For woodworking, DIY projects, and precision work
Master your measurements! Whether you're converting metric tool specifications, working from international plans, or translating fractional measurements for digital tools, these workshop conversion charts are your essential reference.
The must-have conversion charts for every workshop. These are the most frequently used for DIY projects, woodworking, and precision work.
| Number | Fraction | Decimal (in) | Millimeters |
|---|---|---|---|
| #80 | — | 0.0135 | 0.34 |
| #50 | — | 0.0700 | 1.78 |
| #52 | 1/16" | 0.0625 | 1.59 |
| #41 | 3/32" | 0.0938 | 2.38 |
| #22 | 5/32" | 0.1562 | 3.97 |
| #11 | 3/16" | 0.1875 | 4.76 |
| #7 | 13/64" | 0.2031 | 5.16 |
| — | — | 0.2570 | 6.53 |
| — | 3/8" | 0.3750 | 9.53 |
| — | 1/2" | 0.5000 | 12.70 |
Numbered, lettered, metric, and fractional drill bit reference.
Why Essential: A woodworker's best friend! Quick reference for all standard drill bit sizes in fractions, decimals, and metric.
| Fraction | Decimal | Percent |
|---|---|---|
| 1/64 | 0.0156 | 1.56% |
| 1/32 | 0.0313 | 3.13% |
| 1/16 | 0.0625 | 6.25% |
| 1/8 | 0.1250 | 12.5% |
| 3/16 | 0.1875 | 18.8% |
| 1/4 | 0.2500 | 25% |
| 5/16 | 0.3125 | 31.3% |
| 3/8 | 0.3750 | 37.5% |
| 1/2 | 0.5000 | 50% |
| 3/4 | 0.7500 | 75% |
Fractions from 1/64 to whole numbers for math education and precision cutting.
Why Essential: Woodworking relies on fractions (1/4", 3/8", etc.). This converts to decimals for digital tools and CNC machines.
| Inches (fraction) | Inches (decimal) | Millimeters | Centimeters |
|---|---|---|---|
| 1/4" | 0.250 | 6.35 | 0.64 |
| 1/2" | 0.500 | 12.70 | 1.27 |
| 1" | 1.000 | 25.40 | 2.54 |
| 1 1/2" | 1.500 | 38.10 | 3.81 |
| 2" | 2.000 | 50.80 | 5.08 |
| 2 1/2" | 2.500 | 63.50 | 6.35 |
| 3" | 3.000 | 76.20 | 7.62 |
| 4" | 4.000 | 101.60 | 10.16 |
| 5" | 5.000 | 127.00 | 12.70 |
| 6" | 6.000 | 152.40 | 15.24 |
Imperial to metric conversions for hardware sizing and fabrication.
Why Essential: The opposite conversion you need. Perfect when working with metric tools and international specifications.
| Millimeters | Decimal (in) | Fraction (in) |
|---|---|---|
| 0.5 | 0.020 | 0 |
| 1 | 0.039 | 1/16 |
| 6.35 | 0.250 | 1/4 |
| 12.7 | 0.500 | 1/2 |
| 19 | 0.748 | 3/4 |
| 25.4 | 1.000 | 1 |
| 38.1 | 1.500 | 1 1/2 |
| 50.8 | 2.000 | 2 |
| 76.2 | 3.000 | 3 |
| 101.6 | 4.000 | 4 |
Convert millimeters to inches with decimals and fractions for woodworking and engineering.
Why Essential: Essential for precision measurements. Convert metric blueprints to imperial measurements instantly!
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Complete collection of conversions for woodworking, DIY, and precision projects
| Centimeters | Meters | Decimal (in) | Fraction (in) | ft'-in |
|---|---|---|---|---|
| 5 | 0.05 | 1.97 | 1 15/16" | 0'2" |
| 10 | 0.10 | 3.94 | 3 15/16" | 0'4" |
| 20 | 0.20 | 7.87 | 7 7/8" | 0'8" |
| 30 | 0.30 | 11.81 | 11 13/16" | 1'0" |
| 50 | 0.50 | 19.69 | 19 11/16" | 1'8" |
| 70 | 0.70 | 27.56 | 27 9/16" | 2'4" |
| 90 | 0.90 | 35.43 | 35 7/16" | 2'11" |
| 100 | 1.00 | 39.37 | 39 3/8" | 3'3" |
| 130 | 1.30 | 51.18 | 51 3/16" | 4'3" |
| 180 | 1.80 | 70.87 | 70 7/8" | 5'11" |
Convert centimeters to inches with precision for international sizing and measurements.
| Feet (ft) | Feet & Inches | Meters (m) |
|---|---|---|
| 1 | 1'0" | 0.305 |
| 3 | 3'0" | 0.914 |
| 6 | 6'0" | 1.829 |
| 10 | 10'0" | 3.048 |
| 15 | 15'0" | 4.572 |
| 20 | 20'0" | 6.096 |
| 25 | 25'0" | 7.620 |
| 30 | 30'0" | 9.144 |
| 40 | 40'0" | 12.192 |
| 50 | 50'0" | 15.240 |
Imperial to metric conversion with engineering-friendly precision and printable exports.
