If you have kids, pets, or a busy household, hardness matters. The Janka hardness test is the industry standard for comparing how well different wood species resist denting and wear. Understanding it helps you balance durability against the look and budget you want.
What is the Janka scale?
The Janka test measures the force required to embed a small steel ball halfway into a piece of wood. The result — usually expressed in pounds-force (lbf) — tells you how resistant that species is to denting and surface wear. Higher numbers mean a harder, more dent-resistant wood. Red Oak, at about 1,290, is the industry's reference point: many people describe other species as harder or softer 'than oak.'
Janka hardness of common flooring species
Approximate Janka ratings for species we work with (values vary slightly by source and individual board):
| Species | Janka (lbf) | Relative to Red Oak |
|---|---|---|
| Brazilian Walnut (Ipe) | 3680 | Much harder |
| Cumaru | 3540 | Much harder |
| Brazilian Cherry (Jatoba) | 2350 | Much harder |
| Santos Mahogany | 2200 | Much harder |
| Hickory / Pecan | 1820 | Harder |
| Hard Maple | 1450 | Harder |
| White Oak | 1360 | Slightly harder |
| Ash | 1320 | Similar |
| Red Oak | 1290 | Reference |
| Black Walnut | 1010 | Softer |
| American Cherry | 950 | Softer |
| Heart Pine (antique) | 1225 | Similar (varies) |
| Douglas Fir | 660 | Much softer |
| Eastern White Pine | 380 | Much softer |
How hard does your floor actually need to be?
Harder isn't automatically 'better.' Plenty of beautiful, historic floors are made from softer species like pine and walnut — they simply develop character over time. What matters is matching hardness to your lifestyle:
- Large dogs, kids, high traffic, or a desire for minimal dents → choose Hickory, Hard Maple, White Oak, or a dense exotic.
- Formal or low-traffic rooms where look leads → softer species like Walnut or Cherry are perfectly appropriate.
- Historic or rustic aesthetic → Heart Pine and other softer woods earn their patina gracefully.
Hardness isn't the whole story
Finish quality, board grade, sheen (matte hides scratches better than high gloss), and felt pads under furniture often affect day-to-day durability as much as raw Janka numbers.
Key Takeaways
- Janka measures dent and wear resistance; Red Oak (~1,290) is the benchmark.
- Hickory, Maple, and White Oak are excellent hard, durable choices for busy homes.
- Softer species like Walnut, Cherry, and Heart Pine are beautiful for the right rooms.
- Finish, sheen, and maintenance affect real-world durability as much as hardness.
Frequently Asked Questions
Among common flooring options, Brazilian Walnut (Ipe) is one of the hardest at roughly 3,680 on the Janka scale, followed by other dense exotics like Cumaru and Brazilian Cherry. They are extremely dent-resistant but also harder to work and refinish.
