Unit Converters
149 tools · page 3 of 3
- Geohash to Lat/Lon Converter Decodes a geohash string into its center latitude and longitude with the cell's error bounds.
- Grains to Grams Converter From a grain count, the weight in grams and milligrams at 1 grain = 64.79891 mg, the unit still used for bullets and gunpowder charges.
- Hartree (Eh) to Electronvolts Converter Hartree, the atomic unit of energy in quantum chemistry, converted to electronvolts (27.211386 eV per hartree) and joules.
- Imperial gallons to US gallons Converter Imperial gallons (4.54609 L) restated in US gallons (3.78541 L) and litres, using the factor 1.20095042 between the two gallons.
- Imperial Pint to US Pint Converter Convert between imperial pints and US pints using 1 imperial pint = 1.20095 US pints.
- Jupiter Mass to Earth Mass Converter Converts between Jupiter masses and Earth masses in either direction, where 1 Jupiter mass = 317.8 Earth masses.
- Light-Second to Kilometer Converter Convert between light-seconds and kilometers using the exact speed of light (1 light-second = 299,792.458 km). Works in both directions.
- Long Tons to Tonnes Converter Convert imperial long tons to metric tonnes and kilograms (1 long ton = 1.016 t).
- MGRS to Lat/Lon Parser Converts a Military Grid Reference System string to WGS84 latitude and longitude, and shows its zone, 100 km square and easting/northing.
- Nanometers to Angstroms Converter Convert a length from nanometres to ångströms (1 nm = 10 Å) and picometres. A handy converter for chemistry, crystallography, optics and semiconductor work.
- Paper Weight (GSM to lb) Calculator Convert metric paper weight in gsm to US basis weights in pounds for text, cover, and bond stock.
- Pennyweights to Grams Converter The pennyweight, a twentieth of a troy ounce used for small jewelry items, given in grams (1.55517384 g each) and in 24 grains each.
- Picas to Inches Converter Picas, the layout unit of 12 points or 1/6 inch, expressed in inches and millimetres for column widths and margins.
- Rankine (°R) to Kelvin Converter Degrees Rankine, an absolute scale with Fahrenheit-sized degrees, converted to kelvin by 5/9 and then to Celsius.
- Réaumur (°Ré) to Celsius Converter Réaumur degrees, where water freezes at 0 and boils at 80, converted to Celsius (×1.25) and Fahrenheit (×2.25 + 32).
- Refrigeration Tons to kW Calculator Convert refrigeration capacity between refrigeration tons (RT) and kilowatts (kW) using the standard factor 1 RT = 3.516853 kW — useful for HVAC and industrial cooling system sizing.
- Rods (perches) to Metres Converter An old English length unit, the rod (also perch or pole) equals 5.0292 m or 16.5 ft, and the result appears in metres and feet.
- Rutherford to Becquerel Converter Convert radioactivity from rutherfords to becquerels and curies (1 Rd = 10⁶ Bq). An older activity unit.
- Solar Luminosity to Watt Converter Convert solar luminosity to watts and back, using the IAU nominal value 1 L☉ = 3.828×10²⁶ W.
- Solar Mass to Kilogram Converter Convert a mass in solar masses to kilograms and Earth masses (1 M☉ ≈ 1.989 × 10³⁰ kg). Handy for astronomy and astrophysics calculations.
- Span to Centimeter Converter Converts between spans and centimeters, where 1 span equals 22.86 cm (9 inches).
- Speed as a Fraction of c Calculator Convert any speed into a fraction of the speed of light (β = v/c), its percentage of c, and the Lorentz factor γ.
- Troy ounces to Grams Converter Troy ounces, the unit for gold, silver and other precious metals, expressed in grams (1 ozt = 31.1034768 g) and in ordinary avoirdupois ounces.
- US fluid ounces to Millilitres Converter US fluid ounces (29.5735 mL each), a volume measure larger than the UK fluid ounce, shown in millilitres and litres.
- US gallons to Imperial gallons Converter Shows how many imperial gallons and litres a given number of US gallons equals, since the imperial gallon is about 20% larger.
- US pints to Litres Converter The US liquid pint, an eighth of a US gallon, in litres and millilitres; it is smaller than the 568.26 mL UK pint.
- US quarts to Litres Converter A quarter of a US gallon, the US liquid quart, expressed in litres (0.946353 each) and millilitres, unlike the larger UK quart.
- US short tons to Tonnes Converter The 2,000-pound US short ton expressed in metric tonnes (0.90718474 t each) and in kilograms.
- Vershok to Centimeter Converter Converts the old Russian vershok unit to centimeters and back, where 1 vershok equals 4.445 cm.