Lab Toolkit

Research conversion calculator

A complete bench-side calculator for the four conversions you reach for daily. Peptide molarity, serial dilutions, centrifuge g-force, and everyday lab units. Real-time math, copy-anywhere results, and a layout that survives a phone in a glove.

Peptide Molarity & Mass

Fill any three fields — leave one blank and we will solve for it.

n = m / MW · C = n / V

1 Molecular weight — from the COA

g / mol

2 Mass — amount of peptide

3 Concentration — molar or mass / volume

4 Volume — of solvent / buffer

Solving for —

Enter any three values

n = m / MW · C = n / V

Moles—

µg / mL—

Molarity (µM)—

Dilution Master

The classic C₁V₁ = C₂V₂ — give us three, we will return the stock and diluent volumes.

C₁V₁ = C₂V₂

1 Stock concentration (C₁)

2 Target concentration (C₂)

3 Final volume (V₂)

Pipette this much stock

—

V₁ = (C₂ · V₂) / C₁

Diluent / buffer —

Dilution factor —

Recipe —

G-Force Calculator

Convert between rotational speed (RPM) and relative centrifugal force (RCF / g).

RCF = 1.118 × 10⁻⁵ · r · RPM²

r Rotational radius

Common

1 RPM

rpm

2 RCF / g-force

× g

Currently solving

—

Edit RPM or RCF — the other updates

Radius (in)—

RPM at 1,000 g—

g at 10k RPM—

How to measure radius

Measure from the spindle's center axis to the bottom of the tube when the rotor is at full speed. Most fixed-angle rotors print this on the lid.

Universal Unit Converter

Quick conversions across the four scales you actually use at the bench.

Mass

⇆

Volume

⇆

Temperature

⇆

Pressure

⇆

Built for benchwork

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