Thor's Hammer Mjölnir – From Axe to Hammer

A handle that turned out too short, a fly at the bellows and over a thousand silver amulets in the earth: Thor's hammer is the best-known symbol of the Viking Age – and its true story is even better than the myth. We separate cleanly what is proven, what remains legend, and what was invented only later.

How Mjölnir Was Forged

The fullest account comes from the Icelandic scholar Snorri Sturluson, around 1220, in the Prose Edda (Skáldskaparmál). It begins with a prank by Loki: he has secretly cut off the goddess Sif's golden hair. To save his own head, he pits two dwarven smithies against each other. The brothers Brokkr and Eitri (in later versions the smith is called Sindri) are to make three treasures that outshine everything before.

While Eitri works the iron, Brokkr keeps the bellows going. Loki turns into a fly and stings the dwarf – twice Brokkr holds firm; on the third piece the fly stings his eyelid, blood clouds his sight, and Brokkr lets the bellows falter for a heartbeat. That is why the hammer's handle came out too short. From the forge came the boar Gullinbursti, the ring Draupnir and the hammer Mjölnir.

From Axe to Hammer – What Is Certain and What Is Not

The hammer is both tool and weapon – and that is exactly the source of its symbolic power. A god who wields the lightning with a striking weapon is an ancient Indo-European motif; linguistically Mjölnir is linked, among other ideas, to the Slavic word for “lightning” (molnija), which would give “lightning-maker”. That etymology, however, is explicitly disputed.

Over 1,000 Amulets – What the Archaeology Shows

Roughly a thousand Thor's-hammer pendants have been found so far, scattered across Scandinavia, England, northern Germany, the Baltic and the Rus lands as far as Iceland. The peak lies in the late Viking Age, above all the 10th century. Most pieces are plain silver or iron, more rarely amber – lavish examples with filigree and granulation are the exception.

“This Is a Hammer” – the Runic Hammer of Købelev

For a long time scholars wondered whether the little pendants depicted Thor's hammer at all. In 2014 a find on Lolland (Denmark) settled it: a silver pendant of the 10th century carries interlace on one side and a runic inscription on the other – “hmar × is”, read as “this is a hammer”. It is the only Thor's hammer known with a runic inscription and confirms what the amulets are.

Did Only Women Wear Thor's Hammer?

You often hear and read it: that Thor's hammer was a “women's symbol”. The claim is too sharp – but it has a true core.

“Thor, Hallow!” – the Hammer as Blessing, Not Only Weapon

Mjölnir smashes giants' skulls – but in the sources it hallows and blesses just as often. In the eddic poem Þrymskviða a giant steals the hammer; Thor has to attend the wedding disguised as a bride. When the hammer is carried in “to hallow the bride”, Thor seizes it. The hammer is laid in the bride's lap – a gesture of blessing at a marriage.

“Bring in the hammer to hallow the bride; on the maiden's knees let Mjöllnir lie.”Þrymskviða, st. 30, after the translation by Henry Adams Bellows (public domain)

This fits the scene in the Gylfaginning where Thor slaughters his two goats, eats them, and in the morning brings them back to life with the raised hammer. And on several runestones Thor is invoked to “hallow” the monument – for instance on Glavendrup, Sønder Kirkeby, Virring and the Swedish Velanda; the stone at Læborg even carries a carved image of a hammer.

Why Thursday Is Thor's Day

When the Germanic peoples adopted the Roman order of weekdays, they put their own gods in place of the Roman ones: the dies Iovis, the day of thundering Jupiter, became the day of the Germanic thunder god Donar/Þunraz – giving English Thursday and German Donnerstag. So Thor still carries a weekday to this day.

Honest separation matters to us: when we engrave a sign, we're happy to tell you what is proven and what remains legend. More of that in our post on real and invented Viking symbols or in the Rune Lexicon.

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