RCF / RPM Converter
Interconvert relative centrifugal force (RCF, ×g) and rotor speed (RPM) based on rotor radius.
Input Parameters
Common rotors
Click to set radius
Results
Enter the speed or force and rotor radius, then select Convert.
Formulas
RCF = 1.118 × 10⁻⁵ × r × (RPM)²
r: rotor radius (cm)
RPM = √(RCF / (1.118 × 10⁻⁵ × r))
Common centrifugation references
- Pellet cells
- 300–500 ×g / 5–10 min
- Pellet bacteria
- 4000–6000 ×g / 10–15 min
- Pellet cell debris
- 10000–20000 ×g / 20–30 min
- Pellet ribosomes
- 100000 ×g / 1–2 h
- Density-gradient centrifugation
- 100000–300000 ×g / 2–16 h