Convert Tola to Dram (apothecary/troy)
Convert tolas to drams (apothecary/troy) instantly. 1 tola = 3 dram (apothecary/troy) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (apothecary/troy) to Tola converter for the reverse conversion.
Units explained
Tola
The tola equals 180 troy grains, about 11.6638 grams (three-eighths of a troy ounce).
From Sanskrit 'tula', meaning a balance or weighing.
The primary unit for gold and silver across India, Pakistan, and Nepal.
Fixed at 180 grains under British India in 1833.
Dram (apothecary/troy)
The apothecary (troy) dram equals one-eighth of a troy ounce, about 3.888 grams.
From the apothecaries' system rooted in the Greek 'drachma'.
Historical pharmacy and medicine compounding.
Part of the apothecaries' system of weights used through the 19th century.
Tola to Dram (apothecary/troy) 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 tolas and drams (apothecary/troy):
To convert tolas to drams (apothecary/troy), multiply the value in tolas by 3. To reverse, multiply drams (apothecary/troy) by 0.3333333333.
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 Tola converter for the reverse direction.
Step-by-step: convert tolas to drams (apothecary/troy)
- Write down the value in tolas (tola).
- Multiply that value by the factor 3.
- The product is the equivalent value in drams (apothecary/troy) (dr ap).
- To reverse, multiply the dram (apothecary/troy) value by 0.3333333333.
Worked examples
Example 1 — Convert 1 tola to dr ap:
1 × 3 = 3 dr ap
Example 2 — Convert 100 tola to dr ap:
100 × 3 = 300 dr ap
Real-world example — Ruler-scale measurements
A 30-tola school ruler converts cleanly to drams (apothecary/troy) — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 tola × 3 = 90 dr ap
Real-world example — Hardware-scale dimensions
A 10-tola fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between tolas and drams (apothecary/troy) daily when mixing metric and imperial tools.
10 tola × 3 = 30 dr ap
Real-world example — Postcard and small-object dimensions
A postcard is about 5 tolas wide. Converting to drams (apothecary/troy) is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 tola × 3 = 15 dr ap
Tola to Dram (apothecary/troy) conversion table
Standard reference values for converting tolas to drams (apothecary/troy):
| Tola [tola] | Dram (apothecary/troy) [dr ap] |
|---|---|
| 0.01 | 0.03 |
| 0.1 | 0.3 |
| 1 | 3 |
| 2 | 6 |
| 3 | 9 |
| 4 | 12 |
| 5 | 15 |
| 10 | 30 |
| 20 | 60 |
| 30 | 90 |
| 40 | 120 |
| 50 | 150 |
| 100 | 300 |
| 500 | 1500 |
| 1000 | 3000 |
Frequently asked questions
How many drams (apothecary/troy) is 1 tola?
How do I convert tolas to drams (apothecary/troy)?
How do I convert drams (apothecary/troy) back to tolas?
How many drams (apothecary/troy) is 100 tolas?
Popular weight unit conversions
Convert Tola to other weight units
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (10 units)
Indian / South Asian (5 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 tola = 3 dr ap) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.