📐 Physical Measurement Categories
📏 Length
m, km, ft, in, yd, mi, nmi, au
m, km, ft, in, yd, mi, nmi, au
⬛ Area
m², cm², mm², cmil, in², acre, ha
m², cm², mm², cmil, in², acre, ha
⚡ Current
A, mA, µA, kA, C/s, statA
A, mA, µA, kA, C/s, statA
🌡️ Temperature
Celsius °C, Fahrenheit °F, Kelvin K
Celsius °C, Fahrenheit °F, Kelvin K
🔋 Energy
J, kJ, Wh, kWh, BTU, cal, eV
J, kJ, Wh, kWh, BTU, cal, eV
💡 Power
W, kW, MW, hp, ft·lbf/s
W, kW, MW, hp, ft·lbf/s
⚖️ Mass
kg, g, mg, lb, oz, st, ton
kg, g, mg, lb, oz, st, ton
🧪 Volume
m³, L, mL, gal, fl oz, ft³, bbl
m³, L, mL, gal, fl oz, ft³, bbl
⏱️ Time
s, ms, µs, ns, min, hr, day, yr
s, ms, µs, ns, min, hr, day, yr
🚀 Velocity
m/s, km/h, mph, knot, c
m/s, km/h, mph, knot, c
🧲 Pressure
Pa, kPa, MPa, bar, psi, atm
Pa, kPa, MPa, bar, psi, atm
💾 Data Storage
bit, byte, KB, MB, GB, TB, PB
bit, byte, KB, MB, GB, TB, PB
⬛ Area • mm² ↔ Circular Mils
1 mm² = 1,973.53 cmil| Metric (mm²) | Circular Mils (cmil) | kcmil (MCM) |
|---|---|---|
| 1.0 mm² | 1,973.5 cmil | 1.97 kcmil |
| 16 mm² | 31,576 cmil | 31.58 kcmil |
| 95 mm² | 187,485 cmil | 187.49 kcmil |
| 150 mm² | 296,029 cmil | 296.03 kcmil |
| 185 mm² | 365,103 cmil | 365.10 kcmil |
| 400 mm² | 789,410 cmil | 789.41 kcmil |
Exact conversion factor: 1 circular mil = π/4 × (0.001 in)² = 5.067075 × 10⁻⁴ mm².
📏 Length & Distance Matrix
Base: 1.0 Meter (m)| Millimeters (mm) | 1,000.0 mm |
| Centimeters (cm) | 100.0 cm |
| Feet (ft) | 3.28084 ft |
| Inches (in) | 39.3701 in |
| Yards (yd) | 1.09361 yd |
| Kilometers (km) | 0.00100 km |
⚡ Current, Temp & Energy
Smoke Test ConstantsElectrical Current: 1 A = 1,000 mA = 1.0 C/s = 0.001 kA
Temperature: 0 °C = 32.0 °F = 273.15 K
25 °C (Std Ambient) = 77.0 °F = 298.15 K
Energy: 1 Joule = 1 Watt-second (W·s)
1 kWh = 3,600,000 J = 3.6 MJ = 860.42 kcal