Cheat sheets index.
All 28 printable reference charts. Each chart has a free PDF, cites its source standard and shows values in imperial and metric units.
All cheat sheets
ASTM Steel Grades Chart
Common ASTM steel grades — yield strength, tensile strength, and typical applications. The quick reference for picking the right steel for structural...
AWG Wire Gauge Chart
Complete AWG wire gauge chart from 4/0 down to 30. Diameter in inches and mm, area in mm² and kcmil, resistance per 1000 ft, and NEC ampacity at 60°C...
Bearing Size Chart
Common ball bearings — bore, outside diameter, and width for 6xxx-series single-row deep-groove bearings. A printable, standards-sourced reference you can
Bolt Torque Chart
Recommended tightening torque for common bolts — Grade 5/8 imperial and Grade 8.8/10.9/12.9 metric. Dry, lubricated, and anti-seize values. A printable,
Capacitor Code Chart
Three-digit codes, tolerance letters, microfarad/nanofarad/picofarad — every common capacitor marking decoded. The companion to the resistor color codes sheet.
Cooking Conversion Chart
Cups ↔ mL, oven temperatures across Fahrenheit, Celsius, and gas marks, and ingredient density (grams per cup) for accurate baking. A printable,
Copper Pipe Size Chart
Copper pipe size chart for Type K, L and M tube (ASTM B88): outside diameter, wall, inside diameter, weight, color codes and water volume, from 1/4 to 12 in.
Decibel Chart
Common sound levels from silence to shockwave — with NIOSH-recommended maximum daily exposure times. A printable, standards-sourced reference you can
Drill Bit Size Chart
Complete drill bit size chart. Fractional, number (#1–80), letter (A–Z), and metric (mm) sizes — sorted by diameter, with closest cross-matches. Print-ready.
Force & Weight Conversion Chart
Real-world forces and weights from structural loads to atomic forces. Newtons, pound-force, kilogram-force side by side. A printable, standards-sourced
HVAC Duct Size Chart
CFM capacity vs round duct diameter, friction loss reference, and round-to-rectangular equivalent sizing. A printable, standards-sourced reference you can
ISO Tolerance Chart
Complete ISO 286 tolerance reference: IT grade values across size ranges, plus common hole and shaft fits (H7, h7, g6, k6, n6, p6, s6) with actual...
NPT Pipe Thread Chart
NPT pipe thread chart from 1/16 to 4 in: threads per inch, pipe OD, pitch diameters, hand-tight and effective thread length, the taper and the NPT formulas.
O-Ring Size Chart
AS568 dash-number O-ring sizes — the US standard. Dash number, inside diameter, cross-section, and series. ISO 3601 metric equivalents noted where applicable.
Paper Size Chart
Complete paper size reference: ISO 216 A and B series, US Letter / ANSI series, with mm + inches and bleed/safe-area guidance for print design.
Photography Exposure Chart
Aperture, shutter speed, and ISO as equivalent stops. The exposure triangle quantified — how to trade depth of field for motion blur for noise, and the EV...
NPS Pipe Size Chart
NPS pipe size chart for Schedule 40 and 80 steel and PVC pipe: outside diameter, wall and inside diameter. Why a 1-inch pipe is not 1 inch wide. Free PDF.
Plastic Resin Codes Chart
The seven recycling codes plus common engineering plastics — chemical name, typical uses, temperature range, and recycling implications. A printable,
Pressure Units Chart
Common pressure levels — atmospheric, blood pressure, tire pressure, hydraulic systems, deep-sea — all on one chart across psi, bar, kPa, atm, mmHg, and inH₂O.
Resistor Color Code Chart & Calculator
Resistor color band decoder — digits, multipliers, tolerances, and temperature coefficients. 4-band, 5-band, and 6-band charts side by side.
Sheet Metal Gauge Chart
Sheet metal gauge numbers mean different thicknesses depending on the material. Steel, galvanized steel, aluminum, and copper all use the same numbers —...
Shoe Size Conversion Chart
Men's, women's, and kids' shoe sizes across US, UK, EU, and centimeters. Plus the formulas and the gotchas (US men's vs women's is offset by 1.5).
SMD Resistor Code Chart
Decode SMD resistor markings — 3-digit (E24), 4-digit (E96 precision), and EIA-96 (1% tolerance) codes. A printable, standards-sourced reference you can
Socket Size Chart
SAE and metric socket sizes in order, 4 mm to 40 mm and 1/4 in to 1-1/2 in, in mm and inches with the closest match in the other system. Free printable PDF.
Tap Drill Chart
Tap drill and clearance hole sizes for every common screw thread — imperial UN (UNC + UNF) and metric M-thread. A printable, standards-sourced reference you
Temperature Reference Chart
Freezing and boiling points of common substances, comfort and cooking temperatures, body temperatures, weather extremes — everything on one chart, in...
Thermocouple Types Chart
Compare J, K, T, E, N, R, S, B thermocouple types — temperature ranges, accuracy, sensitivity, and color codes (US/ANSI and IEC/international).
Pilot Hole Size Chart
Drill bit selection for wood screws across hardwood, softwood, plywood, and MDF. Pilot, clearance, and countersink sizes for every common screw gauge.