Each chart is a conversion matrix or a two-column lookup: Find your source unit in the left column Read across to the target unit column The cell value is the conversion factor or converted result Multiply a factor by your value, or use the pair lookup as-is Example: 1 psi = 6.895 kPa (pressure table, row "1 psi", column "kPa") Download a featured PDF for a shop-floor or desk printout Use Ctrl+P (or Cmd+P on Mac) to print any HTML table Select "Landscape" orientation for wider matrices Bookmark this page for the HTML tables and PDF links together All values sourced from international standards: NIST — National Institute of Standards and Technology BIPM — Bureau International des Poids et Mesures Values shown to 3–6 significant figures Interactive calculators use the same library and still round the display See the About page for sources and IEEE 754 limits Look up common conversion values in HTML tables, or download printable PDFs for desk and shop-floor use. This hub covers everyday units plus engineering charts for pressure (PSI ↔ kPa), power (hp ↔ kW), speed (mph ↔ kph), and length (mm ↔ inches). Factors follow NIST and BIPM definitions. Currency and live FX rates are not listed here. How factors are sourced, how the library is updated, and how IEEE 754 rounding is treated are documented on the About page . Featured resource Engineering unit conversion chart pack Free, citable pressure, power, and length charts with HTML tables, downloadable PDFs, and NIST/BIPM source notes. Built as a bookmarkable desk reference — not a doorway page — for labs, classrooms, and resource lists. Converters for these charts Each chart has a matching published pair calculator when you need a precise value instead of a lookup table. millimeters to inches inches to millimeters kilometers to miles kilograms to pounds ounces to grams Celsius to Fahrenheit Fahrenheit to Celsius liters to gallons miles per hour to kilometers per hour horsepower to kilowatts kilowatts to horsepower watts to horsepower PSI to kilopascals atmospheres to PSI PSI to atmospheres kilopascals to bar bar to kilopascals atmospheres to bar bar to atmospheres kilowatts to Pferdestärke Pferdestärke to kilowatts watts to kilowatts kilowatts to watts horsepower to watts BTU per hour to kilowatts mils to millimeters millimeters to mils inches to microns microns to inches feet to centimeters centimeters to feet square feet to acres acres to square feet degrees to radians radians to degrees gallons to liters Embed a unit converter Add a free unit-converter widget to a classroom page, docs site, or blog. The snippet is async and small so host pages stay fast, and the Powered by AllUnitConversions credit stays visible. Get the embed code → Docs: /embed · iframe source: /widget Featured printable PDF charts Crawlable PDF downloads with descriptive names, plus HTML table companions for snippets and offline-free lookup. Featured pressure chart pressure conversion chart PDF (PSI, kPa, bar, atm) Printable PSI, kPa, bar, and atmosphere factors. Already a crawled reference — download it here or use the HTML table on the pressure chart page. horsepower to kilowatts conversion chart PDF Mechanical horsepower to kilowatt lookup for motors, generators, and engine ratings. Pair it with the HTML hp ↔ kW table on this page. kilowatts to horsepower conversion chart PDF The reverse power chart: kilowatts to mechanical horsepower, with a matching HTML companion page. power conversion chart PDF (W, kW, hp, BTU/h) Broader power units including watts, kilowatts, horsepower, and refrigeration tons. Popular conversion pairs Jump from the chart hub into the calculators people use most with these tables. PSI to kilopascals converter kilopascals to PSI converter horsepower to kilowatts converter kilowatts to horsepower converter miles per hour to kilometers per hour converter kilometers per hour to miles per hour converter millimeters to inches converter inches to millimeters converter Celsius to Fahrenheit converter Fahrenheit to Celsius converter Charts by category HTML chart pages and PDFs grouped by measurement type. Engineering charts stay on this indexable hub. Metric and imperial length charts with exact inch–millimeter factors. millimeters to inches chart inches to millimeters chart kilometers to miles chart meters to yards chart feet to inches chart inches to feet chart Engineering pressure charts for PSI, kilopascals, bar, and atmospheres. pressure conversion chart PSI to kPa converter kPa to PSI converter pressure conversion chart PDF Mechanical and electrical power charts, including horsepower ↔ kilowatts. power conversion chart horsepower to kilowatts chart