| Inches | ft'-in | Centimeters | Meters |
|---|---|---|---|
| 1 | 1" | 2.5 | 0.03 |
| 6 | 6" | 15.2 | 0.15 |
| 12 | 1' 0" | 30.5 | 0.30 |
| 24 | 2' 0" | 61.0 | 0.61 |
| 30 | 2' 6" | 76.2 | 0.76 |
| 36 | 3' 0" | 91.4 | 0.91 |
| 48 | 4' 0" | 121.9 | 1.22 |
| 60 | 5' 0" | 152.4 | 1.52 |
| 63 | 5' 3" | 160.0 | 1.60 |
| 72 | 6' 0" | 182.9 | 1.83 |
International shopping, sizing, and DIY conversions from inches to centimeters.
| Inches (fraction) | Inches (decimal) | Millimeters | Centimeters |
|---|---|---|---|
| 1/4" | 0.250 | 6.35 | 0.64 |
| 1/2" | 0.500 | 12.70 | 1.27 |
| 1" | 1.000 | 25.40 | 2.54 |
| 1 1/2" | 1.500 | 38.10 | 3.81 |
| 2" | 2.000 | 50.80 | 5.08 |
| 2 1/2" | 2.500 | 63.50 | 6.35 |
| 3" | 3.000 | 76.20 | 7.62 |
| 4" | 4.000 | 101.60 | 10.16 |
| 5" | 5.000 | 127.00 | 12.70 |
| 6" | 6.000 | 152.40 | 15.24 |
| Meters (m) | Feet (ft) | Feet & Inches | Reference |
|---|---|---|---|
| 0.5 | 1.64 | 1'8" | — |
| 1 | 3.28 | 3'3" | ~3 feet |
| 1.8 | 5.91 | 5'11" | Tall person |
| 3 | 9.84 | 9'10" | Standard ceiling |
| 5 | 16.40 | 16'5" | Basketball hoop |
| 10 | 32.81 | 32'10" | One story |
| 20 | 65.62 | 65'7" | — |
| 50 | 164.04 | 164'1" | — |
| 100 | 328.08 | 328'1" | — |
| 150 | 492.13 | 492'2" | — |
| Millimeters | Decimal (in) | Fraction (in) |
|---|---|---|
| 0.5 | 0.020 | 0 |
| 1 | 0.039 | 1/16 |
| 6.35 | 0.250 | 1/4 |
| 12.7 | 0.500 | 1/2 |
| 19 | 0.748 | 3/4 |
| 25.4 | 1.000 | 1 |
| 38.1 | 1.500 | 1 1/2 |
| 50.8 | 2.000 | 2 |
| 76.2 | 3.000 | 3 |
| 101.6 | 4.000 | 4 |
Convert millimeters to inches with decimals and fractions for woodworking and engineering.
Convert inch decimals to common fractions for measuring, woodworking, and machining.
Convert feet to inches for woodworking, furniture plans, and building layouts.
Convert inch fractions to decimals for woodworking, hardware sizing, and measuring.
Quick inches-to-feet conversion chart for DIY, construction, and measurements.
Convert meters to yards for sports fields, fabrics, and travel.
Small-scale length conversions for CNC, machining, and lab work.
Convert yards to meters for sports, fabrics, and international measurements.
| Number | Fraction | Decimal (in) | Millimeters |
|---|---|---|---|
| #80 | — | 0.0135 | 0.34 |
| #50 | — | 0.0700 | 1.78 |
| #52 | 1/16" | 0.0625 | 1.59 |
| #41 | 3/32" | 0.0938 | 2.38 |
| #22 | 5/32" | 0.1562 | 3.97 |
| #11 | 3/16" | 0.1875 | 4.76 |
| #7 | 13/64" | 0.2031 | 5.16 |
| — | — | 0.2570 | 6.53 |
| — | 3/8" | 0.3750 | 9.53 |
| — | 1/2" | 0.5000 | 12.70 |
| Fraction | Decimal | Percent |
|---|---|---|
| 1/64 | 0.0156 | 1.56% |
| 1/32 | 0.0313 | 3.13% |
| 1/16 | 0.0625 | 6.25% |
| 1/8 | 0.1250 | 12.5% |
| 3/16 | 0.1875 | 18.8% |
| 1/4 | 0.2500 | 25% |
| 5/16 | 0.3125 | 31.3% |
| 3/8 | 0.3750 | 37.5% |
| 1/2 | 0.5000 | 50% |
| 3/4 | 0.7500 | 75% |
Fractions from 1/64 to whole numbers for math education and precision cutting.
Metric and imperial bolt, screw, and thread pitch reference.
