📐 Joist Span Calculator
Joist and span
Joist size
2 × 6
2 × 8
2 × 10
2 × 12
Species & grade
Douglas fir-larch #2
Southern pine #2
Spruce-pine-fir #2
Hem-fir #2
Joist spacing
12 in on center
16 in on center
24 in on center
Your span (support to support)
Check the span
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