Conversion table

Metric / AWG Cross Reference Chart

Cross-reference table for converting American Wire Gauge (AWG), Circular Mils (MCM), and Metric cross-section areas (mm²).

Conductor Size Conversion Table
AWG / MCM Size Metric Cross-Section Circular Mils Diameter (Inches) Diameter (mm)
AWG 30 0.05 mm² 100.5 Mils 0.0100" 0.254 mm
AWG 28 0.08 mm² 159.8 Mils 0.0126" 0.320 mm
AWG 26 0.14 mm² 254.1 Mils 0.0159" 0.404 mm
AWG 24 0.20 mm² 404.0 Mils 0.0201" 0.511 mm
AWG 22 0.34 mm² 642.4 Mils 0.0253" 0.644 mm
AWG 20 0.50 mm² 1,022 Mils 0.0320" 0.812 mm
AWG 18 0.75 mm² 1,624 Mils 0.0403" 1.024 mm
AWG 16 1.50 mm² 2,583 Mils 0.0508" 1.291 mm
AWG 14 2.50 mm² 4,107 Mils 0.0641" 1.628 mm
AWG 12 4.00 mm² 6,530 Mils 0.0808" 2.053 mm
AWG 10 6.00 mm² 10,380 Mils 0.1019" 2.588 mm
AWG 8 10.00 mm² 16,510 Mils 0.1285" 3.264 mm
AWG 6 16.00 mm² 26,240 Mils 0.1620" 4.115 mm
AWG 4 25.00 mm² 41,740 Mils 0.2043" 5.189 mm
AWG 2 35.00 mm² 66,360 Mils 0.2576" 6.544 mm
AWG 1 50.00 mm² 83,690 Mils 0.2893" 7.348 mm
AWG 1/0 50.00 mm² 105,600 Mils 0.3249" 8.251 mm
AWG 2/0 70.00 mm² 133,100 Mils 0.3648" 9.266 mm
AWG 3/0 95.00 mm² 167,800 Mils 0.4096" 10.400 mm
AWG 4/0 120.00 mm² 211,600 Mils 0.4600" 11.684 mm
250 MCM 120.00 mm² 250,000 Mils 0.5000" 12.700 mm
300 MCM 150.00 mm² 300,000 Mils 0.5477" 13.912 mm
350 MCM 185.00 mm² 350,000 Mils 0.5916" 15.027 mm
400 MCM 185.00 mm² 400,000 Mils 0.6325" 16.064 mm
500 MCM 240.00 mm² 500,000 Mils 0.7071" 17.960 mm
600 MCM 300.00 mm² 600,000 Mils 0.7746" 19.675 mm
750 MCM 400.00 mm² 750,000 Mils 0.8660" 21.996 mm
1000 MCM 500.00 mm² 1,000,000 Mils 1.0000" 25.400 mm

Length Conversions

Formulas and values for converting between metric units (millimeters, centimeters, meters, kilometers) and standard imperial units (inches, feet, yards, miles).

Metric System Length Units
From Multiplier To
1 Centimeter (cm) = 10 Millimeters (mm)
1 Meter (m) = 100 Centimeters (cm)
1 Kilometer (km) = 1000 Meters (m)
Standard / Imperial Length Units
From Multiplier To
1 Foot (ft) = 12 Inches (in)
1 Yard (yd) = 3 Feet (ft)
1 Yard (yd) = 36 Inches (in)
1 Mile (mi) = 1760 Yards (yd)
Metric to Standard Length Conversions
From (Metric) Multiplier To (Standard)
1 Millimeter (mm) ≈ 0.03937 Inches (in)
1 Centimeter (cm) ≈ 0.39370 Inches (in)
1 Meter (m) ≈ 39.37008 Inches (in)
1 Meter (m) ≈ 3.28084 Feet (ft)
1 Meter (m) ≈ 1.09361 Yards (yd)
1 Kilometer (km) ≈ 1093.6133 Yards (yd)
1 Kilometer (km) ≈ 0.62137 Miles (mi)
Standard to Metric Length Conversions
From (Standard) Multiplier To (Metric)
1 Inch (in) = 2.5400 Centimeters (cm)
1 Foot (ft) = 30.4800 Centimeters (cm)
1 Yard (yd) = 91.4400 Centimeters (cm)
1 Yard (yd) = 0.9144 Meters (m)
1 Mile (mi) = 1609.344 Meters (m)
1 Mile (mi) = 1.609344 Kilometers (km)

Area Conversions

Units and conversion multipliers for cross-sectional surfaces and geographic areas (square millimeters, square centimeters, square meters, square feet, acres, square miles).

