Conversion

Convert decimal stones or mixed stones and pounds into total pounds using the exact conversion of 14 pounds per stone.

Convert stones to ounces, including decimal stones or stones plus extra pounds and ounces. Shows pounds and decimal-stone checks.

Convert a distance from yards to kilometers using the exact conversion factor. Choose how many decimal places to show.

Convert yards to millimeters using the exact 914.4 mm per yard factor. Add optional feet and choose display rounding.

Convert kWh to therms or therms to kWh, plus BTU, megajoules, same-energy bill costs, and break-even prices.

Convert therms to kWh or kWh to therms, with optional efficiency, COP, and price checks for heating comparisons.

Convert watts, kW, mechanical hp, electrical hp, and metric PS, with an optional efficiency adjustment for motor estimates.

Convert mechanical, electric, metric, or boiler horsepower to watts and kilowatts with the matching conversion factor.

Convert cubic yards to gallons or gallons to cubic yards with US liquid, US dry, or Imperial gallon choices and the factor used.

Convert US liquid gallons to cubic yards or cubic yards to gallons, with cubic feet and the exact factor used.