swap_horiz Need knots to miles per hour instead?

9 Miles per Hour to Knots

9 miles per hour equals 7.82 knots. Use the formula, worked example, and conversion table below to check the math.

9 mph = 7.82 kn
mph × 0.868977 = kn
Try: 4 mph to kn 8 mph to kn 10 mph to kn 14 mph to kn
9 mph is also
9 mph = 14.48 km/h 9 mph = 4.02 m/s 9 mph = 13.2 ft/s
mph
7.82 kn

Formula and Step-by-Step

mph × 0.868977 = kn
  1. Start with 9 mph
  2. Multiply by 0.868977: 9 × 0.868977 = 7.82
  3. Result: 9 mph = 7.82 kn

Since 1 mile per hour equals 0.868977 knots, multiply any mile per hour value by 0.868977 to convert.

Other Mile per Hour to Knot Values

Miles per Hour (mph) Knots (kn)
1 mph 0.869 kn
2 mph 1.74 kn
5 mph 4.34 kn
9 mph 7.82 kn
10 mph 8.69 kn
15 mph 13.03 kn
20 mph 17.38 kn
25 mph 21.72 kn
50 mph 43.45 kn
75 mph 65.17 kn
100 mph 86.9 kn
250 mph 217.24 kn
500 mph 434.49 kn
1,000 mph 868.98 kn
calculate Mile per Hour to Knot Converter swap_horiz Knot to Mile per Hour Converter functions Mile per Hour to Knot Formula speed All Speed Conversions

Frequently Asked Questions

9 miles per hour equals 7.82 knots.
The formula is: mph × 0.868977 = kn. See the mph to kn formula page for worked examples.
Use the knots to miles per hour converter. The reverse formula is: kn × 1.150778 = mph.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (mph × 0.868977 = kn) is based on internationally defined standards. Displayed results are rounded for readability, while the calculator uses the full-precision factor.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026