microclaw Unit Converter
Compute conversions, don't approximate from memory. Use Python so the factor is exact.
Common conversions
python3 -c "print(5*2.54, 'cm')" # inches -> cm
python3 -c "print(70*9/5+32, 'F')" # 70C -> F (use (F-32)*5/9 for F->C)
python3 -c "print(round(100/1.609344,3), 'mi')" # km -> miles
python3 -c "print(180/2.2046226218, 'kg')" # lb -> kg
Data sizes (binary vs decimal)
python3 -c "print(5*1024, 'MiB =', 5, 'GiB (binary)')"
python3 -c "print(5*1000, 'MB =', 5, 'GB (decimal)')"
State which convention you used — GiB (1024) vs GB (1000) — they differ ~7%.
Reference factors
- Length: 1 in = 2.54 cm; 1 ft = 0.3048 m; 1 mi = 1.609344 km; 1 nmi = 1.852 km.
- Mass: 1 lb = 0.45359237 kg; 1 oz = 28.349523125 g; 1 stone = 6.35029 kg.
- Temp: C = (F−32)·5/9; F = C·9/5+32; K = C+273.15.
- Volume: 1 US gal = 3.785411784 L; 1 imp gal = 4.54609 L; 1 cup(US) = 236.588 mL.
- Speed: 1 mph = 1.609344 km/h; 1 knot = 1.852 km/h; 1 m/s = 3.6 km/h.
Guidance
- Always show the resulting number AND the unit; round sensibly (don't report 11 decimals).
- For US vs Imperial gallons/pints, ask or assume US and say so.
- For currency, this is not the right skill — exchange rates change; use a live source.