
Fire technical classes	Compilation of the various fire technical classes commonly used.
IP-classes	Compilation of the different IP classes that exist and how they are defined.
Compilation of the various classifications available for sprinklers.

Climate

Carbon dioxide	Calculates the carbon dioxide content in relation to the business and the personal load on the premises.
Downdraft	Calculates the size of the cold race from a cold surface and whether the convection from the radiator is sufficient.
Lokalt termiskt obehag	Calculates the percentage of a group of people who are supposed to complain due to different local phenomena.
Hygienic limit values	Calculates the total hygienic limit value for a number of different substances and test cases.
Wind chill	Calculates the impact of the wind on the perceived temperature.

Construction

Bending	Calculates the moment of inertia and bending resistance for a number of different geometries.
Buckling	Calculate the different cracking cases found in accordance with Euler.
Elasticity module	Calculates the modulus of elasticity depending on the strain and tension contained in the material.
Joint	Calculates how much load a joint can take.
Shear stress	Calculates the shear stress depending on the force and area of the cross section.
Statics	Calculates loads and torques for a number of different load cases.
Torsion	Calculates the torque and torque resistance for a number of different geometries.
Wind load	Calculates the wind pressure/load that affects the building in question.

Convert

Angle	Converts between different angular units used in the different calculations.
Area	Converts between different area units commonly used in the different calculations.
Energy	Converts between different energy units commonly used in the various calculations.
Flow	Converts between different flow units commonly used in the different calculations.
Inch till DN	Comparison table between inches and DN commonly used for oiled tubes.
Length	Converts between different length units commonly used in the different calculations.
Power	Converts between different power units commonly used in the different calculations.
Temperature	Converts between different temperature units commonly used in the various calculations.
Time	Converts between different time units commonly used in the various calculations.
Pressure	Converts between different pressure units commonly used in the various calculations.
Velocity	Converts between different common velocity units.
Viscosity	Converts between dynamic and kinematic viscosity.
Volume	Converts between different volume units commonly used in the various calculations.

Sound

Fan noise	Calculates how high the sound power level a fan creates depending on how much pressure it creates.
Filter	Calculates the sound using the more common A, B and C filter corrections used.
Frequency	Calculates the sound frequency depending on the time interval and the critical frequency.
Reduction number	Calculates the reduction number for a simple wall, ie how much the wall dampens the sound.
Silencing	Calculates how much the sound is attenuated by the sound attenuation measure.
Sound generation	Calculates how much sound is generated as the air passes.
Sound summation	Summarizes a number of different audio sources into a single audio source.
Sound pressure	Calculates how large the sound pressure converted from the sound effect becomes at a distance from the sound source.
Step sound	Calculates the step sound through a floor joist depending on its structure.
Transfer unit	Calculates how much an overhead device degrades a wall in terms of sound.

Ventilation

Space specific
	Battery ventilation	Calculates the flow needed to vent a battery room or battery locker to keep the hydrogen concentration below the Lower Explosive Limit (LEL).
	Commercial kitchen	Provides the opportunity to estimate how much ventilation a kitchen may need.
	Curtain heater	Calculates the air flow needed for a curtain heater to prevent cold draft.
	Garage ventilation	Calculates an estimate of the airflow needed to ventilate a garage.
	OP-ventilation	Calculates the minimum flow needed to achieve a certain particle concentration in an operating room.
	Transformer	Calculates the air flow needed to ventilate a room with a transformer.
Dilution		Calculates how long it will take to get the pollution content in a room.
Duct		Calculates flow or velocity and pressure drop through a circular or rectangular duct.
Duct weight		Calculates the weight of one channel per meter of inculsive media and isolation.
K-factor		Calculate what k-factor it will be over the current ventilation device.
Leakage		Calculates the leak depending on the tightness class of the duct system.
Mixing temperature		Calculates the mixing temperature of different subflows with different temperatures that converge in a common duct.
Fan laws		Calculates how flow, pressure and power vary with the flow on the same fan and working line.
Flow type		Calculates whether the airflow is laminar or turbulent in the current duct.
Heat exchanger		Calculates the efficiency of a heat exchanger.
Louvres		Calculates speed through circular and rectangular louvres.
Natural ventilation		Calculates the thermal momentum of a natural ventilation system.
SFP		Calculates the specific electrical power of an air handling unit.
Power		Calculates how large the power demand for the ventilation system is.
Temperature increase		Calculates how much the temperature is raised via the fan.