kilowatts to horsepower chart hp to kW conversion chart PDF kW to hp conversion chart PDF Road and navigation speed lookups for mph and km/h. mph to kph converter kph to mph converter mph to kph conversion chart PDF kph to mph conversion chart PDF Temperature & volume Everyday cooking, weather, and fluid-capacity charts. Celsius to Fahrenheit chart Fahrenheit to Celsius chart liters to US gallons chart volume conversion chart Engineering & science Indexable engineering, radiation, light, electrical, and angle references. engineering conversion chart radiation conversion chart light conversion chart electrical conversion chart degrees to radians chart HTML lookup tables Snippet-friendly pair tables that sit next to the PDFs. Use them when you need a value without opening a file. PSI to kPa lookup table Common tire, compressor, and process pressures. 1 psi = 6.89476 kPa. Horsepower to kilowatts lookup table Mechanical horsepower (745.7 W). 1 hp = 0.7457 kW; 1 kW = 1.341 hp. mph to kph lookup table Road-speed values. 1 mph = 1.60934 km/h. Millimeters to inches lookup table Exact relationship: 1 inch = 25.4 mm. Length Conversion Chart Quick reference for common length and distance conversions. Weight & Mass Conversion Chart Quick reference for common weight and mass conversions. Temperature Conversion Chart Common temperature values across Celsius, Fahrenheit, and Kelvin. Volume Conversion Chart Quick reference for common volume and capacity conversions. Speed Conversion Chart Quick reference for common speed and velocity conversions. Area Conversion Chart Quick reference for common area and land measurement conversions. Pressure Conversion Chart Quick reference for PSI, kilopascal, bar, and atmosphere conversions. Power Conversion Chart Quick reference for watts, kilowatts, and mechanical horsepower. More conversion tools Each category page includes detailed tables and interactive calculators. Currency converters are not listed on this hub. Common questions about conversion charts, printable PDFs, and HTML tables. Find the unit you are converting from in the left column, then read across to the unit you want. The intersection is the factor for one unit. Multiply your value by that factor. For pair tables such as PSI to kPa or hp to kW, read the matching value in the second column. The pressure conversion chart PDF (PSI, kPa, bar, and atmospheres) is linked at the top of this page and also lives on the pressure conversion chart HTML page. It is a crawlable download at /downloads/pressure-conversion-chart.pdf. Use the horsepower to kilowatts conversion chart PDF, the matching kilowatts to horsepower PDF, or the HTML tables on /hp-to-kw-conversion-chart and this hub. 1 mechanical horsepower equals 0.7457 kW. Yes. Each featured chart has a printable PDF with descriptive download text, plus an HTML table you can print from the browser (Ctrl+P or Cmd+P). PDFs are linked so search engines can crawl them. Conversion factors follow published SI and customary definitions (NIST, BIPM, and related standards). Chart values are shown with 3–6 significant digits for readability. Interactive calculators use the same library in IEEE 754 binary64 and still round the on-screen result. See the About page for sources and precision limits. Yes. The engineering conversion chart covers force, pressure, power, and energy and is a regular indexable reference with HTML tables and a printable PDF. Pressure and power charts are promoted from this hub. No. This hub does not list live currency or FX charts. Exchange rates change continuously, so they are not mixed into these indexable unit-conversion tables. Converters for these charts Each chart has a matching published pair calculator when you need a precise value instead of a lookup table. Popular pair converters millimeters to inches inches to millimeters kilometers to miles kilograms to pounds ounces to grams Celsius to Fahrenheit Fahrenheit to Celsius liters to gallons miles per hour to kilometers per hour horsepower to kilowatts kilowatts to horsepower watts to horsepower PSI to kilopascals atmospheres to PSI PSI to atmospheres kilopascals to bar bar to kilopascals atmospheres to bar bar to atmospheres kilowatts to Pferdestärke Pferdestärke to kilowatts watts to kilowatts kilowatts to watts horsepower to watts BTU per hour to kilowatts mils to millimeters millimeters to mils inches to microns microns to inches feet to centimeters centimeters to feet square feet to acres acres to square feet degrees to radians radians to degrees gallons to liters conversion formulas Learn and reference conversion cheat sheets conversion articles millimeters to inches chart power conversion chart sources and precision