Rigging Sling Angle Calculator

Leg Tension & Design Factor

$0.99 · Designed for iPad. Not verified for macOS.

Also Included In

4,000lb load on a 2-leg bridle at 45 degrees - tension per leg over the WLL? Angle from vertical, design factor, pass/fail per ASME B30. $0.99 one-time, no login. About to pick a load with a multi-leg sling and need to verify the tension per leg is within safe limits? Exceeding the sling angle threshold can cause catastrophic failure. This app computes angle, tension per leg, and design factor for 2, 3, and 4-leg configurations instantly. Enter load weight, sling length, and vertical height. Get sling angle from vertical, tension per leg, design factor, and pass/fail check against the 60° angle limit. WHAT IT CALCULATES: - Sling angle from vertical - Tension per leg for 2, 3, and 4-leg configurations - Total tension across all legs - Design factor (total tension ÷ load weight) - Pass/fail safety check SLING CONFIGURATION: - Multi-leg bridle (2, 3, 4 legs) - Metric (kg/m) and Imperial (lb/ft) units KEY FEATURES: - Built-in sling angle reference table - Color-coded safety status - Works completely offline - No account or login required Built for riggers, crane operators, ironworkers, and safety officers.

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Updated app name and metadata.

Version 1.0.4

The developer, Shanghai Sheyuan Network Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    Accessibility

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    Information

    Seller
    Shanghai Sheyuan Network Technology Co., Ltd.
    Size
    975.9 KB
    Category
    Utilities
    Compatibility
    Requires iOS 26.2 or later.
    • iPhone
      Requires iOS 26.2 or later.
    • iPad
      Requires iPadOS 26.2 or later.
    • Mac
      Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.2 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Sheyuan Inc.
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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