Piping

Fire water
	Hose formula	Calculates how large the pressure loss through a fire hose can be.
	Hose volume	Calculates how much water can be contained in the fire hose.
	Reaction force	Calculates the reaction force generated by the jet nozzle.
	Testing	Calculates flow at different unit beamlines for different available pressures.
Stormwater
	Gutter	Calculates the amount of stormwater a drain pipe can and the gutter can handle.
	Leveling buffer	Calculates the volume and number of modules for a leveling buffer for a stormwater system.
	Likely flow	Calculate the likely flow of stormwater from a surface.
	Open drain	Calculates the water flow in an open drain according to Manning.
Sewage
	Buffer volume	Calculates the requisite volume of buffer for temporary storage of waste water.
	Capacity	Calculates the capacity of the current wastewater pipeline.
	Grease trap	Calculates the nominal size of the fat separator needed for the current plant.
	Greywater heat exchange	Calculates the potential saving with greywater heat exchanger.
	Likely flow	Calculates the likely flow in a sewage water pipe.
	Pipe slope	Calculates the height of the waste water pipe with a slope.
	Sewage norm flow	Calculates the total norm flows for various connected appliances to the wastewater system.
	Oil separator	Calculates the nominal size of the oil separator needed for the current plant.
Sprinkler
	Color marking	A compilation of how sprinkler heads are color marked by activation temperature.
	Sprinkler flow	Calculates the water flow coming from a sprinkler head.
	Wait time for sprinkler	Calculating time alternatively pipe length for the flow to reach the sprinklerhead.
Tapwater
	Accumulation	Calculates the volume and power requirements of a hot water storage tank.
	Likely flow	Calculates how large the likely the tap water flow will be.
	Mixing flow	Calculates how much hot tap water flow is needed in the tap.
	Hot water circulation	Calculates the flow of hot water circulation in a tap hot water system.
	Meter	Flow conversion as well as things to consider when choosing tap water meters.
	Norm flow	Calculates the total norm flows for tap water connected devices.
	Wait time	Calculates how long it takes for hot water to reach the tap.
Affinity laws		Calculates the flow, pressure and power varies with the flow in the pump.
COP		Calculates the size of the cold factor or COP for the current device.
Culvert pipe		Calculates the amount of heat loss in ground-laid culverts.
Expansion vessel		Calculates the size of an expansion vessel depending on the pressure in the system.
Flow type		Calculates whether the flow is laminar or turbulent.
Heat exchanger		Calculates the efficiency of the current on the heat exchanger depending on temperatures.
Heat output		Calculates the amount of heat output from a radiator and values for older existing models.
KV-value		Calculates the kv value for the current valve depending on pressure and flow.
Mixing temperature		Calculates the temperature of mixing of different flow becomes one.
NPSH		Calculates the suction height of a pump to prevent cavitation.
Power		Calculates the effect or the different temperatures for a heating system.
Thermal expansion		Calculates the large length extension of a pipe depending on the temperatures the media has.
Pipe weight		Calculates the weight of one tube per meter of inculsive media and insulation.
Pipe volume		Calculates the volume of media in a pipe system.
Pool heating		Calculates how long it takes to heat a pool to the desired temperature.
Pressure drop		Calculates the pressure drop per meter in the current pipe.
Pressure stroke		Calculates the shortest time a valve can close without causing any pressure in the line.
Pump power		Calculates the amount of electrical power for the current pump.
Shunt		Beräknar hur stort flödet på primärsidan i en shunt blir.
Valve authority		Calculates the valve authority for the current valve depending on the pressure drop in the system.

Other

Terms
	Hazard pictogram	A compilation of the various danger symbols used.
	Greek alphabet	Displays a compilation of the Greek alphabet that is often used for different quantities.
	Prefix	Displays a number of the different prefixes that are commonly used.
	SI-enheter	Recounts and defines the various SI units that are applicable.
	Units	A compilation of a number of different devices used on the page.
Geometry
	Circle	Calculates geometries for a circle depending on available dimensions.
	Cone	Calculates geometries for a cone depending on the dimensions available.
	Pyramid	Calculates geometries for a pyramid depending on the dimensions available.
	Rectangle	Calculates geometries for a rectangle depending on the dimensions available.
	Triangle	Calculates geometries for a triangle depending on available dimensions.
Material properties
	Air	A collection of a number of different physical properties of air.
	Periodical table	An overview of the various elements that are presented in a periodical system.
	Refrigerant	Properties of a number of the more common refrigerants used.
	Substance amount	Calculates the amount of substance in the gas depending on the mass and molar mass of the substance.
	Steam	A compilation of a number of different physical properties of steam.
	Water	A compilation of a number of different physical properties of water.
Combustion		Calculates the amount of oxygen, the amount of air and the amount of flue gas in combustion.
Measuring accuracy		Calculates the accuracy of a measuring instrument depending on the various deviations that may occur.

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