All conversion factors at a glance
Instead of opening ten different converters, see every factor in one matrix. Each cell is a clickable link to the full converter for that pair.
Why comparison tables?
When you work with several related units at once — an engineer converting meters, feet, and inches together, or a cook juggling cups, tablespoons, and milliliters — a matrix saves time. Every factor is in one place and pre-computed.
All factors follow NIST and BIPM international standards to 8 significant figures. Tap any cell to open the full converter for that conversion.
Choose a category
Length
15 units · 210 conversionsm · km · cm · mm · mi · yd...
Weight
12 units · 132 conversionskg · g · mg · µg · lb · oz...
Volume
15 units · 210 conversionsL · ml · m³ · gal (US) · gal (UK) · fl oz...
Temperature
4 units · 12 conversions°C · °F · K · °R
Area
12 units · 132 conversionsm² · km² · cm² · mm² · ha · ac...
Time
10 units · 90 conversionss · ms · min · h · d · wk...
Speed
10 units · 90 conversionskm/h · m/s · mph · kn · Ma · ft/s...
Energy
10 units · 90 conversionsJ · kJ · MJ · kWh · Wh · cal...
Pressure
10 units · 90 conversionsPa · kPa · MPa · bar · mbar · psi...
Power
8 units · 56 conversionsW · kW · MW · hp · PS · BTU/h...
Data
8 units · 56 conversionsb · B · KB · MB · GB · TB...