Supported Units

Decipad supports the following units and compositions of them. Unless stated, units default to the international standard.

For example, when we say Inch we mean Inch (International), i.e. 0.0254 m.

All definitions are exact.

Some conversions (e.g. bohr radius) are not exact by definition.

Please bear that in mind when using our units. Approximations are marked with a * for your convenience

Unit prefixes

The standard metric unit prefixes are available in Decipad.

Length units

The default unit is Metre (meter).

The following are also supported:

• Mile (mile, mi) = 1609.344 m = 1,760 yards
• Yard (yard, yd) = 3 ft
• Foot (foot, ft) = 12 inches
• Inch (inch, in) = 0.0254 meters

Typography & Displays

• Point (American, English) (point, pt) = 1/72.272 inches
• Twip (twip) = 1/1440 inches
• Pica (pica) = 12 points

Nautical

• Nautical Mile (nauticalmile, nmi) = 1852 m
• Nautical League (nauticalleague, nl) = 3 nmi
• Fathom (fathom, ftm) = 6 ft

Natural Sciences

• Ångström (angstrom, Å) = 0.1 nm
• Attometre (attometre, am) = 1×10e−18 m
• Fermi (fermi, fm) = 0.000001 nm
• Bohr(*) (bohr, a0, a₀) = 5.29177210903e-11 m

Surveyor

• Furlong (furlong, fur) = 220 yd
• Chain (chain, ch) = 66 ft
• Rod (rod, rd) = 0.25 chain
• Link (link, lnk) = 7.92 inches

Astronomy

• Astronomical unit (austronomicalunit, au) = 1.495978707×10e11 m
• Light Year (lightyear, ly) = 9.4607304725808×10e15 m
• Light Day (lightday, ld) = 24 lh
• Light Hour (lighthour, lh) = 60 lm
• Light Minutes (lightminute) = 60 ls
• Light Second (lightsecond, ls) = 299792458 m
• Parsec (parsec, pc) = 30856775814913700 m

Fun

• Rope (rope) = 6.096 meters
• Hand (hand) = 4 inches
• Smoot (smoot) = 1,702 meters
• Marathon (marathon) = 42195 meters
• League (league, lea) = 4828 meters

It takes over 26 horse races to make a marathon.

Speed units

The default unit is Kilometer per hour (kph).

Kilometer per hour can be expressed as kilometer/hour and we support expanding (or contracting) any area unit to SI units, i.e. meters/second.

The following are also supported:

• Mile per hour (mph)
• Knot (knot) = 1 nmi/hour = 1.852 kilometer/hour

Area units

The default unit is Square Meter (squaremeter, m2, m²).

Square meter can be expressed as m2 and we support expanding (or contracting) any area unit to si units.

The following are also supported:

• Square Kilometer (squarekilometre, km2, km²) = 10e6 m2
• Square Mile (squaremile, sqmi) = 2,589,988.110336 m2 = 3,097,600 sqyd
• Square Yard (squareyard, sqyd) = 9 sqft
• Square Foot (squarefoot, sqft) = 144 sqin
• Square Inch (squareinch, sqin) = 0.00064516 m2

Natural Sciences

• Barn (barn, b) = 10e−28 m2

Surveyor:

• Hectare (hectare, ha) = 10,000 m2
• Are (are, a) = 100 m2
• Acre (acre, ac) = 4840 sqyd
• Barony (barony) = 4000 ac

Volume units

The default unit is Square Meter (cubicmeter, m3, m³).

Gallon can be expressed as m3 and we support expanding (or contracting) any volume unit to SI units.

The following are also supported:

• Liter (liter, l) = 0.001 m3
• Cubic Mile (cumi) ≡ 4168181825.440579584 m3
• Cubic Inch (in3, in³, cuin) = 16.387064×10e−6 m3
• Cubic Yard (yd3, yd³,cuyd) = 27 ft3
• Cubic Foot (ft3, ft³, cuft) = 1,728 sqin
• Acre Foot (acrefoot, acft) = 1 ac x 1 ft
• Ton (ton_displacement) = 0.99108963072 m3
• Gallon (Imperial) (gallon, gal) = 4.54609 liters
• Barrel (Imperial) (barrel, bl) = 36 gal
• Bushel (Imperial) (bushel, bu) = 8 gallons
• Bucket (Imperial) (bucket, bkt) = 4 gallons
• Pint (Imperial) (pint) = ≡ 1/8 gal
• Ounce (Imperial) (floz) = 28.4130625×10e−6 m3

Cooking:

• Cup (Metric) (cup) = 250×10e−6 m3
• Tea Spoon (Metric) (teaspoon, tsp) = 5×10e−6 m3
• Table Spoon (Metric) (tablespoon, tbsp) = 3 tsp
• Pinch (Metric) (pinch) = 1/16 tsp
• Dash (Metric) (dash) = 1/2 pinch

Pressure units

The default unit is Atmosphere (atmosphere, atm).

Pascal can be expressed as kg⋅meter−1⋅s−2 and we support expanding (or contracting) any pressure unit to SI units.

The following are also supported:

• Pascal (pascal, pa) = 1/101325 atm
• Bar (bar, ba) = 105 Pa
• Torr (torr, mmHg) = 1/760 atm
• Pound per square inch(*) (psi) =

Energy units

The default unit is Joule (Joule, J).

Joule can be expressed as kg⋅m2⋅s−2 and we support expanding (or contracting) any energy unit to SI units.

