🔄 Unit Conversion Calculator
Convert between measurement systems quickly and accurately
Length Conversion
Torque Conversion
Quick Reference:
1 ft-lb = 1.356 Nm
1 Nm = 0.738 ft-lb
1 in-lb = 0.113 Nm
1 Nm = 0.738 ft-lb
1 in-lb = 0.113 Nm
Decimal to Fraction
| Decimal | Fraction | Decimal | Fraction |
|---|---|---|---|
| 0.0625 | 1/16" | 0.5000 | 1/2" |
| 0.1250 | 1/8" | 0.5625 | 9/16" |
| 0.1875 | 3/16" | 0.6250 | 5/8" |
| 0.2500 | 1/4" | 0.7500 | 3/4" |
| 0.3125 | 5/16" | 0.8750 | 7/8" |
| 0.3750 | 3/8" | 1.0000 | 1" |
Bolt Grade Equivalents
| SAE Grade | Metric Class | Tensile Strength | Material |
|---|---|---|---|
| Grade 2 | 4.6 / 4.8 | 60,000 psi | Low carbon steel |
| Grade 5 | 8.8 | 120,000 psi | Medium carbon steel |
| Grade 8 | 10.9 | 150,000 psi | Alloy steel |
| - | 12.9 | 180,000 psi | Alloy steel |
| A307 | 4.6 | 60,000 psi | Low carbon steel |
| A325 | 8.8 | 120,000 psi | Structural bolt |
Understanding Grade Markings:
SAE Grades: Look for radial lines on the bolt head. Grade 5 has 3 lines, Grade 8 has 6 lines.
Metric Classes: Numbers stamped on the bolt head (e.g., 8.8, 10.9).
Higher numbers = Higher strength