For conversions from inches to millimeters: multiply the number by 25.4. For conversions from millimeters to inches: multiply the number by.If you’re interested in doing bit conversions yourself, all you’ll need is a calculator and these formulas: Or, if you prefer to avoid doing math altogether, a pocket bit gauge is worth its weight in gold. If you’re a regular Einstein, you can do the math yourself. So, what do you do when you need to make conversions from standard to metric? There are two different ways to tackle this issue. You’re regularly going to encounter fasteners or hole sizes that are sized metrically, usually in millimeters. Just because your drill bits are sized in fractions doesn’t mean the rest of the world is. So far, everything has been relatively straightforward and easy to understand. Most standard screws are sized by number, from 1-12, and each of those numbers corresponds to a different drill bit size. Matching Bits to Screwsįor new construction, it’s essential to know which drill bit corresponds to which screw size. However, if you have bits in these sizes, you’re well on your way to having every drill bit you’ll ever need. Keep in mind that there are hundreds of more bits beyond the ones that we’ve covered here. Here are the most common sizes for a standard (fractional) bit set: 1/16 As a rule of thumb, any set that contains 20 or more bits should be more than enough for most craftsmen. Of course, some bits have specialized applications and aren’t relevant for most basic work around the house.Ī typical set of drill bits includes somewhere between 12 and 30 bits. Maybe a better question would be how much time you have!Īll kidding aside, when it comes to drill bits, there’s a seemingly endless array of different sizes. Today, we’ll cover a drill bit size chart, so you can ensure you always have the right tool for the job. Considering the sheer volume of different bits on the market, this is easier said than done, and it gets even more complicated once you realize that not all measurements correspond to standard bit sizes. Having the right drill bits on hand is critical, whether you’re a weekend warrior, or a professional carpenter or contractor. Share on X (Twitter) Share on Facebook Share on Pinterest
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