Reduced Planck constants to kilogram meters squared per second
Type a value in ħ to get it in kg·m²/s instantly.
1.055×10⁻³⁴kg·m²/s
That's 2× as much as the spin of an electron, while a rotating molecule is 9.5× more. That is about 1 quanta of ħ.
Convert the other way: kg·m²/s to ħ
What it means
How much spin is that?
Angular momentum has the same dimensions as action, which is why the same constant, ħ, quantizes both.
The math
How to convert ħ to kg·m²/s
To convert reduced Planck constants to kilogram meters squared per second, multiply by 1.055×10⁻³⁴.
Example: 1 ħ × 1.055×10⁻³⁴ = 1.055×10⁻³⁴ kg·m²/s.
In the other direction, 1 kg·m²/s = 9.483×10³³ ħ.
Every unit
Your angular momentum in every unit
Tables
ħ to kg·m²/s conversion table
| ħ | kg·m²/s |
|---|---|
| 1×10⁻³⁴ ħ | 1.055×10⁻⁶⁸ kg·m²/s |
| 1×10⁻²⁰ ħ | 1.055×10⁻⁵⁴ kg·m²/s |
| 1×10⁻¹⁰ ħ | 1.055×10⁻⁴⁴ kg·m²/s |
| 0.001 ħ | 1.055×10⁻³⁷ kg·m²/s |
| 0.1 ħ | 1.055×10⁻³⁵ kg·m²/s |
| 1 ħ | 1.055×10⁻³⁴ kg·m²/s |
| 10 ħ | 1.055×10⁻³³ kg·m²/s |
| 100 ħ | 1.055×10⁻³² kg·m²/s |
| 10,000 ħ | 1.055×10⁻³⁰ kg·m²/s |
kg·m²/s to ħ conversion table
| kg·m²/s | ħ |
|---|---|
| 1×10⁻³⁴ kg·m²/s | 0.948252 ħ |
| 1×10⁻²⁰ kg·m²/s | 9.483×10¹³ ħ |
| 1×10⁻¹⁰ kg·m²/s | 9.483×10²³ ħ |
| 0.001 kg·m²/s | 9.483×10³⁰ ħ |
| 0.1 kg·m²/s | 9.483×10³² ħ |
| 1 kg·m²/s | 9.483×10³³ ħ |
| 10 kg·m²/s | 9.483×10³⁴ ħ |
| 100 kg·m²/s | 9.483×10³⁵ ħ |
| 10,000 kg·m²/s | 9.483×10³⁷ ħ |
Quick answers
Quick answers
- How many kg·m²/s is 1 ħ?
- 1 ħ is 1.055×10⁻³⁴ kg·m²/s.
- How many kg·m²/s is 10 ħ?
- 10 ħ is 1.055×10⁻³³ kg·m²/s.
The units
About these units
Reduced Planck constants (ħ)
The quantum step: 1.055 × 10⁻³⁴ J·s. Electron spin is exactly ħ/2.
Kilogram meters squared per second (kg·m²/s)
The SI unit, for anything from a flywheel to a planet.
Keep going