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Printable reference chart

Rafter Span Chart

The Rafter Span Chart provides a complete, printable HTML lookup table with the values shown below. Every row is present in the served page source, so the numbers remain readable without JavaScript. Use direct conversion rows as written; for structural rows, confirm the cited source, material species, grade, loads, spacing, and local requirements.

Download PDF (Letter) Download PDF (A4) Open calculator
Rafter Span Chart: complete printable lookup table
Nominal size12 in o.c.16 in o.c.24 in o.c.
2×612 ft 6 in11 ft 4 in9 ft 3 in
2×816 ft 5 in14 ft 9 in12 ft 1 in
2×1020 ft 8 in18 ft 6 in15 ft 2 in
2×1224 ft 6 in21 ft 10 in17 ft 10 in

Source and verification: American Wood Council span resources

Frequently asked questions

Can I print the rafter span?

Yes. Use the Letter or A4 PDF links, or print the HTML table directly. The printable view removes navigation and keeps the title, table, source note, and brand.

Is the table available without JavaScript?

Yes. Every row is rendered as ordinary HTML with a caption and scoped headers. JavaScript is not required to read or quote the values.

Can I use the values as a final structural design?

No. Conversion charts are direct references, but span and member-size charts are planning examples. Current code tables, species, grade, loads, connections, and professional review govern structural work.

How often is the chart reviewed?

The review date is shown on the page and in the Dataset schema. Source-linked code tables are checked when their governing publication changes.

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iPhone companion

Keep jobsite math available offline

The website calculators and charts stay free. The BuildMath iPhone app keeps its supported construction calculations available when the jobsite has no connection.

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Last reviewed .

BuildMath · carpentercalc.com · /charts/rafter-span