Online Metric Conversion Calculations using only your web browser without any additional software. Works in any web browser like Internet Explorer, Mozilla Firefox etc. Put the value you wish to convert, press the button with convertion direction and get converted value. You may convert from ... to and back: inches to milimeters, yards t ometers, miles to kilometers, acres to hectares, ozes to gramms, pounds to kilogrammes, stones to kilogrammes, gallons to litres, grads fahrenhet to grads Celsius, cals to joules.