Contact Rafter Calculator Pro
Questions about rafter lengths, birdsmouth cuts, or roof pitch? Found a formula that doesn’t add up? We help carpenters, contractors, and DIY builders get the numbers right before the first cut.
How can we help?
Pick the channel that fits — it routes your message to the right person.
Calculation & Technical Support
Rafter length look off? Birdsmouth or plumb-cut angle confusing? Send the pitch, span, and overhang you entered and the result you expected versus what you got.
support@rafter-calculator.comFeature Suggestions
Ideas for new rafter types (hip, valley, jack), preset lumber sizes, PDF layout tweaks, or better metric support? We build around what carpenters actually use on the job.
feedback@rafter-calculator.comReport a Formula or Content Error
Carpentry is precise. If a formula, diagram, or guide looks wrong, send the page URL and the exact numbers so we can verify it against standard span tables and correct it.
corrections@rafter-calculator.comPartnerships & Trade Education
Trade schools, lumberyards, tool brands, and carpentry educators — we're open to collaborations, classroom licensing, and tool integrations.
partners@rafter-calculator.comFind Answers Faster
Most rafter questions are already covered in our guides and FAQ.
Still need help?
Send us the numbers and we’ll help you work through the rafter math.
support@rafter-calculator.com