Cable Bend Radius Calculator
Use this cable bend radius workflow when the manufacturer or project bend-radius multiplier is known and you need a quick radius estimate.
- Minimum bend radius
- in
- Minimum bend diameter
- in
- Bend arc length
- in
- Multiplier used
- x
Calculation details
- Calculation basis
- Selection boundary
Recent results
Formulas
- Minimum bend radius = cable outside diameter x bend radius multiplier
- Minimum bend diameter = minimum bend radius x 2
- Bend arc length = minimum bend radius x bend angle in radians
Use this calculator
Estimate minimum bend radius, bend diameter, and bend arc length from cable outside diameter, bend multiplier, and bend angle.
Read the result
Review the calculated values with their displayed units and assumptions. The result is a planning aid for the stated inputs, not a final equipment or installation decision.
Check before final work
This cable bend radius estimate uses a user-entered multiplier. It does not replace manufacturer instructions, listing limits, pulling setup, raceway routing, or code compliance.
FAQs
Where should the multiplier come from?
Use manufacturer, listing, or project data for the exact cable. Do not treat the default as a universal requirement.
Is bend radius measured to the cable centerline?
This calculator reports the multiplier result from the entered cable outside diameter. Confirm the measurement convention required by the cable or raceway instructions.
Can this approve a pull route?
No. Pull route, sidewall pressure, cable limits, and bend count need separate review.