# Calculator for the Electromagnetic Spectrum

## Convert wave length, frequency and energy

 Round to 0 1 2 3 4 5 6 7 8 9 10 11 12 13 decimal places Wave length λ: * 10^9 m, Gigameters 10^6 m, Megameters 10^3 m, Kilometers m, Meters 10^-3 m, Millimeters 10^-6 m, Micrometers 10^-9 m, Nanometers 10^-12 m, Pikometers 10^-15 m, Femtometers Frequency f: * Hz, Hertz 10^3 Hz, Kilohertz 10^6 Hz, Megahertz 10^9 Hz, Gigahertz 10^12 Hz, Terahertz 10^15 Hz, Petahertz 10^18 Hz, Exahertz 10^21 Hz, Zettahertz 10^24 Hz, Yottahertz Photon energy Ep: * 10^-15 eV, Femtoelektron-volts 10^-12 eV, Pikooelektron-volts 10^-9 eV, Nanoelektron-volts 10^-6 eV, Microelektron-volts 10^-3 eV, Millielektron-volts eV, Elektron-volts 10^3 eV, Kiloelektron-volts 10^6 eV, Megaelektron-volts 10^9 eV, Gigaelektron-volts Energy E: * 10^-33 J 10^-30 J 10^-27 J 10^-24 J, Yoktojoule 10^-21 J, Zeptojoule 10^-18 J, Attojoule 10^-15 J, Femtojoule 10^-12 J, Pikojoule 10^-9 J, Nanojoule Temperature at λmax: Photons per joule: Type:

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Formulas:
Planck constant h = 6.62606957*10-34 J*s
Speed of light c = 299792458 m/s
c = λ*f
Elektron-volt: 1 eV = 1.602176565*10-19 J
E = h*c / λ
Ep = E / (1.602176565*10-19)
T at λmax = 2,89776829 nm * Kelvin / λ (Wien's displacement law)
T at λmax is the temperature of a black body, whose radiation has a maximum at λ.
Photons per joule = 1 / (1.602176565*10-19 * Ep)

Table:
TypeSubtypeλfEpE
Low frequencyELF, extremely low frequency> 10 Mm< 30 Hz< 124 feV< 1.99*10-32 J
SLF, super low frequency10 Mm - 1 Mm30 Hz - 300 Hz124 feV - 1.24 peV1.99*10-32 J - 1.99*10-31 J
ULF, ultra low frequency1 Mm - 100 km300 Hz - 3 kHz1.24 peV - 12.4 peV1.99*10-31 J - 1.99*10-30 J
VLF, very low frequency100 km - 10 km3 kHz - 30 kHz12.4 peV - 124 peV1.99*10-30 J - 1.99*10-29 J
Radio wavesLF, low frequency10 km - 650 m30 kHz - 461 kHz124 peV - 1.91 neV1.99*10-29 J - 3.06*10-28 J
MF, mid frequency650 m - 180 m461 kHz - 1.67 MHz1.91 neV - 6.89 neV3.06*10-28 J - 1.1*10-27 J
HF, high frequency180 m - 10 m1.67 MHz - 30 MHz6.89 neV - 124 neV1.1*10-27 J - 1.99*10-26 J
VHF, very high frequency10 m - 1 m30 MHz - 300 MHz124 neV - 1.24 μeV1.99*10-26 J - 1.99*10-25 J
MicrowavesUHF, ultra high frequency
decimeter band
1 m - 10 cm300 MHz - 3 GHz1.24 μeV - 12.4 μeV1.99*10-25 J - 2 yJ
SHF, super high frequency
centimeter band
10 cm - 1 cm3 GHz - 30 GHz12.4 μeV - 124 μeV1.99 yJ - 19.9 yJ
EHF, extremely high frequency
millimeter band
1 cm - 1 mm30 GHz - 300 GHz124 μeV - 1.24 meV19.9 yJ - 199 yJ
Terahertz radiationSubmillimeter radiation1 mm - 100 μm300 GHz - 3 THz1.24 meV - 12.4 meV199 yJ - 1.99 zJ
Infrared radiationFar infrared100 μm - 50 μm3 THz - 6 THz12.4 meV - 24.8 meV1.99 zJ - 3.97 zJ
Mid infrared50 μm - 3 μm6 THz - 100 THz24.8 meV - 413 meV3.97 zJ - 66.2 zJ
Near infrared3 μm - 780 nm100 THz - 384 THz413 meV - 1.59 eV66.2 zJ - 255 zJ
Visible light      Red780 nm - 640 nm384 THz - 468 THz1.59 eV - 1.94 eV255 zJ - 310 zJ
Orange640 nm - 600 nm468 THz - 500 THz1.94 eV - 2.07 eV310 zJ - 331 zJ
Yellow600 nm - 570 nm500 THz - 526 THz2.07 eV - 2.18331 zJ - 349 zJ
Green570 nm - 490 nm526 THz - 612 THz2.18 eV - 2.53 eV349 zJ - 405 zJ
Blue490 nm - 430 nm612 THz - 697 THz2.53 eV - 2.88 eV405 zJ - 462 zJ
Violet430 nm - 380 nm697 THz - 789 THz2.88 eV - 3.26 eV462 zJ - 523 zJ
UltravioletNear UV, UVA380 nm - 315 nm789 THz - 952 THz3.26 eV - 3.94 eV523 zJ - 631 zJ
Near UV, UVB315 nm - 280 nm952 THz - 1.07 PHz3.94 eV - 4.43 eV631 zJ - 709 zJ
Near UV, UVC280 nm - 200 nm1.07 PHz - 1.5 PHz4.43 eV - 6.2 eV709 zJ - 993 zJ
Far UV200 nm - 50 nm1.5 PHz - 6 PHz6.2 eV - 24.8 eV993 zJ - 3.97 aJ
XUV, extreme UV50 nm - 1 nm6 PHz - 300 PHz24.8 eV - 1.24 keV3.97 aJ - 199 aJ
X-radiationSoft X-rays, SX1 nm - 100 pm300 PHz - 3 EHz1.24 keV - 12.4 keV199 aJ - 1.99 fJ
Hard X-rays, HX100 pm - 10 pm3 EHz - 30 EHz12.4 keV - 124 keV1.99 fJ - 19.9 fJ
Gamma radiationγ< 10 pm> 30 EHz> 124 keV> 19.9 fJ
Cosmic γ-rays< 4 pm> 75 EHz> 310 keV> 49.7 fJ

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