idea 29 · build only
Unit converter
Centimetres and inches converted where the dimensions are.
The Metropolitan Museum of Art, Open Access
Dimensions ship in the open data in both systems, because half the people reading them think in inches and half in centimetres.
https://github.com/metmuseum/openaccessDimensions
How big is it really
Prefilled with a real dimension: Madame X (Virginie Amélie Avegno Gautreau), John Singer Sargent, 82 1/8 × 43 1/4 in. (208.6 × 109.9 cm) Framed: 95 3/4 × 56 5/8 × 5 in. (243.2 × 143.8 × 12.7 cm). The Metropolitan Museum of Art, CC0.
Four conversions, no library, and the field is prefilled with a real canvas size rather than a round number. The reason this belongs in a museum app rather than a search engine: the visitor asking is standing in front of the object, and going to a search engine means leaving.