Anvil Weight Calculator converts traditional anvil stamp markings into actual weight instantly. English anvils use the hundredweight system with three numbers: hundreds - quarters - pounds Enter those markings and immediately see total weight in pounds or kilograms. Features: • Fast weight calculation from stamped markings • One-tap toggle between lbs and kg • Simple interface for quick use in the shop • Remembers your last values and unit preference • Light or Dark mode selectable from the menu Whether you are buying, restoring, or cataloging anvils, this tool helps you decode stamped marks accurately and quickly. Note: This app is not for American anvils (typically stamped directly in pounds). It is intended for anvils marked using the hundredweight system.