Pressure Converter

Convert between PSI, bar, and kilopascals using the exact NIST-defined pound-force and pascal relationships.

Works for any combination of the units above -- every value converts through the same verified base-unit math used on the individual pages.

How Pressure Units Relate

Pressure units all reduce to the pascal, the SI unit defined as one newton per square meter. PSI (pounds per square inch) traces back to the pound-force and the inch, two US customary definitions, while bar and kilopascal are metric multiples of the pascal, which is why bar and kPa convert to each other with a clean 1:100 ratio but PSI doesn't.

All Pressure Converters

Each of these has its own page with the exact formula, a reference table, and answers to common questions.

Bar to PSI Kilopascal to PSI PSI to Bar

Cedrick Reese

Ready Utilities was founded by Cedrick Reese, a retired veteran and web developer who enjoys building free, user-friendly online tools that simplify everyday tasks. His journey began in the early 2000s with affiliate marketing and niche site development, which grew into a passion for creating practical digital utilities and calculators. After retiring, he earned a Computer Systems Technician certificate from UEI College, completed Electro-Mechanical Technologies at Tulsa Welding School, and finished the Carpentry program at Florida State College at Jacksonville. Today, he combines his technical background and craftsmanship by building furniture using traditional woodworking methods, gardening, and developing helpful online tools for users worldwide.