Calculate surface pürüzlülüğü ra, rq and rz karşılaştırma using engineering units and the defined formula.
Surface Roughness Ra, Rq and Rz Comparison Calculator
Calculate surface roughness ra, rq and rz comparison calculator using engineering units and the defined formula.
Result chart
Formula and calculation steps
Note: Results are for preliminary engineering evaluation. Verify assumptions, material data, safety factors, applicable standards, and manufacturer limits before final design. Tool version 2.7.1
How to use this calculator
- Enter the measurements and operating values.
- Select the correct engineering unit for each value.
- Press Calculate to view the result and intermediate values.
- Review the equation steps and download a PDF report if needed.
Equation used
Rq≈1,11–1,25Ra; Rz≈4–7Ra
How to evaluate the result
Results are for preliminary engineering evaluation. Verify assumptions, material data, safety factors, applicable standards, and manufacturer limits before final design.
Technical references
Input guide for Surface Roughness Ra, Rq and Rz Comparison Calculator
Calculate surface roughness ra, rq and rz comparison calculator using engineering units and the defined formula. The table below summarises the inputs and example starting values.
| Parameter | Example value | Units and description |
|---|---|---|
| Bilinen parametre | ra | Ra, Rq, Rz |
| Roughness değeri | 1.6 | µm |
| Profile / proses | general | Genel işlenmiş yüzey, Taşlanmış yüzey, Tornalanmış yüzey |
Example calculation scenario
For an initial check, enter the example values from the table, select the required units, and choose Calculate. Review the main result and equation, then replace the examples with measured or design data from your system.
Common mistakes when using Surface Roughness Ra, Rq and Rz Comparison Calculator
- Ignoring transmission efficiency, service factor, or transient operating conditions.
- Mixing unit systems without checking the selected units.
- Using example values instead of measured or design data from the actual system.
- Accepting the result without checking safety factors, duty cycle, and manufacturer limits.
Fundamental equation: Rq≈1,11–1,25Ra; Rz≈4–7Ra
Frequently asked questions
What is Surface Roughness Ra, Rq and Rz Comparison Calculator used for?
Calculate surface roughness ra, rq and rz comparison calculator using engineering units and the defined formula. Use it for preliminary engineering sizing and independent result checks.
Which equation does this calculator use?
The calculation is based on Rq≈1,11–1,25Ra; Rz≈4–7Ra. Inputs are converted according to the selected units.
Can the result be used as a final design value?
Results are for preliminary engineering evaluation. Verify assumptions, material data, safety factors, applicable standards, and manufacturer limits before final design. Confirm the result against the current standard, project specification, and manufacturer data.
