Mass and Weight · Unit Converter

Convert Point (1/100 carat) to Dram (apothecary/troy)

Convert points (1/100 carat) to drams (apothecary/troy) instantly. 1 point (1/100 carat) = 0.0005144119 dram (apothecary/troy) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (apothecary/troy) to Point (1/100 carat) 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

Troy & Apothecary

Point (1/100 carat)

What is a point (1/100 carat)?

A point equals one-hundredth of a carat, or 2 milligrams.

Origin of the point (1/100 carat)

A subdivision of the metric carat for very small stones.

Where it is used

The diamond trade, for sub-carat stones.

When and where it was developed

Adopted alongside the metric carat in the 20th-century gem trade.

Troy & Apothecary

Dram (apothecary/troy)

What is a dram (apothecary/troy)?

The apothecary (troy) dram equals one-eighth of a troy ounce, about 3.888 grams.

Origin of the dram (apothecary/troy)

From the apothecaries' system rooted in the Greek 'drachma'.

Where it is used

Historical pharmacy and medicine compounding.

When and where it was developed

Part of the apothecaries' system of weights used through the 19th century.

Point (1/100 carat) to Dram (apothecary/troy) conversion formula

The relationship between points (1/100 carat) and drams (apothecary/troy):

1 pt = 0.0005144119 dr ap
1 dr ap = 1943.9673 pt

To convert points (1/100 carat) to drams (apothecary/troy), multiply the value in points (1/100 carat) by 0.0005144119. To reverse, multiply drams (apothecary/troy) by 1943.9673.

How to use this converter

Type a value into the calculator. The result in drams (apothecary/troy) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Dram (apothecary/troy) to Point (1/100 carat) converter for the reverse direction.

Step-by-step: convert points (1/100 carat) to drams (apothecary/troy)

  1. Write down the value in points (1/100 carat) (pt).
  2. Multiply that value by the factor 0.0005144119.
  3. The product is the equivalent value in drams (apothecary/troy) (dr ap).
  4. To reverse, multiply the dram (apothecary/troy) value by 1943.9673.

Worked examples

Example 1 — Convert 1 pt to dr ap:
1 × 0.0005144119 = 0.0005144119 dr ap

Example 2 — Convert 100 pt to dr ap:
100 × 0.0005144119 = 0.0514411945 dr ap

Real-world example — Plastic film and laminate thickness

A 500-point (1/100 carat) sheet is a typical spec for ID-card laminates and film overlays. Converting to drams (apothecary/troy) aligns the value with the unit most CAD systems and material datasheets prefer.

500 pt × 0.0005144119 = 0.2572059725 dr ap

Real-world example — Packaging gauge

A 4-point (1/100 carat) plastic bag thickness is a common spec for grocery and freezer bags. Converting from points (1/100 carat) to drams (apothecary/troy) is what packaging buyers do whenever they bridge US and metric supplier quotes.

4 pt × 0.0005144119 = 0.0020576478 dr ap

Point (1/100 carat) to Dram (apothecary/troy) conversion table

Standard reference values for converting points (1/100 carat) to drams (apothecary/troy):

Point (1/100 carat) [pt]Dram (apothecary/troy) [dr ap]
0.015.144119e-6
0.15.144119e-5
10.0005144119
20.0010288239
30.0015432358
40.0020576478
50.0025720597
100.0051441195
200.0102882389
300.0154323584
400.0205764778
500.0257205973
1000.0514411945
5000.2572059725
10000.5144119451

Frequently asked questions

How many drams (apothecary/troy) is 1 point (1/100 carat)?
1 point (1/100 carat) equals 0.0005144119 dram (apothecary/troy).
How do I convert points (1/100 carat) to drams (apothecary/troy)?
Multiply the value in points (1/100 carat) by 0.0005144119 to get drams (apothecary/troy).
How do I convert drams (apothecary/troy) back to points (1/100 carat)?
Multiply the value in drams (apothecary/troy) by 1943.9673, or use the Dram (apothecary/troy) to Point (1/100 carat) converter.
How many drams (apothecary/troy) is 100 points (1/100 carat)?
100 points (1/100 carat) equals 0.0514411945 drams (apothecary/troy), because 100 × 0.0005144119 = 0.0514411945.

