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Unit converter
Calculators
Energy and fuel
Construction
Fractions
Equations
Area and perimeter
Volume and surface
Trigonometry
Powers and roots
Logarithms
Calculus
BMI calculator
Percentages
Rule of three
Average
Quantities
Time
Length
Weight
Density
Torque
Volume
Area
Work (energy)
Flow rate
Speed
Force
Pressure
Power
Temperature
Data size
Data rate
Conversion tables
Conversion tables
Cooking conversions
Imperial units
Old Czech units
Density (liters to kg)
kW to hp and Nm
kJ to kcal and kWh
Pressure: bar, psi, kPa
Speed: km/h, m/s
Flow: l/min, m³/h
Slope: % and degrees
Oven temperature
SI prefixes
Roman numerals
Data units (MB, GiB)
Mbps to MB/s
Fuel: l/100 km and MPG
Temperature conversions
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1 btu to kilowatt hours – conversion
1 btu to kilowatt hours – conversion
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