Convert decimals into common fractions for measuring, drafting, and math.
Nominal vs actual lumber sizes for woodworking and construction planning.
Common nail sizes and lengths for woodworking and framing projects.
Pipe nominal sizes, schedules, and diameter references for plumbing and engineering.
Pressure conversion chart for compressors, tires, and hydraulics.
Common screw sizes, thread types, and reference measurements for projects.
Wrench sizes for common bolt heads with metric and imperial references.
| Kilograms (kg) | Pounds (lb) |
|---|---|
| 1 | 2.20 |
| 2.5 | 5.51 |
| 5 | 11.02 |
| 10 | 22.05 |
| 15 | 33.07 |
| 25 | 55.12 |
| 50 | 110.23 |
| 75 | 165.35 |
| 100 | 220.46 |
| 150 | 330.69 |
Convert kilograms to pounds for cooking, fitness, shipping, and engineering with precision decimals.
| Pounds (lb) | Kilograms (kg) |
|---|---|
| 5 | 2.27 |
| 10 | 4.54 |
| 25 | 11.34 |
| 50 | 22.68 |
| 75 | 34.02 |
| 100 | 45.36 |
| 125 | 56.70 |
| 150 | 68.04 |
| 175 | 79.38 |
| 200 | 90.72 |
Convert ounces to pounds for shipping, food portions, and fitness tracking.
Mastering conversions in your workshop is essential for successful projects. Whether you're reading metric tool specifications, working from international plans, or converting measurements for digital tools, here's everything you need to know.
The two primary measurement systems in workshops are metric (millimeters, centimeters, meters) and imperial (inches, feet). Many projects require converting between them.
Quick Reference:
Pro Tip: When working with precision (CNC, machining), remember that 25.4mm = exactly 1 inch. For less critical work, 25mm ≈ 1 inch is sufficient. Always use exact conversions when working with tight tolerances.
Traditional woodworking uses fractional measurements (1/4", 3/8", 7/16"), while modern digital tools (CAD, CNC) use decimals. Understanding both systems is crucial.
Common Fractional Conversions:
Workshop Tip: Keep a Fraction to Decimal chart at your CNC station or near your design computer. This is the #1 reference chart in professional woodworking shops!
Drill bits come in multiple sizing systems: fractional sizes (1/16", 3/32"), decimal sizes (#1-#80), and metric sizes (mm). Our chart shows all three systems so you can always find the right bit.
Drill Bit Systems:
Shop Tip: Mount your Drill Bit Sizes chart above your drill press or hand drill station. This chart saves time and prevents using the wrong bit size. Many shops laminate and keep copies in multiple locations!
Scenario 1: Reading a European furniture plan in metric
The plan shows 500mm. Use your MM to Inches chart: 500mm ÷ 25.4 = 19.69 inches (approximately 19 11/16"). Your Fraction to Decimal chart confirms 11/16" = 0.6875".
Scenario 2: Using CNC with imperial specifications
Your CNC program needs decimal input. A 3/4" measurement from a traditional woodworking plan becomes 0.75" in your CAD software. Use your Fraction to Decimal chart to avoid errors.
Scenario 3: Finding the right drill bit
Your plan shows "drill 1/4" hole for wood screw". You need a slightly smaller pilot hole. Your Drill Bit Sizes chart shows the nearest metric equivalent is 6.35mm, or you can use #7 drill bit (0.201").
Browse our Essential Workshop Charts or search for specific conversions. Choose the charts that match your project needs. Most woodworkers should have at least: Drill Bit Sizes, Fraction to Decimal, and MM to Inches.
Click on any chart to customize the layout, sizing, and colors. Download as PDF for free. You can also create bundles of multiple charts in one file for convenience.
Print on cardstock (65-110 lb) or heavy matte paper for durability. Avoid glossy paper as it can be slippery. For best results, use color printing to match your workshop aesthetic.
Laminate with 3-5 mil pouches for workshop durability. Charts will resist dust, moisture, tool marks, and daily wear. You can write on laminated charts with dry-erase markers and wipe clean!
Mount charts above workbench, inside toolbox, on clipboard, or near relevant equipment (CNC, drill press, etc.). Keep multiple copies in different workshop locations for convenience. Consider laminating and mounting a master set permanently.
Converting between imperial plans and metric tools, calculating precise measurements for joinery and assembly.
Working with metric building codes, converting measurements for material orders, ensuring precise cuts.
Converting fraction-based designs to decimal format for CNC programming, achieving precision tolerances.
Finding right drill bits, scaling designs, converting between measurement systems for hobby work.
Finding right drill bits, end mills, or tool sizes for specific hole dimensions and specifications.
Converting European or metric-based plans to imperial measurements for North American workshops.
Get all 26 workshop conversion charts in one PDF file. Perfect for printing, laminating, and keeping in your workshop for quick reference.
Bundle feature will be available soon. Download individual charts now!