Vertical offset · Horizontal offset · Bend angle
Mistake: Changing units and assuming the entered numbers were converted.
Fix: Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
Calculators · Free
Rolling pipe offset worksheet
Calculate a fitter’s diagonal travel and straight cut.
01Enter your values
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02Rolling pipe offset worksheet
Runs in your browser
How it works
Calculate a fitter’s diagonal travel and straight cut.
O=√(rise²+roll²); T=O/sin(θ); advance=O/tan(θ); cut=T−t₁−t₂
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Discovery source
Your data stays yours
Inputs are processed on this page and are never sent to a server.
About this tool
Use tool ↑Calculate a fitter’s diagonal travel and straight cut.
Combine vertical and horizontal offsets with Pythagoras. Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
How to use it
- Enter your values
Vertical offset · Horizontal offset · Bend angle · First fitting takeoff · Second fitting takeoff
- Calculate / generate
Calculate a fitter’s diagonal travel and straight cut.
- Result
Straight pipe cut: 900 mm Centre-to-centre travel: 1,000 mm True offset: 500 mm
Calculation method
- Combine vertical and horizontal offsets with Pythagoras.
- Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
O=√(rise²+roll²); T=O/sin(θ); advance=O/tan(θ); cut=T−t₁−t₂
Rolling pipe offset worksheet
- Vertical offset
- 300 mm
- Horizontal offset
- 400 mm
- Bend angle
- 30 °
- First fitting takeoff
- 50 mm
- Second fitting takeoff
- 50 mm
Result
Straight pipe cut: 900 mm Centre-to-centre travel: 1,000 mm True offset: 500 mm
Frequently asked questions
Limits and key assumptions
Ideal centreline geometry only. Use fitting takeoffs, not outside diameters. Weld gaps, engagement, bend radius and site clearances require separate allowance; negative cuts are rejected.
Where does my data go?
Calculations run on your device. Form inputs are not sent to a server.
Terms and definitions
Enter your values
- Measurement system
The initial choice follows your browser region. Your choice is remembered on this device. Gallons are US gallons. Switching units keeps your numbers unchanged and interprets them in the new unit.
Numbers stay unchanged. Check the new unit and enter the intended measurement, or select an example for that system.
- Vertical offset
Combine vertical and horizontal offsets with Pythagoras.
Enter a numerical value for this quantity. Use the unit shown beside this field. mm / in
Minimum: 0 · Maximum: 1000000 mm
- Horizontal offset
Combine vertical and horizontal offsets with Pythagoras.
Enter a numerical value for this quantity. Use the unit shown beside this field. mm / in
Minimum: 0 · Maximum: 1000000 mm
- Bend angle
Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Enter a numerical value for this quantity. Use the unit shown beside this field. °
Minimum: 0.01 · Maximum: 90 °
- First fitting takeoff
Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Enter a numerical value for this quantity. Use the unit shown beside this field. mm / in
Minimum: 0 · Maximum: 1000000 mm
- Second fitting takeoff
Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Enter a numerical value for this quantity. Use the unit shown beside this field. mm / in
Minimum: 0 · Maximum: 1000000 mm
Result
- Result
Combine vertical and horizontal offsets with Pythagoras. Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Calculated from your entries using the method below.
- Straight pipe cut
Combine vertical and horizontal offsets with Pythagoras. Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Calculated from your entries using the method below.
- Centre-to-centre travel
Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Calculated from your entries using the method below.
- True offset
Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Calculated from your entries using the method below.
- Value
Combine vertical and horizontal offsets with Pythagoras. Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Calculated from your entries using the method below.
- Unit
Combine vertical and horizontal offsets with Pythagoras. Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Calculated from your entries using the method below.
- Forward advance
Combine vertical and horizontal offsets with Pythagoras. Travel equals true offset divided by sine of the equal bend angle; subtract both measured centre-to-end takeoffs for the cut.
Calculated from your entries using the method below.
Common mistakes and quick fixes
Limits and key assumptions
Mistake: Treating a result as valid outside the described scope.
Fix: Ideal centreline geometry only. Use fitting takeoffs, not outside diameters. Weld gaps, engagement, bend radius and site clearances require separate allowance; negative cuts are rejected.
Limits and key assumptions
- Ideal centreline geometry only. Use fitting takeoffs, not outside diameters. Weld gaps, engagement, bend radius and site clearances require separate allowance; negative cuts are rejected.
- Displayed results may be rounded; rounding does not add measurement precision.