Some conversions I do over and over and over and over in my head. Others are just nifty. So I'm finally going to write them down. And you thought I was random before?
Length
- 1 mile = 5280 feet
- 1 mile = 80 chains
- 1 chain = 66 feet
- 1 foot = 30.5 cm
- 1 land league = 4.83 km
- 1 nautical league = 5.56 km
- 1 hair's bredth = 0.1 mm
- 1 hand = 4 inches
Area
- 1 acre = 209 ft x 209 ft
- 1 hectare = 100 m x 100 m
Volume
- 1 inch³ = 16.387 cc
- 1 foot³ = 28.317 L
- 1 foot³ = 1728 inch³
- 1 gallon = 231 inch³
Weight
- 1 ounce = 28.3 g
Cooking
- 1 quart = 4 cups
- 1 pint = 2 cups
- 1 cup = 16 TBSP
- 1 cup = 237 mL
- 1 TBSP = 3 TSP
- 1 liquid ounce = 1/8 cup
- 1 shot = 1 liquid ounce
- 2 pinches = 1/8 TSP
- 1 dash = 1/8 TSP
- 20 drops = 1 mL
- 1 pound butter = 2 cups
Speed
- 1 m/s = 3.6 km/h
- speed of sound = ~340m/s
Temperature
- -40 C = -40 F
- 0 C = 32 F
- 100 C = 212 F
Numbers
- 1 Dozen = 12
- 1 Baker's dozen = 13
- 1 Gross = 1 Dozen Dozen = 144
- 1 Score = 20
Roman Numerals
- • = 1/12
- S = 1/2
- N = 0
- I = 1
- V = 5
- X = 10
- L = 50
- C = 100
- D = 500
- M = 1000
Density
- Water = 1g/cm³
- Concrete = 2.3g/cm³
- Steel = 7.85g/cm³
- Aluminum = 2.7g/cm³
- Gravel = 2.75g/cm³
- Styrofoam = 0.075g/cm³
- Gold = 19.32g/cm³
PVC Pipe (schedule 40)
| Dia inch |
OD inch |
Wall inch |
Area inch² |
Max psi |
|---|---|---|---|---|
| ½ | 0.840 | 0.109 | 0.304 | 600 |
| ¾ | 1.050 | 0.113 | 0.533 | 480 |
| 1 | 1.315 | 0.133 | 0.864 | 450 |
| 1¼ | 1.380 | 0.140 | 1.496 | 370 |
| 1½ | 1.900 | 0.145 | 2.036 | 330 |
| 2 | 2.375 | 0.154 | 3.356 | 300 |
| 2½ | 2.875 | 0.203 | 4.788 | 280 |
| 3 | 3.500 | 0.216 | 7.393 | 260 |
| 4 | 4.500 | 0.237 | 12.730 | 220 |
Max Psi Based on Temp
PVC Pipe (schedule 40)
- 23 C = 100%
- 27 C = 90%
- 32 C = 75%
- 38 C = 62%
- 43 C = 50%
- 49 C = 40%
- 54 C = 30%
- 60 C = 22%
Wire Guage
- 28 guage = 1.4 amps
- 24 guage = 3.5 amps
- 20 guage = 11 amps
- 18 guage = 16 amps
- 16 guage = 22 amps
- 14 guage = 32 amps
- 10 guage = 55 amps
- 8 guage = 73 amps
- 6 guage = 101 amps
- 4 guage = 135 amps
- 2 guage = 181 amps
- 1 guage = 211 amps
- 0 guage = 245 amps
- 00 guage = 283 amps
- 000 guage = 328 amps
Metal Minimum Tensile Strength
Sheer = 60% * Tensile
- Mild steel = 55 ksi
- Stainless steel 303 = 85 ksi
- Stainless steel 304 = 75 ksi
- Stainless steel 309 = 75 ksi
- Stainless steel 316 = 75 ksi
- Stainless steel 321 = 75 ksi
- Stainless steel 416 = 80 ksi
- Stainless steel 420 = 95 ksi
- Stainless steel 440F Se = 100 ksi
- Aluminum 2014-T4, -T451 = 62 ksi
- Aluminum 2014-T6, -T651 = 70 ksi
- Aluminum Alclad 2014-T3 = 63 ksi
- Aluminum Alclad 2014-T4, -T451 = 61 ksi
- Aluminum Alclad 2014-T6, -T651 = 68 ksi
- Aluminum 2024-T3 = 70 ksi
- Aluminum 2024-T361 = 72 ksi
- Aluminum 2024-T4, T351 = 68 ksi
- Aluminum 2024-T6 = 69 ksi
- Aluminum 2024-T81, -T851 = 70 ksi
- Aluminum 2024-T861 = 75 ksi
- Aluminum 6013-T8 = 64 ksi
- Aluminum 7075-T6, -T651 = 83 ksi
Shoe Sizes
