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Convert between thread count units and assess fabric quality
Conversion Formula:
TPCM = TPI / 2.54
TPI = TPCM × 2.54
Fabric Quality Rating:
Good Quality
Standard quality, comfortable for everyday use
| TPI | TPCM | Quality Level |
|---|---|---|
| 100 | 39.4 | Budget |
| 150 | 59.1 | Basic |
| 200 | 78.7 | Good |
| 300 | 118.1 | Premium |
| 400 | 157.5 | Premium+ |
| 500 | 196.9 | Luxury |
| 600 | 236.2 | High Luxury |
| 800 | 315.0 | Ultra Luxury |
| 1000 | 393.7 | Maximum |
Thread count is the total number of horizontal and vertical threads per square inch (or square centimeter) of fabric. It's calculated by adding the number of lengthwise (warp) threads and widthwise (weft) threads woven together.
Not necessarily. While higher thread counts often indicate softer, more durable fabric, extremely high thread counts (over 600-800) may use thinner, lower-quality threads or deceptive counting methods. Quality also depends on fiber type, weave, and manufacturing process.
For quality bed sheets, look for thread counts between 200-400. This range typically offers a good balance of softness, durability, and breathability. Thread counts of 300-400 are considered premium for most cotton sheets.
To convert threads per inch (TPI) to threads per centimeter (TPCM), divide the TPI value by 2.54 (since 1 inch = 2.54 cm). For example, 200 TPI equals approximately 78.7 TPCM (200 ÷ 2.54 = 78.74).
Thread count quality depends on several factors: fiber quality (Egyptian cotton vs. regular cotton), ply (single-ply vs. multi-ply threads), weave type (percale, sateen), and manufacturing integrity. Premium single-ply long-staple cotton at 300 TPI can outperform multi-ply threads at 600 TPI.
Yes. Some manufacturers inflate thread counts by counting multi-ply threads as separate threads or using extremely thin, low-quality fibers. Always consider fiber type and weave alongside thread count when assessing fabric quality.