Indian to US Ring Size Converter: Full Conversion Chart
If you've purchased jewelry in India or are shopping from Indian retailers, understanding the Indian ring sizing system is essential. The Indian ring size scale is completely different from the US system, using a numerical range from 1 to 36 based on ring circumference in millimeters. This comprehensive guide explains the Indian sizing system and provides a complete conversion chart mapping Indian sizes 1-36 to their US equivalents, including diameter measurements to help verify your conversions.
Understanding the Indian Ring Sizing System
The Indian ring sizing system is used throughout India and several other South Asian countries. Unlike the US system which ranges from sizes 1-13, the Indian system uses a scale from 1-36, with each increment representing 1 millimeter of circumference. This means Indian rings come in many more size increments than American rings, providing precise sizing options for the Indian market. The system is circumference-based, making it similar in philosophy to European sizing but with different numerical ranges.
How Indian Sizes Are Measured
Indian ring sizes are determined by measuring the inner circumference of the ring in millimeters. The size number directly corresponds to this circumference measurement. For example, an Indian size 16 ring has an inner circumference of approximately 48-49 millimeters. Because the Indian system measures the full circumference rather than just the diameter, it provides more granular sizing options. This metric-based approach makes it easy to verify sizes if you have the actual ring circumference measurement. Many jewelers in India can measure your finger and provide you with your exact size number based on this system.
Why Indian Sizes Are Higher Numbers
Indian ring sizes appear to be larger numbers because they are measuring circumference in millimeters directly. A typical adult ring circumference is anywhere from 45-65 millimeters, so Indian sizes range from approximately 45 to 65. In comparison, the US system compresses this information into sizes 3-13. Both systems measure the same range of ring sizes, but Indian numbers are higher because they're expressing the actual circumference in millimeters rather than a compressed numerical scale.
Indian to US Ring Size Conversion Chart
Use this comprehensive table to convert your Indian ring size to the US equivalent. The chart includes diameter measurements in millimeters to help you verify the accuracy of your size. This conversion table covers the complete standard range used in Indian jewelry, from small sizes suitable for children to large sizes for adults. Each Indian size has been matched with its closest US equivalent based on matching circumferences.
| Indian Size | Circumference (mm) | Diameter (mm) | US Size |
|---|---|---|---|
| 1 | 43 | 13.69 | 1.5 |
| 2 | 44 | 14.01 | 2 |
| 3 | 45 | 14.32 | 2.5 |
| 4 | 46 | 14.64 | 3 |
| 5 | 47 | 14.97 | 3.5 |
| 6 | 48 | 15.29 | 4 |
| 7 | 49 | 15.61 | 4.5 |
| 8 | 50 | 15.92 | 5 |
| 9 | 51 | 16.24 | 5.5 |
| 10 | 52 | 16.56 | 6 |
| 11 | 53 | 16.88 | 6.5 |
| 12 | 54 | 17.19 | 7 |
| 13 | 55 | 17.51 | 7.5 |
| 14 | 56 | 17.83 | 8 |
| 15 | 57 | 18.15 | 8.5 |
| 16 | 58 | 18.46 | 9 |
| 17 | 59 | 18.78 | 9.5 |
| 18 | 60 | 19.10 | 10 |
| 19 | 61 | 19.42 | 10.5 |
| 20 | 62 | 19.73 | 11 |
| 21 | 63 | 20.05 | 11.5 |
| 22 | 64 | 20.37 | 12 |
| 23 | 65 | 20.69 | 12.5 |
| 24 | 66 | 21.00 | 13 |
| 25 | 67 | 21.32 | 13.5 |
| 26 | 68 | 21.64 | 14 |
| 27 | 69 | 21.96 | 14.5 |
| 28 | 70 | 22.27 | 15 |
| 29 | 71 | 22.59 | 15.5 |
| 30 | 72 | 22.91 | 16 |
| 31 | 73 | 23.23 | 16.5 |
| 32 | 74 | 23.54 | 17 |
| 33 | 75 | 23.86 | 17.5 |
| 34 | 76 | 24.18 | 18 |
| 35 | 77 | 24.50 | 18.5 |
| 36 | 78 | 24.81 | 19 |
Understanding Indian Sizing in Detail
The Indian ring sizing system is one of the most precise sizing systems in the world because each size increment represents only 1 millimeter of circumference. This precision is valuable for ensuring a perfect fit, particularly in Indian jewelry traditions where rings are often worn regularly and must be extremely comfortable. The metric basis of the system also makes it compatible with European sizing approaches, though the numerical values remain different due to different starting points and measurement traditions.
Converting Your Ring Size
If you have a ring that fits well and you know its Indian size, use our conversion table to find the equivalent US size. Simply locate your Indian size in the left column and read across to find the corresponding US size. You can also verify the size by measuring your ring's inner diameter and comparing it to the diameter column in our chart. If you're shopping from an Indian jeweler, ask them for your exact ring size measurement in millimeters—this will help you verify the conversion using our table. The diameter measurements are particularly useful if you have physical ring sizers or calipers at home.
Shopping from India
When purchasing jewelry from Indian retailers or jewelers, it's important to specify the Indian size number rather than trying to convert to US sizes. Many Indian jewelers may be unfamiliar with US sizing, and providing the Indian size ensures you receive the correct ring size. If an Indian jeweler measures your finger, they will typically give you a size number from their system. If you need to order by mail or online, always confirm the exact Indian size with the retailer before placing your order. Most reputable Indian jewelry companies have customer service representatives who can help verify sizing.
Related Conversion Resources
- Indian Ring Sizing Standards - Learn more about jewelry sizing in India
- Universal Ring Size Calculator - Find your size using measurements
- Ring Circumference to Size Converter - Convert measurements directly
Frequently Asked Questions
What is the Indian ring sizing system?
The Indian ring sizing system uses numbers from 1 to 36, where each number corresponds to the ring's inner circumference in millimeters. Indian size 16 equals a circumference of 58 millimeters. This metric-based system is used throughout India and some other South Asian countries.
How do I convert my Indian ring size to US?
Use our conversion chart above. Find your Indian size number and read across to find the US equivalent. For example, Indian size 12 converts to approximately US size 7. The chart includes diameter measurements for verification.
Why are Indian ring sizes so different from US sizes?
Indian sizes measure the actual circumference in millimeters, so they use numbers in the 40-78 range. US sizes use a compressed scale from 1-13 that represents the same range of ring sizes. Both systems measure the same physical rings, just with different numbering approaches.
Can I measure my own ring to find the Indian size?
Yes. If you have a ruler or measuring tape, measure the inner circumference of your ring in millimeters. That number is very close to your Indian size. For example, if your ring measures 52mm circumference, your Indian size is approximately 10. You can verify this with our chart.
What if I need a size between Indian numbers?
The Indian system already provides very granular sizing with 1mm increments. If you need a size that falls between standard sizes, work directly with your jeweler who can measure your finger precisely and provide your exact size based on your specific circumference measurement.
Is the Indian system used only in India?
The Indian system is primarily used in India and by Indian jewelers. However, some neighboring South Asian countries may also use variations of this system. When purchasing from international retailers, always confirm which sizing system they use—some may list sizes in multiple systems.
How accurate are these conversions?
These conversions are based on standard circumference and diameter measurements. Since the two systems measure the same physical rings, conversions are highly accurate. However, individual rings may vary slightly due to band width and material. For custom rings, always provide your exact measured size to the jeweler.
