Contact JankaHardnessScale.com
Found a value that looks off? Have a question about the data, or want to add the widget to your site? Use the form below.
Send a Message
There's no phone number or mailing address for the site, so the form is the way in. It works for data corrections, general questions about the Janka hardness tool, widget embed requests, partnerships, or anything else that comes up.
If you're flagging a value that looks wrong, include the species name, the number you're questioning, and where you're seeing a different figure. The Wood Database and the USDA Forest Products Laboratory Wood Handbook are what get checked first when something's in dispute.
Fields marked are required.
What to expect: Messages get read when there's time. Data corrections are the most valuable thing to send, since the whole point of this site is getting the numbers right. Any flagged value gets checked against The Wood Database and the ASTM D143 standard before anything changes.
Explore the Site
Looking for the tool or want more context about the project? Start here.