Metric System Area Units
From Multiplier To
1 Sq Centimeter (cm²) = 100 Sq Millimeters (mm²)
1 Sq Meter (m²) = 10,000 Sq Centimeters (cm²)
1 Hectare (ha) = 10,000 Sq Meters (m²)
1 Sq Kilometer (km²) = 100 Hectares (ha)
1 Sq Kilometer (km²) = 1,000,000 Sq Meters (m²)
Standard / Imperial Area Units
From Multiplier To
1 Sq Foot (ft²) = 144 Sq Inches (in²)
1 Sq Yard (yd²) = 9 Sq Feet (ft²)
1 Acre = 4,840 Sq Yards (yd²)
1 Acre = 43,560 Sq Feet (ft²)
1 Sq Mile (mi²) = 640 Acres
Metric to Standard Area Conversions
From (Metric) Multiplier To (Standard)
1 Sq Centimeter (cm²) ≈ 0.15500 Sq Inches (in²)
1 Sq Meter (m²) ≈ 10.76391 Sq Feet (ft²)
1 Sq Meter (m²) ≈ 1.19599 Sq Yards (yd²)
1 Hectare (ha) ≈ 2.47105 Acres
1 Sq Kilometer (km²) ≈ 0.386102 Sq Miles (mi²)
Standard to Metric Area Conversions
From (Standard) Multiplier To (Metric)
1 Sq Inch (in²) = 6.4516 Sq Centimeters (cm²)
1 Sq Foot (ft²) = 929.0304 Sq Centimeters (cm²)
1 Sq Foot (ft²) ≈ 0.09290 Sq Meters (m²)
1 Sq Yard (yd²) ≈ 0.83613 Sq Meters (m²)
1 Acre ≈ 0.40469 Hectares (ha)
1 Sq Mile (mi²) ≈ 258.99881 Hectares (ha)
1 Sq Mile (mi²) ≈ 2.589988 Sq Kilometers (km²)

Volume & Cubic Conversions

Conversions for three-dimensional physical volumes (cubic centimeters, cubic meters, cubic inches, cubic feet, cubic yards).

Metric System Cubic Units
From Multiplier To
1 Cubic Centimeter (cm³) = 1,000 Cubic Millimeters (mm³)
1 Cubic Meter (m³) = 1,000,000 Cubic Centimeters (cm³)
Standard / Imperial Cubic Units
From Multiplier To
1 Cubic Foot (ft³) = 1,728 Cubic Inches (in³)
1 Cubic Yard (yd³) = 46,656 Cubic Inches (in³)
1 Cubic Yard (yd³) = 27 Cubic Feet (ft³)
Metric to Standard Volume Conversions
From (Metric) Multiplier To (Standard)
1 Cubic Centimeter (cm³) ≈ 0.06102 Cubic Inches (in³)
1 Cubic Meter (m³) ≈ 35.31467 Cubic Feet (ft³)
1 Cubic Meter (m³) ≈ 1.30795 Cubic Yards (yd³)
Standard to Metric Volume Conversions
From (Standard) Multiplier To (Metric)
1 Cubic Inch (in³) ≈ 16.38706 Cubic Centimeters (cm³)
1 Cubic Foot (ft³) ≈ 0.02832 Cubic Meters (m³)
1 Cubic Yard (yd³) ≈ 0.76455 Cubic Meters (m³)

Weight & Mass Conversions

Reference tables for mass calculations (milligrams, grams, kilograms, tonnes, ounces, pounds, hundredweights, short tons).

