Convert Ounce to Tola
Convert ounces to tolas instantly. 1 ounce = 2.4305555534 tola — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Tola to Ounce converter for the reverse conversion.
Units explained
Ounce
The (avoirdupois) ounce (oz) equals one-sixteenth of a pound, about 28.35 grams.
From Latin 'uncia', meaning a twelfth part.
US food portions, postal weights, and boxing weight classes.
Standardized as 1/16 of the international pound from 1959.
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.
Ounce 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 ounces and tolas:
To convert ounces to tolas, multiply the value in ounces by 2.4305555534. To reverse, multiply tolas by 0.4114285718.
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 Ounce converter for the reverse direction.
Step-by-step: convert ounces to tolas
- Write down the value in ounces (oz).
- Multiply that value by the factor 2.4305555534.
- The product is the equivalent value in tolas (tola).
- To reverse, multiply the tola value by 0.4114285718.
Worked examples
Example 1 — Convert 1 oz to tola:
1 × 2.4305555534 = 2.4305555534 tola
Example 2 — Convert 100 oz to tola:
100 × 2.4305555534 = 243.0555553412 tola
Real-world example — Hardware-scale dimensions
A 10-ounce fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between ounces and tolas daily when mixing metric and imperial tools.
10 oz × 2.4305555534 = 24.3055555341 tola
Real-world example — Postcard and small-object dimensions
A postcard is about 5 ounces wide. Converting to tolas is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 oz × 2.4305555534 = 12.1527777671 tola
Real-world example — Ruler-scale measurements
A 30-ounce school ruler converts cleanly to tolas — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 oz × 2.4305555534 = 72.9166666024 tola
Ounce to Tola conversion table
Standard reference values for converting ounces to tolas:
| Ounce [oz] | Tola [tola] |
|---|---|
| 0.01 | 0.0243055555 |
| 0.1 | 0.2430555553 |
| 1 | 2.4305555534 |
| 2 | 4.8611111068 |
| 3 | 7.2916666602 |
| 4 | 9.7222222136 |
| 5 | 12.1527777671 |
| 10 | 24.3055555341 |
| 20 | 48.6111110682 |
| 30 | 72.9166666024 |
| 40 | 97.2222221365 |
| 50 | 121.5277776706 |
| 100 | 243.0555553412 |
| 500 | 1215.2777767061 |
| 1000 | 2430.5555534122 |
Frequently asked questions
How many tolas is 1 ounce?
How do I convert ounces to tolas?
How do I convert tolas back to ounces?
How many tolas is 100 ounces?
Popular weight unit conversions
Convert Ounce to other weight units
Show all Ounce conversions
Metric / SI (18 units)
Avoirdupois (14 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 oz = 2.4305555534 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 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.