Plant Calculators

Free, standards-based tools for construction plant operators. Calculate sling angles, load weights, wind speeds, and more — right in your browser.

5 Calculators Free to Use Standards-Based

Calculate SWL reduction and mode factors when using slings at angles. Essential for safe rigging of any lifting operation.

Calculate total suspended weight including all below-hook equipment. Compare against crane SWL at radius.

Convert wind speeds between mph, m/s, km/h, and knots. Includes Beaufort scale and equipment wind limits.

Pre-plan crane operations by matching load weight to crane load chart radius limits.

Calculate the minimum safe distance for plant operating near open excavations per HSE guidance.

Built for the Job

Every calculator follows UK industry standards and HSE guidance.

Calculations follow BS 7121, LOLER 1998, LEEA guidance, and HSE publications including HSG47.

All calculations run instantly in your browser. No sign-up required, no data leaves your device.

Use on site from your phone or tablet. Fully responsive design works on any screen size.

Download CPCS CPD Mastery for offline access to all calculators, plus 4,000+ practice questions across 43 plant categories.