Formulas

International System (SI-System) Base Units Conversions factors Prefix
© TXM-MC™

SI-System Base units

Magnitude Unit  
Name Designation Name Designation Description
Length l, s 1 meter 1 m 1 meter is the length of the distance the light travels in vacuum during the time 1/299 792 458 second.
Mass m 1 gram 1 g
Time t 1 second 1 s Time is a measure in which events can be ordered from the past through the present into the future, and also the measure of durations of events and the intervals between them. Time is often referred to as the fourth dimension, along with the three spatial dimensions.
Current I 1 Ampere 1 A 1 Ampere is the size of the constant electric current, when it flows through two parallel, straight conductors of infinite extension positioned at a distance from each other by 1 meter in vacuum between these conductors make a force equal to 2×10-7 newtons per meter length of the leaders.
Temperature T 1 Kelvin 1 °K Kelvin is the temperature measured in space an also the absolute zero degree.
Luminosity L 1 Candelas 1 cd Candela is the SI base unit of luminous intensity; that is, luminous power per unit solid angle emitted by a point light source in a particular direction.
Joules per second 1 Js Measured in joules per second.
Joules per Watt 1 JW Measured in joules per watts.
Substance quantity n 1 Mol 1 Mol 1 mole is the amount of substance in a system containing as many system elements as there are atoms in 0.012 kilograms of carbon-12. The number is Avogado's number 6.022 × 1023 per mole.
© TXM-MC™

Conversions factors

Area
m2 dm2 cm2 mm2
1 100 10000 1000000
0.01 1 100 10000
0.0001 0.01 1 100
0.000001 0.0001 0.01 1
Volume
m3 dm3 cm3 mm3 dl cl ml
1 1000 106 109 104 105 106
0.001 1 1000 106 10 100 1000
10-6 0.001 1 1000 0.01 0.1 1
10-9 10-6 0.001 1 10-5 104 0.001
10-4 0.1 100 105 1 10 100
10-5 0.01 10 104 0.1 1 10
10-6 0.001 1 1000 0.01 0.1 1
Pressure
Pa bar kp/cm3 torr (mmHg) atm
1 10-5 1.01972×10-5 7.5006×10-3 9.8692×10-6
105 1 1.01972 750.06 0.98692
9.80665×104 0.980655 1 735.56 0.96784
133.322 1.33322×10-3 1.35951×10-3 1 1.31579×10-3
1.01325×105 1.01325 1.03323 760 1
Energy, Power
J kWh kpm kcal eV
1 2.77778 × 10-7 0.101972 2.38846 × 10-4 6.2415 × 1018
3.6 × 106 1 3.67098 × 105 859.845 2.2469 × 1025
9.80665 2.72407 × 10-6 1 2.34228 × 10-3 6.1208 × 1019
4.1868 × 103 1.1630 × 10-3 426.935 1 2.6132 × 1022
1.6022 × 10-19 4.4505 × 10-26 1.6338 × 10-20 3.8267 × 10-23 1
© TXM-MC™

Prefix

factor Unit Name
10-24 y Yokto
10-21 z Zepto
10-18 a Atto
10-15 f Femto
10-12 p Piko
10-9 n Nano
10-6 µ Micro
10-3 m Milli
10-2 c Centi
10-1 d Deci
101 da Deka
102 h Hekto
103 k Kilo
106 M Mega
109 G Giga
1012 T Terra
1015 P Peta
1018 E Exa
1021 Z Zetta
1024 Y Yotta
© TXM-MC™

Magnityde and Units with formula

Magnitude Name Typical Unit Formula
D Absorbed dose Gy, Grey
a Acceleration m/s2, Meter per secounds.
A Activity Bq, Becquerek
A Area A = w × h
W Work
E Luminance Y, Relative Luminance Y = YRED + YGREEN + YBLUE
Y = 0.2126R + 0.7152G + 0.0722B
p Density kg/m2, Kilogram per cubicmeter p = kg × m2/s2
H Dose Equivalent Sv, Sievert
P Power W, Watt P = U × I
Q Electric Charge C, Coulomb Q = I × t
U Voltage V, Volt U = I × R
I Current A, Ampere I = U / R
R Resistance Ω, Ohm R = U / I

Greek alphabet

Capitalized Lowered Name
Α α Alpha
Β β Beta
Γ γ Gamma
Δ δ Delta
Ε ε Epsilon
Ζ ζ Zeta
Η η Eta
Θ θ Theta
Ι ι Iota
Κ κ Kappa
Λ λ Lambda
Μ μ Mu
Ν ν Nu
Ξ ξ Xi
Π π Pi
Ρ ρ Rho
Σ σ Sigma
Τ τ Tau
Υ υ Upsilon
Φ φ Phi
Χ χ Chi
Ψ ψ Psi
Ω ω Omega
© TXM-MC™

