Free Printable Drill Bit Size Charts (PDF)
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by josianesantos
A drill bit size chart saves you from guessing which bit matches a screw, tap, or anchor when you're mid-project. This set of 33 printable charts lays out fractional, metric, number, and letter sizes with their decimal equivalents. Woodworkers, machinists, and weekend DIYers can keep an accurate reference right at the workbench.
Each chart comes as a print-ready PDF, so there's nothing to install. Just download and print one to tape inside a toolbox or above the drill press. Laminate a copy and it'll survive the shop. Grab the chart that covers the sizes you use and keep it handy for the next job.
When to use this Drill Bit Size Charts template
- A woodworker measuring pilot holes for custom cabinetry needs a quick reference to match imperial and metric drill bits without switching between tools mid-project.
- A machinist assembling precision parts requires a durable, pocket-sized chart to cross-check fractional and decimal equivalents when working with tight tolerances in a shop setting.
- A weekend DIYer replacing deck hardware struggles to remember which letter-sized bit fits a lag bolt and uses a printed chart to avoid stripping threads or damaging materials.
- A teacher in a vocational woodworking class keeps a laminated chart at each workstation so students can verify measurements before drilling, reducing material waste in group projects.
Which format should I download?
All 33 drill bit size charts in this collection are available exclusively in PDF format. Stick with PDF if you need a universally compatible, print-ready file that preserves clarity and crisp lines when printed on letter or A4 paper. This format also works seamlessly with most tablets for on-site reference, whether you're marking measurements in a workshop or on a job site. PDFs are ideal here because they ensure accuracy—no distortion from scaling or formatting shifts—and they’re easy to share or email to team members or suppliers.
Choose from 33 Drill Bit Size Charts Templates
How to use this Drill Bit Size Charts template
Can I print these charts to a size smaller than letter/A4 without losing readability?
Most charts are designed to print clearly at letter/A4 sizes. If you need a compact version, consider scaling down to 80% in your printer settings. However, very small prints (e.g., pocket-sized) may make fractional/metric conversions harder to read quickly. Test print one first to check legibility for your needs.
Do these charts include conversion tables for taps, reamers, or countersinks alongside drill bits?
This collection focuses specifically on drill bit sizes—fractional, metric, number, and letter—with their decimal equivalents. For taps, reamers, or countersinks, you’ll need a separate specialized chart. Some templates combine multiple tools, but those aren’t part of this set.
Are the PDFs optimized for mobile devices, or should I print them for best use?
While the PDFs display on mobile devices, they’re not optimized for small screens. For on-the-go use, print a durable version or save it to a tablet with a protective case. On-site readability suffers on phone screens, so printing remains the most practical option for workshops or job sites.
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