Convert Point (1/100 carat) to other weight units

Show all Point (1/100 carat) conversions
Metric / SI (18 units)
Point (1/100 carat) to Attogram (ag) Point (1/100 carat) to Femtogram (fg) Point (1/100 carat) to Picogram (pg) Point (1/100 carat) to Nanogram (ng) Point (1/100 carat) to Microgram (µg) Point (1/100 carat) to Milligram (mg) Point (1/100 carat) to Centigram (cg) Point (1/100 carat) to Decigram (dg) Point (1/100 carat) to Gram (g) Point (1/100 carat) to Dekagram (dag) Point (1/100 carat) to Hectogram (hg) Point (1/100 carat) to Kilogram (kg) Point (1/100 carat) to Quintal (metric) (q) Point (1/100 carat) to Metric Ton (t) Point (1/100 carat) to Gigagram (Gg) Point (1/100 carat) to Teragram (Tg) Point (1/100 carat) to Petagram (Pg) Point (1/100 carat) to Exagram (Eg)
Avoirdupois (15 units)
Point (1/100 carat) to Grain (gr) Point (1/100 carat) to Dram (avoirdupois) (dr) Point (1/100 carat) to Ounce (oz) Point (1/100 carat) to Pound (lb) Point (1/100 carat) to Clove (clove) Point (1/100 carat) to Stone (US) (st) Point (1/100 carat) to Stone (UK) (st) Point (1/100 carat) to Quarter (US) (qr) Point (1/100 carat) to Quarter (UK) (qr) Point (1/100 carat) to Hundredweight (US) (cwt) Point (1/100 carat) to Hundredweight (UK) (cwt) Point (1/100 carat) to Wey (wey) Point (1/100 carat) to Kilopound (kip) (kip) Point (1/100 carat) to Ton (short, US) (sh tn) Point (1/100 carat) to Ton (long, UK) (long tn)
Troy & Apothecary (9 units)
Point (1/100 carat) to Carat (metric) (ct) Point (1/100 carat) to Scruple (apothecary) (s ap) Point (1/100 carat) to Pennyweight (dwt) Point (1/100 carat) to Momme (mom) Point (1/100 carat) to Mace (mace) Point (1/100 carat) to Dram (apothecary/troy) (dr ap) Point (1/100 carat) to Troy Ounce (oz t) Point (1/100 carat) to Tael (tael) Point (1/100 carat) to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Point (1/100 carat) to Ratti (ratti) Point (1/100 carat) to Masha (masha) Point (1/100 carat) to Tola (tola) Point (1/100 carat) to Chittack (Chatank) (chittack) Point (1/100 carat) to Seer (Ser) (seer) Point (1/100 carat) to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Point (1/100 carat) to Electron Mass (rest) (me) Point (1/100 carat) to MeV/c2 (MeV/c²) Point (1/100 carat) to Muon Mass (mµ) Point (1/100 carat) to Atomic Mass Unit (u) Point (1/100 carat) to Proton Mass (mp) Point (1/100 carat) to Neutron Mass (mn) Point (1/100 carat) to Deuteron Mass (md) Point (1/100 carat) to Carbon-12 Atom Mass (C-12) Point (1/100 carat) to Planck Mass (mP)
Astronomical (4 units)
Point (1/100 carat) to Lunar Mass (Moon) (M☾) Point (1/100 carat) to Earth's Mass (M⊕) Point (1/100 carat) to Jupiter Mass (MJ) Point (1/100 carat) to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Point (1/100 carat) to Lepton (Biblical Roman) (lepton) Point (1/100 carat) to Quadrans (Biblical Roman) (quadrans) Point (1/100 carat) to Assarion (Biblical Roman) (assarion) Point (1/100 carat) to Gerah (Biblical Hebrew) (gerah) Point (1/100 carat) to Drachma (Biblical Greek) (drachma) Point (1/100 carat) to Denarius (Biblical Roman) (denarius) Point (1/100 carat) to Bekan (Biblical Hebrew) (bekah) Point (1/100 carat) to Didrachma (Biblical Greek) (didrachma) Point (1/100 carat) to Shekel (Biblical Hebrew) (shekel) Point (1/100 carat) to Tetradrachma (Biblical Greek) (tetra) Point (1/100 carat) to Mina (Biblical Greek) (mina) Point (1/100 carat) to Mina (Biblical Hebrew) (mina) Point (1/100 carat) to Talent (Biblical Greek) (talent) Point (1/100 carat) to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Point (1/100 carat) to Poundal (pdl) Point (1/100 carat) to Ton (assay) (US) (AT) Point (1/100 carat) to Ton (assay) (UK) (AT) Point (1/100 carat) to Kilogram-force square second/meter (hyl) Point (1/100 carat) to Slug (slug)

Sources & references

Conversion factor (1 pt = 0.0005144119 dr ap) verified against the following authoritative sources:

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