1 Planck volume
4.222 × 10⁻¹⁰² LVolume · definition
A theoretical scale made from physical constants. It is not a proven smallest object or a hard physical limit.
Volume & capacity
Just how much is 1 Planck volume?
Microscopic
1 ℓP³
4.2221 × 10⁻¹⁰² Llitres
4.2221 × 10⁻¹⁰⁵ m³cubic metres
1.1154 × 10⁻¹⁰² US galUS gallons
9.2873 × 10⁻¹⁰³ UK galUK gallons
01
1 Planck volume4.222 × 10⁻¹⁰² LVolume · definition
02
Planck length4.222 × 10⁻¹⁰² LVolume · theoretical
These are equal-volume cubes. Edge lengths grow with the cube root of capacity; the cubes do not depict container exteriors.
A little perspective
1 Planck volume and Planck length have approximately the same volume.
Measurements, assumptions & sources +
1 Planck volume
A theoretical scale made from physical constants. It is not a proven smallest object or a hard physical limit.
Planck length
A theoretical scale formed from the speed of light, reduced Planck constant and gravitational constant. It is not experimentally established as the smallest possible length. The area and volume are derived mathematical scales.
NIST — 2022 CODATA fundamental constants
The marked volume is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
The visual compares volume with volume. The records below preserve each value’s basis and caveats.
Planck length
4.222 × 10⁻¹⁰² LVolume · theoretical
A theoretical scale formed from the speed of light, reduced Planck constant and gravitational constant. It is not experimentally established as the smallest possible length. The area and volume are derived mathematical scales.
- Comparing
- Volume ↔ Volume
- Relative size
- The two selected measurements are approximately equal.
How to read the visual
The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.
- Planck length is labelled theoretical; treat the displayed value as a comparison anchor rather than false precision.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
A little smaller. A little larger.