Distance divided by time.
Foot per Days to Maches Converter — ft/d to Ma
Convert Foot per Days (ft/d) to Mach (Ma) using the exact conversion factor (1 foot per days = 1.036697e-8 mach). See the formula, worked examples, and conversion table.
Foot per Days to Maches converter
Converter
Speed Converter
Convert road, aviation, marine, lab, and scientific speed units.
Context values
Some unit families need one extra value for a physically accurate result.
Mach at standard sea-level conditions.
Result = input x 3.52777778e-6 / 340.29.
Speed uses meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Foot per Days to Maches
Foot per Days and Mach both describe speed, and the conversion matters whenever a maritime or aviation speed (knots) needs to be compared against a road speed (mph). Specifically: Distance divided by time, and mach at standard sea-level conditions.
Formula
maches = foot per days × 1.036697e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 foot per days equals 0.00000352777777778 base units, and 1 mach equals 340.29 base units, so dividing one by the other gives the direct foot per days-to-mach factor of 1.036697e-8.
Simple example
1 ft/d × 1.036697e-8 = 1.036697e-8 Ma
1 foot per days = 1.036697e-8 maches.
Real-world example
10 ft/d × 1.036697e-8 = 1.036697e-7 Ma
10 foot per days = 1.036697e-7 maches.
Conversion table
| Foot per Days (ft/d) | Mach (Ma) |
|---|---|
| 1 ft/d | 1.036697e-8 Ma |
| 5 ft/d | 5.183487e-8 Ma |
| 10 ft/d | 1.036697e-7 Ma |
| 25 ft/d | 2.591744e-7 Ma |
| 50 ft/d | 5.183487e-7 Ma |
| 100 ft/d | 0.0000010367 Ma |
Reverse conversion: Mach to Foot per Days
1.036697e-8 Ma × 96460157.48 = 0.9999995588 ft/d
1.036697e-8 maches = 0.9999995588 foot per days.
foot per days = maches × 96460157.4803
For a page dedicated to this direction, see Mach to Foot per Days.
Understanding the Foot per Days (ft/d)
Distance divided by time.
Understanding the Mach (Ma)
Mach at standard sea-level conditions.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many maches are in 1 foot per days?
1 foot per days equals 1.036697e-8 maches, using the exact defined conversion factor rather than an estimate.
How do I convert foot per days to mach?
Multiply the foot per days value by 1.036697e-8. The converter above does this instantly to whatever precision you set.
How do I convert mach back to foot per days?
Use the reverse factor: 1 mach equals 96,460,157.48 foot per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a foot per days?
Foot per Days (ft/d) is a unit of speed.
What is a mach?
Mach (Ma) is a unit of speed.
Is the foot per days to mach conversion exact?
Yes. Both foot per days and mach are defined by fixed standards rather than physical artifacts, so the factor of 1.036697e-8 used above is exact to as many digits as you choose to display.