![]() ![]() You can measure 1/16″ to 1/2″ range of drill bits using that gauge. As for me I use this gauge to quickly identify the drill bit size in inches and millimeters. Fractionĭrill Bit Sizes in inches and mm table Measure Drill Bit Size You can see fractions, inches, and mm values for each drill bit size here. 16 mm 5/8 inch To convert CM to fractional inch, fill number into the blank CM, e.g. FRACTIONAL SIZES WIRE GAUGE SIZES LETTER SIZES 511 Main Street P.O. There are 25.4 millimeters (mm) in an inch. Below we converted the fractions to decimals so you can compare more easily: 3/32 0.09375 inches. Drill Bit Size Chartīy following the above method, this table has been prepared with available drill bit sizes. To convert MM to fractional inch, fill number into the blank MM, e.g. Caution: Due to rounding, a 3/32 drill bit will make the hole smaller than a 40 drill bit and a 7/64 drill bit will make the hole larger than a 40 drill bit. The below table will introduce you to the fractions and decimals of the inches with mm. mm Inch Equivalent Drill Size, mm Inch Equivalent Drill Size, mm Inch Equivalent Drill Size, mm Inch Equivalent 1. Metric is based on light speed in vacuum. The closest 6mm comes to inches is a scooch less than 1/4. ANSI Size Drills : Metric Size Drills and Inch Conversion: Drill (in.) Decimal: Drill (in.) Decimal: Drill (in.) Decimal: Drill (mm) Decimal (in. So we have to interchange the metric units and imperial units. Answer (1 of 8): There isn’t any direct dimension comparison. However, standard fractional drill bits come in intervals of 1/64 inches. FRACTIONAL & METRIC SIZES Inch Metric Cutting Taps Forming Taps Tap Size & Pitch Drill Size Dec. The drill size chart below gives fractional sizes and their metric conversions up to 1 inch. reduced as far as possible, so 2/64 becomes 1/32 for instance. The fractions used are always in their simplest form, i.e. We start by displaying drill bit Number 10 in decimal inches as follows: 10 drill bit 0.1935 inches. Inches Drill Size Decimal Inches Drill Size Decimal Inches Drill Size Decimal Inches Drill Size Decimal. measurement drill bits come in 1/64 inch increments. Inches are really popular in the USA but, beyond that, mostly used SI units. The purpose of this page is to give you an alternate drill bit (approximate equivalent) to drill bit gauge size Number 10 (10). You can multiply by 25.4 of inches value when you convert that to mm.Įx – 0.5 inches = 1/2″ = 0.5 inches × 25.4 = 12.7mm When you measure drill bit size in inches, you can convert it into mm using this method. Hence measure it as much as possible accuracy. Practically, you may not be able to measure the drill bit diameter more than 2 decimal places. You can check fraction and decimal conversion using the below table. When drill bit diameter size is available in mm it can convert into inches easily. 28mm which are both 0.0110 inches in diameter, the 13 and the 4.7mm which are both 0.1850 inches in diameter, the 4.8mm and the 12 which are both 0.1890 inches in diameter, and the 1/4 inch and letter E bits which are both 0.250 inches in diameter.Īll of the drill bits are listed below with their decimal equivalents.Drill Bit Size Conversion Methods 1. 22mm which are both 0.0087 inches in diameter, the 85 and the. All of these drill bits are different in size except for the 90 and. The metric sizes are dispersed throughout. ![]() Where the number 1 drill bit leaves off the letter A (smallest) begins and continues through the letter Z (largest). ![]() The fractions range from 1/64 inch to 32/64 inch. Fractional Inch Letter Drill Millimeters Number Drill Millimeters Inches Designation Tap Drill/Pilot Drill Uses. You will see drill bits with a fraction, number, letter or metric number stamped on their shank indicating their size. drill size decimal equivalent & tap drill chart decimal equivalent chart drill decimal size mm equivalent 0.10. Drill bits from zero to one half inch are sized in four ways fractions, wire gauge numbers, letters, and metric in millimeters. In general, there are 3 categories of common imperial drill sizes: fractional (in 1/64' increments), lettered (A-Z), and numbered (1-80). ![]()
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