Convert Pennyweight to Tola
Convert pennyweights to tolas instantly. 1 pennyweight = 0.1333333299 tola — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Tola to Pennyweight converter for the reverse conversion.
Units explained
Pennyweight
The pennyweight (dwt) equals one-twentieth of a troy ounce, 24 grains (about 1.555 g).
From the mass of a medieval English silver penny; symbol dwt from 'denarius weight'.
Jewelry making and precious-metal scrap valuation in the US.
Derived from the medieval English coinage system.
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.
Pennyweight to Tola 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 pennyweights and tolas:
To convert pennyweights to tolas, multiply the value in pennyweights by 0.1333333299. To reverse, multiply tolas by 7.5000001929.
How to use this converter
Type a value into the calculator. The result in tolas updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Tola to Pennyweight converter for the reverse direction.
Step-by-step: convert pennyweights to tolas
- Write down the value in pennyweights (dwt).
- Multiply that value by the factor 0.1333333299.
- The product is the equivalent value in tolas (tola).
- To reverse, multiply the tola value by 7.5000001929.
Worked examples
Example 1 — Convert 1 dwt to tola:
1 × 0.1333333299 = 0.1333333299 tola
Example 2 — Convert 100 dwt to tola:
100 × 0.1333333299 = 13.3333329904 tola
Real-world example — Ruler-scale measurements
A 30-pennyweight school ruler converts cleanly to tolas — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 dwt × 0.1333333299 = 3.9999998971 tola
Real-world example — Hardware-scale dimensions
A 10-pennyweight fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between pennyweights and tolas daily when mixing metric and imperial tools.
10 dwt × 0.1333333299 = 1.333333299 tola
Real-world example — Postcard and small-object dimensions
A postcard is about 5 pennyweights wide. Converting to tolas is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 dwt × 0.1333333299 = 0.6666666495 tola
Pennyweight to Tola conversion table
Standard reference values for converting pennyweights to tolas:
| Pennyweight [dwt] | Tola [tola] |
|---|---|
| 0.01 | 0.0013333333 |
| 0.1 | 0.013333333 |
| 1 | 0.1333333299 |
| 2 | 0.2666666598 |
| 3 | 0.3999999897 |
| 4 | 0.5333333196 |
| 5 | 0.6666666495 |
| 10 | 1.333333299 |
| 20 | 2.6666665981 |
| 30 | 3.9999998971 |
| 40 | 5.3333331962 |
| 50 | 6.6666664952 |
| 100 | 13.3333329904 |
| 500 | 66.666664952 |
| 1000 | 133.3333299039 |
Frequently asked questions
How many tolas is 1 pennyweight?
How do I convert pennyweights to tolas?
How do I convert tolas back to pennyweights?
How many tolas is 100 pennyweights?
Popular weight unit conversions
Convert Pennyweight to other weight units
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 dwt = 0.1333333299 tola) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.