Everyday

m

Length

Meters, feet, inches, miles, kilometers

100 km to miles6 ft to meters12 in to cm

kg

Weight

Kilograms, pounds, ounces, grams

1 kg to pounds150 lbs to kg100 g to oz

°C

Temperature

Celsius, Fahrenheit, Kelvin

100 °C to °F72 °F to °C0 K to °C

L

Volume

Liters, gallons, cups, milliliters

1 gal to liters500 ml to cups1 L to fl oz

m²

Area

Square meters, acres, hectares, sq ft

1 acre to m²100 m² to sq ft1 ha to acres

s

Time

Seconds, minutes, hours, days, weeks, years

1 day to hours1 year to days60 min to seconds

cup

Cooking

Pinches, teaspoons, tablespoons, cups, grams

1 cup to tbsp1 oz to grams1 tbsp to tsp

kg/m³

Density

kg/m³, g/cm³, g/mL, lb/ft³, lb/gal

1 g/cm³ to kg/m³62.4 lb/ft³ to kg/m³1 g/mL to lb/gal

Science & Engineering

J

Energy

Joules, calories, kilowatt-hours, BTU

1 kcal to J1 kWh to J100 cal to J

W

Power

Watts, kilowatts, horsepower, BTU/hour

1 hp to watts1 kW to hp1000 W to kW

N

Force

Newtons, kilonewtons, pounds-force, dynes

1 N to lbf1 kgf to N1 kN to N

Pa

Pressure

Pascal, bar, PSI, atmospheres

1 atm to Pa30 PSI to bar1013 hPa to atm

Hz

Frequency

Hertz, kilohertz, megahertz, gigahertz, RPM

1 GHz to MHz60 RPM to Hz1 MHz to kHz

deg

Angle

Degrees, radians, gradians, arcminutes

180 deg to rad1 rad to deg90 deg to grad

N·m

Torque

N·m, lb·ft, kgf·m, in·lb, dyn·cm

1 N·m to lb·ft100 lb·ft to N·m1 kgf·m to N·m

C

Electric Charge

Coulombs, mAh, Ah, microcoulombs

1 Ah to C1000 mAh to C1 C to mAh

lx

Illuminance

Lux, foot-candles, phots, millilux, kilolux

1000 lux to fc1 fc to lux1 phot to lux

Pa·s

Viscosity

Pascal-seconds, centipoise, poise

1 Pa·s to cP1 cP to Pa·s1 P to Pa·s

A

Electric Current

Amperes, milliamperes, microamperes, kiloamperes

1 A to mA500 mA to A1 kA to A

V

Voltage

Volts, millivolts, microvolts, kilovolts, megavolts

1 V to mV1 kV to V1 MV to kV

Bq

Radioactivity

Becquerels, curies, millicuries, rutherfords

1 Ci to Bq1 MBq to mCi1 GBq to Ci

dB

Sound Level

Decibels, bels, nepers

10 dB to bel1 Np to dB1 bel to Np

lm

Luminous Flux

Lumens, millilumens, kilolumens

1000 lm to klm1 klm to lm1 lm to mlm

Digital

GB

Data Storage

Bytes, kilobytes, megabytes, gigabytes, terabytes

1 GB to MB1 TB to GB1 MB to KB

Mbps

Data Transfer Rate

Bits/s, Kbits/s, Mbits/s, Gbits/s, MB/s

100 Mbps to MB/s1 Gbps to Mbps10 MB/s to Mbps

PPI

Pixel Density

PPI, PPCM, DPMM for screens and print

300 PPI to PPCM72 PPI to PPCM10 DPMM to PPI

px

Typography

Pixels, points, em, rem with configurable DPI

16 px to rem12 pt to px1 em to px

Transport

m/s

Speed

Km/h, mph, knots, meters per second

100 km/h to mph60 mph to km/h1 knot to m/s

mpg

Fuel Economy

MPG (US), MPG (UK), L/100km, km/L

30 MPG to L/100km8 L/100km to MPG25 MPG to km/L

min/km

Pace

min/km, min/mile, s/100m, s/100yd

5 min/km to min/mi8 min/mi to min/km30 s/100m to min/km