Unit Conversions
We have over 200 built-in commonly used units. Add more if you need them.
To convert units in Soulver use to or in or as followed by the unit you wish to convert into.
1
10 km in m | 10,000 m
2
5 hours 30 minutes to seconds | 19,800 seconds
3
100 pounds in kg | 45.36 kg
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Or alternatively:
1
meters in 10 km | 10,000 m
2
days in 3 weeks | 21 days
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Units Reference

Basic Units

Time
Length
Area
Volume
Mass
Temperature
Power
Speed
  • Seconds (s, secs)
  • Minutes (mins)
  • Hours (hr)
  • Days
  • Weeks
  • Months
  • Years
  • Milliseconds (ms)
  • Microseconds (µs)
  • Nanoseconds (ns)
Metric
  • Meters (m, metres)
  • Kilometers (km, kilometres)
  • Centimeters (cm, centimetres)
  • Millimeters (mm, millimetres)
  • Micrometers (µm, micrometres)
  • Nanometers (nm, nanometres)
Imperial
  • Inches
  • Feet (ft)
  • Yards (yd)
  • Miles (mi)
  • Furlongs (fur)
Space & Sea
  • Light years (ly)
  • Nautical Miles (NM)
  • Fathoms (ftm)
Metric
  • Square meters (m², m^2, m2)
  • Square kilometers (km², km^2, km2)
  • Square centimeters (cm², cm^2, cm2)
  • Square millimeters (mm², mm^2, mm2)
  • Square micrometers (µm², µm^2, µm2)
Imperial
  • Square Inches (in², sqin, in^2, in2)
  • Square feet (ft², sqft, ft^2, ft2)
  • Square yard (yd², sqyd, yd^2, yd2)
  • Square mile (mi², sqmi, mi^2, mi2)
Land
  • Acre (ac)
  • Hectare (ha)
  • Ares
Metric
  • Liters (L, liters, litres)
  • Kiloliters (kL)
  • Megaliters (ML)
  • Milliliters (mL)
  • Cubic Meters (m³, m3, m^3)
  • Cubic Kilometers (km³, km3, km^3)
  • Cubic Centimeters (cm³, cm3, cm^3)
  • Cubic Millimeters (mm³, mm3, mm^3)
  • Metric Cups (1 cup = 250 ml)
Imperial
  • Cubic Inches (in³, in3, in^3)
  • Cubic Feet (ft³, cuft, ft³, ft3,ft^3)
  • Cubic Yards (yd³, yd³, cuyd, yd3, yd^3)
  • Cubic Miles (mi³, mi³, mi3, mi^3, miles^3)
US Customary
  • Fluid ounces (fl oz)
  • Pints
  • Cups
  • Teaspoons (tsp)
  • Tablespoons (tbsp)
  • Quarts (qt)
  • Gallons (gal)
In Soulver's Units preferences you can choose whether US customary or imperial measurements are used for these units. Note that a "cup" is always the US customary cup. Use "metric cup" for the cup unit commonly used in Australia, NZ and Canada (250ml).
Other
  • Acre feet (af)
  • Bushels (bsh)
Metric
  • Grams (g)
  • Kilogram (kg)
  • Milligram (mg)
  • Nanogram (ng)
  • Metric Tons (t)
Imperial
  • Ounces (oz)
  • Pounds (lb)
  • Stones (st)
  • Short Tons (ton)
Precious Metals
  • Carats (ct)
  • Ounces troy (oz t)
  • Degrees celsius (°C, ºC, C, degC, celcius)
  • Degrees fahrenheit (°F, ºF, F, degF, fahrenheit)
  • Watts (w)
  • Kilowatts (kW)
  • Megawatts (MW)
  • Gigawatts (GW)
  • Terawatts (TW)
  • Millliwatts (mW)
  • Horsepower (hp)
  • Meters per second (m/s)
  • Kilometers per hour (km/h)
  • Miles per hour (mph)
  • Knots (kn)
Data Storage
Data Transfer
CSS
  • Bytes (B)
  • Bits (bit)
  • Yottabytes (YB)
  • Zettabytes (ZB)
  • Exabytes (EB)
  • Petabytes (PB)
  • Terabytes (TB)
  • Gigabytes (GB)
  • Megabytes (MB)
  • Kilobytes (kB)
  • Yottabits (Yb)
  • Zettabits (Zb)
  • Exabits (Eb)
  • Petabits (Pb)
  • Terabits (Tb)
  • Gigabits (Gb)
  • Megabits (Mb)
  • Kilobits (kb)
  • Yobibytes (YiB)
  • Zebibytes (ZiB)
  • Exbibytes (EiB)
  • Pebibytes (PiB)
  • Tebibytes (TiB)
  • Gibibytes (GiB)
  • Mebibytes (MiB)
  • Kibibytes (KiB)
  • Yobibits (Yib)
