Quick check: 1 foot is roughly 30 centimeters.
China note: 1 jin (市斤) is exactly 500 grams.
Quick check: 1 cubic foot equals 1,728 cubic inches.
Quick check: 1 quart is just under 1 liter.
Room temperature: 68–72°F is about 20–22°C.
Decimal units use powers of 1000; binary units use powers of 1024.
Quick Reference
Length
- 1 inch
- 2.54 cm
- 1 foot
- 30.48 cm
- 1 yard
- 0.9144 m
- 1 mile
- 1.609 km
Weight
- 1 ounce
- 28.35 g
- 1 pound
- 0.4536 kg
- 1 US ton
- 907.2 kg
- 1 kilogram
- 2.205 lb
Liquid Volume
- 1 fluid ounce
- 29.57 mL
- 1 US cup
- 236.59 mL
- 1 US quart
- 0.946 L
- 1 US gallon
- 3.785 L
Temperature
- Water freezes
- 32°F / 0°C
- Body temperature
- 98.6°F / 37°C
- Hot summer day
- 95°F / 35°C
- Water boils
- 212°F / 100°C