Metric Conversions
Metric Conversions is a comprehensive unit-conversion site covering length, weight, volume, area, temperature, speed, time, angle, pressure, and energy with formulas and conversion tables.
Energy Conversion(4)
BTU to Joules conversion
This tool is a dedicated Btu (I.T.) to Joules calculator with configurable accuracy and a clear conversion formula. I...
BTU to Therms Energy Converter
This page offers a free BTU to Therms (US) converter interface and provides access to the reverse Therms to BTU conve...
BTU to kJ conversion
This page converts Btu (I.T.) to kilojoules with an interactive calculator and extensive tabular values. It is design...
Energy and Power Conversion
Converts energy and power units — joules, calories, kilowatt-hours, BTU, and horsepower.
General Conversion(3)
Barometric Pressure Conversion
The free pressure converter supports atmospheric pressure-related units such as atmospheres, pascals, bar, torr, and ...
Conversion Table Reference
Master reference table of metric conversions and equivalences across major unit categories.
Universal Unit Converter
All-in-one unit conversion tool covering every supported category in a single interface.
Volume Conversion(3)
Barrel Oil to Gallons Converter
This converter focuses on US oil barrels to US liquid gallons and provides both instant calculation and tabular value...
Barrel Wine to Liters Converter
This free tool converts barrels to liters and explains different barrel types on the same page. It includes a calcula...
Barrels to Liters Volume Converter
This dedicated barrels-to-liters tool provides direct conversion with selectable barrel types (including US dry/liqui...