Engineering calculators for faster design

Simplify your design calculations and unit conversions! The Bossard calculators and converters make life easier for engineers, technicians, designers and students involved in the development and assembly of bolted joints. Start saving time and download the app or view the calculators online now! 

Simplify your design calculations and unit conversions! The Bossard calculators and converters make life easier for engineers, technicians, designers and students involved in the development and assembly of bolted joints. Choose among 20 calculators, including converters, geometrical and mechanical calculators. Simply enter your values and easily convert units, such as torque, pressure, force, hardness and more, or calculate drill hole sizes, thread engagement, torque and preload, tolerances for shafts and more.

Your Benefits:

• Fast access to converters and calculators, all in one place.
• No more tedious calculations or studying of tables necessary.
• Reliable results from your trusted expert of fastening solutions.

Access 20 calculators and converters for free on our website or download the iOS app for your iPhone or iPad. Our recent updates now support the online calculator in English, German, Chinese, Danish, French, Korean and Polish. The app, now in a slick new design, is available in English and German.

Start saving time and download the app or view the calculators online now!