Conversion Calculators

Conversions

Conversion Calculators

Inches to mm, fractions to decimals, SFM to m/min — every unit conversion machinists need.

Inch → Millimeter

mm = in × 25.4

Inches

Result

—

Millimeter → Inch

in = mm / 25.4

Millimeters

Result

—

SFM → M/min

M/min = SFM × 0.3048

SFM

Result

—

m/min

M/min → SFM

SFM = M/min / 0.3048

M/min

Result

—

SFM

RPM → SFM

SFM = (RPM × Dia) / 3.82

RPM

Diameter (in)

Result

—

SFM

PSI → Bar

Bar = PSI × 0.0689

PSI

Result

—

bar

in·lbf → Nm

Nm = in·lbf × 0.113

in·lbf

Result

—

°F → °C

°C = (°F − 32) × 5/9

°Fahrenheit

Result

—

°C

Fraction → Decimal

Dec = Num / Den

Numerator

Denominator

Result

—

decimal

IPM → mm/min

mm/min = IPM × 25.4

IPM

Result

—

mm/min

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.