Mass and Weight · Unit Converter

Convert Ounce to Planck Mass

Convert ounces to planck mass instantly. 1 ounce = 1302402.3916828607 planck mass — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Planck Mass to Ounce converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Avoirdupois

Ounce

What is a ounce?

The (avoirdupois) ounce (oz) equals one-sixteenth of a pound, about 28.35 grams.

Origin of the ounce

From Latin 'uncia', meaning a twelfth part.

Where it is used

US food portions, postal weights, and boxing weight classes.

When and where it was developed

Standardized as 1/16 of the international pound from 1959.

Scientific / Atomic

Planck Mass

What is a planck mass?

The Planck mass equals about 2.18E-8 kg, formed from the constants h-bar, c, and G.

Origin of the planck mass

Introduced by Max Planck in 1899 as part of a system of natural units.

Where it is used

Theoretical physics and quantum-gravity research.

When and where it was developed

Defined by Planck in 1899 from fundamental constants.

Ounce to Planck Mass conversion formula

Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.

The relationship between ounces and planck mass:

1 oz = 1302402.3916828607 mP
1 mP = 7.678119e-7 oz

To convert ounces to planck mass, multiply the value in ounces by 1302402.3916828607. To reverse, multiply planck mass by 7.678119e-7.

How to use this converter

Type a value into the calculator. The result in planck mass updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Planck Mass to Ounce converter for the reverse direction.

Step-by-step: convert ounces to planck mass

  1. Write down the value in ounces (oz).
  2. Multiply that value by the factor 1302402.3916828607.
  3. The product is the equivalent value in planck mass (mP).
  4. To reverse, multiply the planck mass value by 7.678119e-7.

Worked examples

Example 1 — Convert 1 oz to mP:
1 × 1302402.3916828607 = 1302402.3916828607 mP

Example 2 — Convert 100 oz to mP:
100 × 1302402.3916828607 = 1.302402e+8 mP

Real-world example — Centimeter to wavelength scale

One ounce equals 10 million planck mass. Physics curricula use this kind of conversion to relate everyday measurements to atomic and optical scales.

1 oz × 1302402.3916828607 = 1302402.3916828607 mP

Real-world example — Small-scale to atomic-scale

One ounce equals 10 million planck mass — useful for physics curricula that relate everyday measurements to atomic and optical scales.

1 oz × 1302402.3916828607 = 1302402.3916828607 mP

Ounce to Planck Mass conversion table

Standard reference values for converting ounces to planck mass:

Ounce [oz]Planck Mass [mP]
0.0113024.0239168286
0.1130240.2391682861
11302402.3916828607
22604804.7833657213
33907207.1750485823
45209609.5667314427
56512011.9584143031
101.302402e+7
202.604805e+7
303.907207e+7
405.20961e+7
506.512012e+7
1001.302402e+8
5006.512012e+8
10001.302402e+9

Frequently asked questions

How many planck mass is 1 ounce?
1 ounce equals 1302402.3916828607 planck mass.
How do I convert ounces to planck mass?
Multiply the value in ounces by 1302402.3916828607 to get planck mass.
How do I convert planck mass back to ounces?
Multiply the value in planck mass by 7.678119e-7, or use the Planck Mass to Ounce converter.
How many planck mass is 100 ounces?
100 ounces equals 1.302402e+8 planck mass, because 100 × 1302402.3916828607 = 1.302402e+8.

Convert Ounce to other weight units

Show all Ounce conversions
Metric / SI (18 units)
Ounce to Attogram (ag) Ounce to Femtogram (fg) Ounce to Picogram (pg) Ounce to Nanogram (ng) Ounce to Microgram (µg) Ounce to Milligram (mg) Ounce to Centigram (cg) Ounce to Decigram (dg) Ounce to Gram (g) Ounce to Dekagram (dag) Ounce to Hectogram (hg) Ounce to Kilogram (kg) Ounce to Quintal (metric) (q) Ounce to Metric Ton (t) Ounce to Gigagram (Gg) Ounce to Teragram (Tg) Ounce to Petagram (Pg) Ounce to Exagram (Eg)
Avoirdupois (14 units)
Ounce to Grain (gr) Ounce to Dram (avoirdupois) (dr) Ounce to Pound (lb) Ounce to Clove (clove) Ounce to Stone (US) (st) Ounce to Stone (UK) (st) Ounce to Quarter (US) (qr) Ounce to Quarter (UK) (qr) Ounce to Hundredweight (US) (cwt) Ounce to Hundredweight (UK) (cwt) Ounce to Wey (wey) Ounce to Kilopound (kip) (kip) Ounce to Ton (short, US) (sh tn) Ounce to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Ounce to Point (1/100 carat) (pt) Ounce to Carat (metric) (ct) Ounce to Scruple (apothecary) (s ap) Ounce to Pennyweight (dwt) Ounce to Momme (mom) Ounce to Mace (mace) Ounce to Dram (apothecary/troy) (dr ap) Ounce to Troy Ounce (oz t) Ounce to Tael (tael) Ounce to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Ounce to Ratti (ratti) Ounce to Masha (masha) Ounce to Tola (tola) Ounce to Chittack (Chatank) (chittack) Ounce to Seer (Ser) (seer) Ounce to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Ounce to Electron Mass (rest) (me) Ounce to MeV/c2 (MeV/c²) Ounce to Muon Mass (mµ) Ounce to Atomic Mass Unit (u) Ounce to Proton Mass (mp) Ounce to Neutron Mass (mn) Ounce to Deuteron Mass (md) Ounce to Carbon-12 Atom Mass (C-12) Ounce to Planck Mass (mP)
Astronomical (4 units)
Ounce to Lunar Mass (Moon) (M☾) Ounce to Earth's Mass (M⊕) Ounce to Jupiter Mass (MJ) Ounce to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Ounce to Lepton (Biblical Roman) (lepton) Ounce to Quadrans (Biblical Roman) (quadrans) Ounce to Assarion (Biblical Roman) (assarion) Ounce to Gerah (Biblical Hebrew) (gerah) Ounce to Drachma (Biblical Greek) (drachma) Ounce to Denarius (Biblical Roman) (denarius) Ounce to Bekan (Biblical Hebrew) (bekah) Ounce to Didrachma (Biblical Greek) (didrachma) Ounce to Shekel (Biblical Hebrew) (shekel) Ounce to Tetradrachma (Biblical Greek) (tetra) Ounce to Mina (Biblical Greek) (mina) Ounce to Mina (Biblical Hebrew) (mina) Ounce to Talent (Biblical Greek) (talent) Ounce to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Ounce to Poundal (pdl) Ounce to Ton (assay) (US) (AT) Ounce to Ton (assay) (UK) (AT) Ounce to Kilogram-force square second/meter (hyl) Ounce to Slug (slug)

Sources & references

Conversion factor (1 oz = 1302402.3916828607 mP) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.