Metric System Mass Units
From Multiplier To
1 Gram (g) = 1,000 Milligrams (mg)
1 Kilogram (kg) = 1,000 Grams (g)
1 Tonne (t) = 1,000 Kilograms (kg)
Standard / US Mass Units
From Multiplier To
1 Ounce (oz) = 16 Drams (dr)
1 Pound (lb) = 16 Ounces (oz)
1 Hundredweight (cwt) = 100 Pounds (lbs)
1 Short Ton (ton) = 20 Hundredweight (cwt)
1 Short Ton (ton) = 2,000 Pounds (lbs)
Metric to Standard Mass Conversions
From (Metric) Multiplier To (Standard)
1 Gram (g) ≈ 0.035274 Ounces (oz)
1 Kilogram (kg) ≈ 2.20462 Pounds (lbs)
1 Kilogram (kg) ≈ 35.27396 Ounces (oz)
1 Tonne (t) ≈ 1.10231 Short Tons (ton)
Standard to Metric Mass Conversions
From (Standard) Multiplier To (Metric)
1 Ounce (oz) ≈ 28.34952 Grams (g)
1 Pound (lb) ≈ 453.59237 Grams (g)
1 Pound (lb) ≈ 0.45359 Kilograms (kg)
1 Hundredweight (cwt) ≈ 50.80230 Kilograms (kg)
1 Short Ton (ton) ≈ 0.90718 Tonnes (t)

Liquid Volume Conversions (US)

Unit relationships and conversion tables for liquid capacities (milliliters, centiliters, liters, teaspoons, tablespoons, fluid ounces, gills, cups, pints, quarts, gallons).

Metric Liquid Units
From Multiplier To
1 Centiliter (cl) = 10 Milliliters (ml)
1 Liter (L) = 1,000 Milliliters (ml)
Standard / US Liquid Capacity
From Multiplier To
1 Tablespoon (Tbsp) = 3 Teaspoons (tsp)
1 Fluid Ounce (fl oz) = 2 Tablespoons (Tbsp)
1 Fluid Ounce (fl oz) = 8 Drams (dr)
1 Gill (gi) = 4 Fluid Ounces (fl oz)
1 Cup = 8 Fluid Ounces (fl oz)
1 Pint (pt) = 2 Cups
1 Pint (pt) = 16 Fluid Ounces (fl oz)
1 Quart (qt) = 2 Pints (pt)
1 Gallon (gal) = 4 Quarts (qt)
1 Gallon (gal) = 128 Fluid Ounces (fl oz)
Metric to Standard Liquid Conversions
From (Metric) Multiplier To (Standard)
1 Milliliter (ml) ≈ 0.033814 Fluid Ounces (fl oz)
1 Liter (L) ≈ 33.814022 Fluid Ounces (fl oz)
1 Liter (L) ≈ 2.113376 Pints (pt)
Standard to Metric Liquid Conversions
From (Standard) Multiplier To (Metric)
1 Fluid Ounce (fl oz) ≈ 29.57353 Milliliters (ml)
1 Pint (pt) ≈ 473.17648 Milliliters (ml)
1 Pint (pt) ≈ 0.47318 Liters (L)
1 Gallon (gal) ≈ 3.78540 Liters (L)

Technical Conversion Formulas

Reference equations for physical quantities, heat thermodynamics, and electrical cabling parameters.

Temperature Equations
Convert ambient heat metrics between Celsius (°C) and Fahrenheit (°F) scales:
°F = (°C × 1.8) + 32
°C = (°F - 32) ÷ 1.8
Circular Mil Conductor Area
A Circular Mil represents the area of a circle with a diameter of 1 mil (0.001 inch):
Area (Circular Mils) = (Diameter in Inches × 1000)²
Convert circular mils to equivalent metric cross-sectional square millimeters ($mm^2$):
mm² = Circular Mils × 0.0005067
Electrical Cable Resistance Scales
Convert resistance parameters between Metric and Standard length units:
Ohms/1000 Feet = (Ohms/Kilometer) × 0.3048
Ohms/Kilometer = (Ohms/1000 Feet) × 3.2808
Primary Length Multipliers
Primary dimensional ratios used by wire manufacturers to calculate physical dimensions:
Millimeters = Inches × 25.40
Meters = Feet × 0.3048