Electrical and Engineering
True Position Calculator
True Position Calculator calculate diametrical true position, radial error, available tolerance, and pass or fail status from measured and basic coordinates.
Electrical and Engineering
True Position Calculator
Calculate diametrical true position, radial error, available tolerance, and pass or fail status from measured and basic coordinates.
Formula
True position = 2 x sqrt((measured X-basic X)^2 + (measured Y-basic Y)^2).
About the True Position Calculator
Calculate diametrical true position, radial error, available tolerance, and pass or fail status from measured and basic coordinates. This tool keeps the requested measurements separate and applies the named method instead of substituting an unrelated general estimate.
How the True Position Calculator Works
Coordinate deviations form a radial vector; diametrical positional error is compared with the stated tolerance plus any entered bonus tolerance.
Formula
True position = 2 x sqrt((measured X-basic X)^2 + (measured Y-basic Y)^2).
The calculation runs in your browser. Values are validated for required ranges, compatible units, and method-specific restrictions before results are displayed.
Required Inputs
- Basic X coordinate (required) - enter in mm.
- Basic Y coordinate (required) - enter in mm.
- Measured X coordinate (required) - enter in mm.
- Measured Y coordinate (required) - enter in mm.
- Specified positional tolerance (required) - enter in mm.
- Applicable bonus tolerance (required) - enter in mm.
Results Reported
The result panel reports the final answer and the intermediate quantities needed to check the calculation:
- X deviation (mm)
- Y deviation (mm)
- Radial location error (mm)
- Diametrical true position (mm)
- Available tolerance (mm)
- Tolerance margin (mm)
- Result
True Position Calculator Example
Select Example Data in the calculator to load this reproducible input set:
| Input | Example value |
|---|---|
| Basic X coordinate | 25 mm |
| Basic Y coordinate | 40 mm |
| Measured X coordinate | 25.08 mm |
| Measured Y coordinate | 39.94 mm |
| Specified positional tolerance | 0.25 mm |
| Applicable bonus tolerance | 0.05 mm |
How to Use the Calculator
- Confirm that the calculator title and formula match the quantity you need.
- Enter every required value using the unit shown with its field.
- Select Example Data to inspect a valid input set, or enter your own values and select Calculate.
- Review all reported values and the displayed formula before using the answer.
- Use Copy Result or Download CSV when you need a reusable record.
Accuracy and Limitations
Use coordinate units consistently and apply the datum reference frame, material condition, projection, and bonus rules from the controlling drawing and standard.
Keep units consistent, use measurements that represent the actual situation, retain full precision during the calculation, and round only the final answer. Professional decisions may require current official rules, field measurements, laboratory methods, or specialist review.
Frequently Asked Questions
What does the True Position Calculator calculate?
Calculate diametrical true position, radial error, available tolerance, and pass or fail status from measured and basic coordinates.
Which formula does the True Position Calculator use?
True position = 2 x sqrt((measured X-basic X)^2 + (measured Y-basic Y)^2). Coordinate deviations form a radial vector; diametrical positional error is compared with the stated tolerance plus any entered bonus tolerance.
How should I use the True Position Calculator result?
Use coordinate units consistently and apply the datum reference frame, material condition, projection, and bonus rules from the controlling drawing and standard.