Free tool
Mjolnir Prop Scaling Calculator
Scale Thor's Mjolnir from Marvel to your exact height. Canonical overall height is 58 cm (22.8 in). Enter your height below to get every dimension proportionally adjusted for your build.
Build it right from the start
This calculator gives you the dimensions. Costumary tracks your full build: references, materials, budget, timeline, and progress, all in one workspace.
Start organizing your buildsMore free tools for makers
Frequently asked questions
How big should a Mjolnir cosplay prop be?
The canonical Mjolnir overall height is 58 cm (22.8 in), based on Thor at 190 cm (6'3"). For a cosplayer who is 165 cm, proportional scaling brings the overall height to about 50 cm. Use the calculator above to get exact dimensions for your height.
What material should I use for a Mjolnir cosplay?
The Mjolnir is a mid-size prop at 58 cm canonical length. EVA foam, Worbla, or 3D-printed segments all work well at this scale. For a lightweight build, go with EVA foam over a dowel core. For surface detail, Worbla or resin-coated foam board gives a harder finish that takes paint cleanly.
Is the Mjolnir from Marvel allowed at conventions?
Yes, as long as it meets your convention's prop policy. Most cons allow props up to 183 cm (6 feet) and require peace-bonding. The Mjolnir at canonical size is 58 cm, well within limits for most cosplayers. Build it from foam or similar lightweight material (no metal or sharp edges), and check your specific convention's rules before attending.