The following are also supported:

• Calorie (calorie, cal) = 4.1868 J
• Watt hour (Wh) = 3600 J

Force units

The default unit is Newton (newton, N). Newton is expressed as 1 kg⋅m⋅s−2 and we support expanding (or contracting) any force unit to SI units.

Mass units

The default unit is Gram (g, gr).

The following are also supported:

• Tonne (tonne) = 1000 kg
• Ton (ton) = 2240 lbav
• Pound (Imperial) (lbav) = 0.45359237 kg
• Ounce (Imperial) (ozav) = 1⁄16 lbav
• Ounce (US food nutrition labelling) (oz) = 28 g

Temperature units

The default unit is Kelvin (kelvin, K).

The following are also supported:

• Celsius (celsius, °c) = [K] ≡ [°C] + 273.15
• Fahrenheit (fahrenheit, °f) = [K] ≡ ([°F] + 459.67) × 5⁄9

Time units

The default unit is Second (second, sec, s).

The following are also supported:

• Year (year, y) = 12 months
• Month (month, m) = 1/12 year
• Week (day, day) = 7 days
• Day (day, day) = 24 h
• Hour (hour, h) = 60 minutes
• Minutes (minute, m) = 60 s

Frequency units

The default unit is Newton (hertz, Hz).

Hertz can be expressed as s−1 and we support expanding (or contracting) any frequency unit to SI units.

Information units

The default unit is Bit (bit).

Byte (byte) is also available and defined as 8 bits.

Currently we don't support binary unit prefixes.

Power units

The default unit is Watt (watt, W).

Watt can be expressed as kg⋅m2⋅s−3 and we support expanding (or contracting) any power unit to SI units.

Substance units

The default unit is Mole (mole, mol).

Electric current units

The default unit is Watt (ampere, A).

Watt can be expressed as kg⋅m2⋅s−3⋅A−2 and we support expanding (or contracting) any electrical current unit to SI units.

Electric charge units

The default unit is Coulomb (coulomb, C).

Coulomb can be expressed as s⋅A and we support expanding (or contracting) any electric charge unit to SI units.

Electrical capacitance

The default unit is Farad (farad, F).

Farad can be expressed as kg−1⋅m−2⋅s4⋅A2 and we support expanding (or contracting) any electrical capacitance unit to SI units.

Electrical resistance

The default unit is Omh (omh, Ω).

Ohm can be expressed as kg⋅m2⋅s−3⋅A−2 and we support expanding (or contracting) any electrical resistance unit to SI units.

Electrical conductance

The default unit is Siemens (siemens).

Siemens can be expressed as kg−1⋅m−2⋅s3⋅A2 and we support expanding (or contracting) any electrical conductance unit to SI units.

Voltage

The default unit is Volt (volt, V).

Volt can be expressed as kg⋅m2⋅s−3⋅A−1 and we support expanding (or contracting) any voltage unit to SI units.

Luminous Intensity

The default unit is Candela (candela, cd).

Luminous Flow

The default unit is Lumen (lumen, lm).

Lumen can be expressed as cd⋅sr and we support expanding (or contracting) any luminous flow unit to SI units.

Solid Angle

The default unit is Lumen (steraradian, sr).

Angles

The default unit for angles is radians (radian, rad). Alternatively, you can use degrees (degree, °).

Currency

Currencies can be expressed as their symbol or by their name.

List of supported currencies

Currency	Name	Symbol
🇺🇸 United States dollar	USD	$
🇪🇺 Euro	EUR	€
🇯🇵 Japanese yen	JPY	¥
🇬🇧 Pound sterling	GBP	£
🇦🇺 Australian dollar	AUD	A$
🇨🇦 Canadian dollar	CAD	C$
🇨🇭 Swiss franc	CHF	CHF
🇨🇳 Renminbi	CNY	¥
🇭🇰 Hong Kong dollar	HKD	HK$
🇳🇿 New Zealand dollar	NZD	NZ$
🇸🇪 Swedish krona	SEK	kr
🇰🇷 South Korean won	KRW	₩
🇸🇬 Singapore dollar	SGD	S$
🇳🇴 Norwegian krone	NOK	kr
🇲🇽 Mexican peso	MXN	$
🇮🇳 Indian rupee	INR	₹
🇷🇺 Russian ruble	RUB	₽
🇿🇦 South African rand	ZAR	R
🇹🇷 Turkish lira	TRY	₺
🇧🇷 Brazilian real	BRL	R$
🇹🇼 New Taiwan dollar	TWD	NT$
🇩🇰 Danish krone	DKK	kr
🇵🇱 Polish złoty	PLN	zł
🇹🇭 Thai baht	THB	฿
🇮🇩 Indonesian rupiah	IDR	Rp
🇭🇺 Hungarian forint	HUF	Ft
🇨🇿 Czech koruna	CZK	Kč
🇮🇱 Israeli new shekel	ILS	₪
🇨🇱 Chilean peso	CLP	CLP$
🇵🇭 Philippine peso	PHP	₱
🇦🇪 UAE dirham	AED	د.إ
🇨🇴 Colombian peso	COP	COL$
🇸🇦 Saudi riyal	SAR	﷼
🇲🇾 Malaysian ringgit	MYR	RM
🇷🇴 Romanian leu	RON	L
🇺🇦 Ukrainian hryvnia	UAH	₴