  • Zebibits (Zib)
  • Exbibits (Eib)
  • Pebibits (Pib)
  • Tebibits (Tib)
  • Gibibits (Gib)
  • Mebibits (Mib)
  • Kibibits (Kib)
  • Bytes per second (Bps)
  • Bits per second (bps)
  • Yottabytes per second (YBps)
  • Zettabytes per second (ZBps)
  • Exabytes per second (EBps)
  • Petabytes per second (PBps)
  • Terabytes per second (TBps)
  • Gigabytes per second (GBp)
  • Megabytes per second (MBp)
  • Kilobytes per second (KBp)
  • Yottabits per second (Ybps)
  • Zettabits per second (Zbps)
  • Exabits per second (Ebps)
  • Petabits per second (Pbp)
  • Terabits per second (Tbp)
  • Gigabits per second (Gbp)
  • Megabits per second (Mbp)
  • Kilobits per second (Kbp)
  • Yobibytes per second (YiBps)
  • Zebibytes per second (ZiBps)
  • Exbibytes per second (EiBps)
  • Pebibytes per second (PiBps)
  • Tebibytes per second (TiBps)
  • Gibibytes per second (GiBps)
  • Mebibytes per second (MiBps)
  • Kibibytes per second (KiBps)
  • Yobibits per second (Yibps)
  • Zebibits per second (Zibps)
  • Exbibits per second (Eibps)
  • Pebibits per second (Pibps)
  • Tebibits per second (Tibps)
  • Gibibits per second (Gibps)
  • Mebibits per second (Mibps)
  • Kibibits per second (Kibps)
  • Pixel (px)
  • Em
  • Pt
Note that CSS units are units of length, so you can convert them to and from other units of length, like inches
Frequencey
Energy
Angles
  • Hertz (hz)
  • Kilohertz (kHz)
  • Megahertz (MHz)
  • Gigahertz (GHz)
  • Terahertz (THz)
  • Millihertz (mHz)
  • Microhertz (µHz)
  • Nanohertz (nHz)
  • Joules (J)
  • Kilojoules (kJ)
  • Megajoules (MJ)
  • Gigajoules (GJ)
  • Calories (cal)
  • Kilocalories (kCal)
  • Watt seconds (W s)
  • Watt minutes (W m)
  • Watt hours (Wh)
  • Kilowatt hours (kWh)
  • Megawatt hours (MWh)
  • Gigawatt hours (GWh)
  • Terawatt hours (TWh)
  • Degrees (°)
  • Radians (rad)
Note that trigonometric functions assume radians by default.
sin (90) = 0.8939966636
sin (90 degrees) = 1

Notes on Units

Mixing Units & Plain Numbers

When mixing plain numbers with units, the nearest unit will be used automatically. This is called unit assimilation.
1
300 + 20 km | 320 km
2
$20 + 30 | $50.00
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Adding & Subtracting Mixed Units

When doing calculations with mixed unit types, the larger unit wins:
1
1km + 1,000m | 2 km
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When units don't share a common base unit, the last used unit wins:
1
$200 + €200 | €308.84
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Multiplying Units

Soulver only uses units that it knows about:
1
10m × 10m | 100 m² // a supported unit
2
3 kg × 3 liters | // Soulver will not give you "9 kg liters" here
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Soulver will instead make an implicit rate when a supported unit cannot be created through multiplication:
1
$30 × 4 days | $120.00
2
// the above is interpreted as $30/day × 4 days
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Unit Formatting

Soulver will use a unit's symbol in the answer, rather than its full name. Though you may use the full name in your expression:
1
10 kilometers in meters | 10,000 m
2
20 tablespoons in teaspoons | 60 tsp
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Adding Additional Units

You can add additional units to Soulver in the Calculator > Custom units preferences.
Custom units must be defined in terms of an existing unit.
Last modified 2mo ago