Torque wrench extension correction
Adjust the wrench setting for an adapter that changes the effective lever length. Drag the graph handles to change inputs and explore the result.
Your inputs
Example values are editable. Use your measurements and product specifications. Results update as you edit.
Calculations run in your browser. Inputs are not saved or sent to analytics.
How it works
- C = × cos(); Leffective = + C
- Tsetting = × / ( + × cos())
Input and formula key
Your result
Complete the inputs to see your result.
Assumptions and limitations
Measure effective wrench length using its manufacturer’s handle reference, and adapter length between drive and fastener centers. Angle is 0° outward, 90° perpendicular and 180° inward. Assumes a straight wrench and force perpendicular to its handle; flex-head geometry is excluded. Units stay unchanged. 110 N·m, 408 mm and 28 mm at 0° give 102.936 N·m.
Sources
- TEKTON — torque wrench crowfoot correction Sources reviewed: 2026-10-10
