G-Code & CNC Calculators

G-Code & CNC

G-Code & CNC Calculators

Feed per rev, backlash, canned cycles, arc corrections, and program size estimates.

Feed Per Revolution

IPR = Feed Rate / RPM

Feed Rate (IPM)

RPM

Result

—

in/rev

Backlash Steps

Steps = Backlash / Step Size

Backlash (in)

Step Size (in)

Result

—

steps

Arc Feed Correction

F_arc = F × (R / r_tool)

Linear Feed (IPM)

Arc Radius (in)

Tool Radius (in)

Result

—

IPM

Canned Cycle Z Depth

Z = Clearance + Depth + Tip

Clearance (in)

Hole Depth (in)

Tip Allowance (in)

Result

—

Program Size Estimate

Lines ≈ Path / Step × Axes

Path Length (in)

Point Spacing (in)

Axes/Block

Result

—

lines

Radius Compensation

Offset = Tool Dia / 2

Tool Diameter (in)

Result

—

Spiral Feed Rate

Feed = RPM × CL × Flutes

RPM

Chip Load (in)

Flutes

Result

—

IPM

G99 Feed/Rev

F = IPM / RPM

IPM

RPM

Result

—

in/rev

The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.