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site last updated:

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~ Commonly Used Lapidary Unit Conversions ~

Converting from Grams and Other Weight and Mass Conversions:
Use this reference when using balances and scales to convert from grams to other units.

Symbol To Convert Grams (g) To: Multiply By:
carat Carats 5.0
dwt Pennyweight 0.6430149
oz Troy Ounces (precious metals) 0.03215075
oz Avoirdupois Ounces (commerce) 0.03527396
dram Apothecaries (pharmaceutical)  0.257202
gr Grains 15.43236
Weight and Mass Online Calculator from Science Lab

Converting from Millimeters Plus other Length and Distance Conversions:
Use this reference when measuring to convert between inches and other size units.

Symbol

To Convert Millimeters (mm) To:

Multiply By:
in inches .03937
µ microns 1000
cm centimeters 0.1
Symbol To Convert Inches (in) To: Multiply By:
mm millimeters 25.4
cm centimeters 2.54
µ microns 25,400
Inch Fractions as Decimal Equivalents and Their Millimeter Conversions
as fraction as its decimal equivalent converted to millimeters
1/64 0.01563 0.39688
1/32 0.03125 0.79375
1/16 0.0625 1.5875
1/8 0.125 3.175
3/16 0.1875 4.7625
1/4 0.250 6.350
5/16 1.3125 7.9375
1/2 0.50 12.7
Length and Distance Online Calculator from Science Lab

Converting from Millimeters Plus other Length and Distance Conversions:
Use this reference when measuring to convert between inches and other size units.

Symbol

To Convert Millimeters (mm) To:

Multiply By:
in inches .03937
µ microns 1000
cm centimeters 0.1
Symbol To Convert Inches (in) To: Multiply By:
mm millimeters 25.4
cm centimeters 2.54
µ microns 25,400
Inch Fractions as Decimal Equivalents and Their Millimeter Conversions
as fraction as its decimal equivalent converted to millimeters
1/64 0.01563 0.39688
1/32 0.03125 0.79375
1/16 0.0625 1.5875
1/8 0.125 3.175
3/16 0.1875 4.7625
1/4 0.250 6.350
5/16 1.3125 7.9375
1/2 0.50 12.7
Length and Distance Online Calculator from Science Lab

Decimal Equivalents of One Inch:

Fraction Decimal Fraction Decimal
1/32 0.13125 5/8 0.625
1/16 0.625 3/4 0.75
19/32 0.59375 7/8 0.875
5/32 0.15625 17/32 0.53125
5/16 0.3125 3/32 0.9375
23/32 0.71875 3/16 0.1875
9/32 0.28125 21/32 0.65625
9/16 0.5625 7/32 0.21875
27/32 0.84375 7/16 0.4375
13/32 0.40625 25/32 0.78125
13/16 0.8125 11/32 0.34375
31/32 0.96875 11/16 0.6875
1/8 0.125 29/32 0.90625
1/4 0.25 15/32 0.46875
3/8 0.375 15/16 0.9375
1/2 0.50    

Converting Various Volumes:
Use this reference when measuring to convert cubic centimeters to other volume units.

Convert From: Convert To: Multiply By:
Cubic Centimeters (cc) US Ounces (oz) 0.033814
Cubic Centimeters (cc) Milliliters (ml) 1.0 (they are equal)
Cubic Centimeters (cc) Cubic Inches (in3) 0.061024
Cubic feet (ft3) Cubic Meters (m3) 0.03
US Ounces (oz) Milliliters 29.57
Cups Liters (L) 0.24
Quarts (qt) Liters (L) 0.96
Volume Online Calculator from Science Lab

Converting Torque:
Use this reference to convert between various torque measurements.

Convert From: Convert To: Multiply By:
Foot-Pounds Inch-Pounds 12.0
Foot-Pounds Kilogram-Meter 0.138255
Foot-Pounds Meter-Newton 1.357
Foot-Pounds Dyne-Centimeters 13,558,179.5
Meter-Newton Foot-Pounds 0.73692
Meter-Newton Kilogram-Meter 0.101883
     
Torque Online Calculator from Science Lab

Converting Power Units:
Use this reference to convert between various power measurements.

Convert From: Convert To: Multiply By:
Watts (joules/sec) Horsepower 0.00134
Milliwatts (mW) Horsepower 0.000001
Watts (joules/ sec) Kilowatts 0.001
Horsepower Watts (joules/sec) 746 
Power Units Online Calculator from Science Lab

Converting Temperature Units:
Use this reference to convert between various power measurements.

Convert From: Convert To: Formula:
Degrees Celsius Degrees Fahrenheit °C = (5/9) * (°F - 32)
Degrees Fahrenheit Degrees Celsius °F = (9/5)*°C + 32
Degrees Celsius Degrees Kelvin °K = °C – 273
Degrees Kelvin Degrees Celsius °K = °C + 273
Temperature Units Online Calculator from Science Lab