Bridle calculator for entertainment rigging
What a bridle calculator should do
A bridle is rarely a textbook symmetric problem. Pickup points shift, beams sit at different elevations, and you need leg lengths and leg tensions that match the geometry you typed in—not a generic template from a spreadsheet.
RigThis runs the physics in real time as you adjust inputs. Leg lengths update, load shares shift with barycentric-style weighting, and you get a clear read on whether the angles and tensions are in a range you are willing to fly.
2-leg bridles (Free)
The free tier includes a full 2-leg bridle solver. Enter beam positions, vertical drops, basket geometry, and offsets. RigThis returns leg lengths, leg forces, and included angles so you can compare options before steel goes in the air.
- Real-time updates as geometry changes
- Visual diagram tied to your inputs
- Safety alerts when angles or tensions exceed your limits
- Imperial and metric unit support
3-leg bridles (Pro)
Pro unlocks 3-leg bridle math for picks where a two-point solution is not enough. Same workflow: punch in the room, read the numbers, and keep moving on load-in.
Safety alerts before you commit
RigThis flags leg tension, point loads, and steep bridle angles (60° and beyond) before you have committed to a configuration. It is a calculation aid—not a substitute for a qualified rigger, engineer, or venue-approved procedures—but it helps you catch hot numbers early.
Get RigThis
Download the free bridle calculator on Google Play or the App Store. Pro is a one-time $49.99 purchase—no subscription.
Also see the truss load distribution calculator for motor loads and DLF planning.