Laboratory centrifuge RPM-RCF calculator

Calculate rotor speed and relative centrifugal force with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use rotor speed and relative centrifugal force to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Rotor radius to sample (cm)
10
RPM or relative centrifugal force
3000
Input: 0 RPM; 1 RCF×g
0
Rotor speed (RPM)
3000
Relative centrifugal force (×g)
1,006.2

Try another scenario

Rotor radius to sample (cm)
11
RPM or relative centrifugal force
3000
Input: 0 RPM; 1 RCF×g
0
Rotor speed (RPM)
3000
Relative centrifugal force (×g)
1,106.82
Calculation method

Calculation method

Rotor speed (RPM)

sqrt(RCF/(1.118e−5 radius cm)) when input isRCF.

Relative centrifugal force (×g)

1.118e−5 radius cm RPM².

Symbols and units
a
Rotor radius to sample (cm)
b
RPM or relative centrifugal force
c
Input: 0 RPM; 1 RCF×g

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Rotor radius, RPM or relative force. Returns Converted rotation-force value. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Rotor radius to sample (cm): minimum 1e-12, maximum 1000000000000.0. RPM or relative centrifugal force: minimum 1e-12, maximum 1000000000000.0. Input: 0 RPM; 1 RCF×g: minimum 0, maximum 1.
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