Cyrillic Alphabet (RU)

Cyrillic Alphabet Capitalized (RU)

Char HTML (HEX) JavaScript Escape Java Escape Python Escape
А А "/u0410" "/u0410" u'\u0410'
Б Б "/u0411" "/u0411" u'\u0411'
В В "/u0412" "/u0412" u'\u0412'
Г Г "/u0413" "/u0413" u'\u0413'
Д Д "/u0414" "/u0414" u'\u0414'
Е Е "/u0415" "/u0415" u'\u0415'
Ё Ё "/u0401" "/u0401" u'\u0401'
Ж Ж "/u0416" "/u0416" u'\u0416'
З З "/u0417" "/u0417" u'\u0417'
И И "/u0418" "/u0418" u'\u0418'
Й Й "/u0419" "/u0419" u'\u0419'
К К "/u041A" "/u041A" u'\u041A'
Л Л "/u041B" "/u041B" u'\u041B'
М М "/u041C" "/u041C" u'\u041C'
Н Н "/u041D" "/u041D" u'\u041D'
О О "/u041E" "/u041E" u'\u041E'
П П "/u041F" "/u041F" u'\u041F'
Р Р "/u0420" "/u0420" u'\u0420'
С С "/u0421" "/u0421" u'\u0421'
Т Т "/u0422" "/u0422" u'\u0422'
У У "/u0423" "/u0423" u'\u0423'
Ф Ф "/u0424" "/u0424" u'\u0424'
Х Х "/u0425" "/u0425" u'\u0425'
Ц Ц "/u0426" "/u0426" u'\u0426'
Ч Ч "/u0427" "/u0427" u'\u0427'
Ш Ш "/u0428" "/u0428" u'\u0428'
Щ Щ "/u0429" "/u0429" u'\u0429'
Ъ Ъ "/u042A" "/u042A" u'\u042A'
Ы Ы "/u042B" "/u042B" u'\u042B'
Ь Ь "/u042C" "/u042C" u'\u042C'
Э Э "/u042D" "/u042D" u'\u042D'
Ю Ю "/u042E" "/u042E" u'\u042E'
Я Я "/u042F" "/u042F" u'\u042F'
© TXM-MC™

Cyrillic Alphabet (RU)

Cyrillic Alphabet Lowered (RU)

Char HTML (HEX) JavaScript Escape Java Escape Python Escape
а а "/u0430" "/u0430" u'\u0430'
б б "/u0431" "/u0431" u'\u0431'
в в "/u0432" "/u0432" u'\u0432'
г г "/u0433" "/u0433" u'\u0433'
д д "/u0434" "/u0434" u'\u0434'
е е "/u0435" "/u0435" u'\u0435'
ё ё "/u0451" "/u0451" u'\u0451'
ж ж "/u0436" "/u0436" u'\u0436'
з з "/u0437" "/u0437" u'\u0437'
и и "/u0438" "/u0438" u'\u0438'
й й "/u0439" "/u0439" u'\u0439'
к к "/u043A" "/u043A" u'\u043A'
л л "/u043B" "/u043B" u'\u0443B'
м м "/u043C" "/u043C" u'\u043C'
н н "/u043D" "/u043D" u'\u043D'
о о "/u043E" "/u043E" u'\u043E'
п п "/u043F" "/u043F" u'\u043F'
р р "/u0440" "/u0440" u'\u0440'
с с "/u0441" "/u0441" u'\u0441'
т т "/u0442" "/u0442" u'\u0442'
у у "/u0443" "/u0443" u'\u0443'
ф ф "/u0444" "/u0444" u'\u0444'
х х "/u0445" "/u0445" u'\u0445'
ц ц "/u0446" "/u0446" u'\u0446'
ч ч "/u0447" "/u0447" u'\u0447'
ш ш "/u0448" "/u0448" u'\u0448'
щ щ "/u0449" "/u0449" u'\u0449'
ъ ъ "/u044A" "/u044A" u'\u044A'
ы ы "/u044B" "/u044B" u'\u044B'
ь ь "/u044C" "/u044C" u'\u044C'
э э "/u044D" "/u044D" u'\u044D'
ю ю "/u044E" "/u044E" u'\u044E'
я я "/u044F" "/u044F" u'\u044F'
© TXM-MC™