KNIGHTSTREASURE
Treasures of the past — medieval history and knights, castles and archaeology, hoards and antiquities, and the relics that outlast empires.
From knights and castles to buried coin hoards, unearthed artifacts, heraldry, and the relics of long-lost kingdoms, KnightsTreasure pairs free hands-on history calculators with well-researched guides and a richly illustrated museum. Dig deeper, learn more.
History Tools & Calculators
Free tools for the curious — date and timeline calculators, coin and metal estimators, and quick references to help you explore the medieval world and the treasures it left behind.
Precious Metal Melt Value Calculator
Estimate the intrinsic melt value of a gold, silver, or other precious-metal item from its weight, purity, and the spot price per gram — the raw metal worth behind coins, jewellery, and artifacts
Gold Karat Converter
Convert a gold karat rating into its purity percentage and fineness (parts per thousand) — read a 24k, 22k, 18k, or 14k mark, or a 999/916/750/585 hallmark, at a glance
Roman Numeral Converter
Turn any number from 1 to 3999 into standard subtractive Roman numerals — the notation carved on monuments, minted on coins, and inked in medieval manuscripts
Gemstone Carat Weight Calculator
Estimate the carat weight of a cut gemstone from its length, width, and depth in millimetres and a shape/density factor — a quick reckoning for a mounted stone you cannot weigh
Treasure Hoard Value Calculator
Total the value of a mixed coin hoard from the count of gold and silver coins and a value for each — a back-of-envelope reckoning for a find of medieval or ancient coinage
Medieval Land Converter
Convert acres into medieval English land units — hides (120 acres), virgates (30 acres), and roods (quarter-acres) — the assessment measures of the Domesday world
The Treasure Museum
Wander an immersive museum of the medieval world and the treasures it left behind — knights and castles alongside archaeological finds and buried artifacts, coin hoards and antique jewelry, relics and antiquities, and the heraldry of vanished houses, each in its own gallery, so you can get to know the stories behind every object: how it was made, why it mattered, and what it tells us about the age that created it.
Tour the museum →From the Journal
Fresh features on medieval history, knights and castles, archaeology and artifacts, treasure hoards and ancient coins, antiquities and relics, plus practical explainers for anyone curious about the past.
The Evolution and Ingenious Design of Medieval Castle Fortifications
The Evolution and Ingenious Design of Medieval Castle Fortifications In the heart of medieval Europe, castles stood as both symbols of power and bastions against invasion. Their construction was not…
The Enigmatic Treasures of Medieval Relics: Unearthing History’s Hidden Legacy
The Enigmatic Treasures of Medieval Relics: Unearthing History’s Hidden Legacy In the shadowed corridors of time, where history whispers through crumbling stone and rusting iron, lie treasures that have captivated…
The Unearthing of Time: A Knight’s Journey Through Archaeological Digs
The Unearthing of Time: A Knight’s Journey Through Archaeological Digs In the shadow of ancient ruins and beneath layers of earth untouched by modern hands, the world of archaeological digs…
Archaeological Discoveries Strategies and Implementation
The Hidden Treasures Beneath Our Feet: Unearthing Ancient Mysteries Through Archaeology In every corner of our planet, beneath layers of soil and time, lie secrets waiting to be discovered. From…
The Living Tapestry: Immersive Historical Reenactments as Time Travel Through Costume and Combat
The Living Tapestry: Immersive Historical Reenactments as Time Travel Through Costume and Combat In an era where digital screens dominate our daily lives, historical reenactment offers a rare form of…
The Evolution of Castle Architecture: From Fortified Keeps to Gothic Masterpieces
The Evolution of Castle Architecture: From Fortified Keeps to Gothic Masterpieces In the annals of human history, few structures have captured the imagination as profoundly as castles. These towering edifices…
Keep Learning
Plain-language explainers on medieval life, castles and armor, archaeology and artifacts, coin hoards and heraldry, and clear guides to how historians and treasure hunters make sense of the past — everything you need to dig deeper and learn more.
Visit the Learn hub →