Feet Per Second to Miles Per Hour Converter (ft/s to mph)

How to convert feet per second to miles per hour

To convert feet per second to miles per hour, multiply the number of feet per second by 0.68182 (or divide by 1.467).

Example: 88 ft/s = 60 mph.

88 feet per second is exactly 60 mph.

Common ft/s to mph conversions

1 ft/s = 0.68182 mph
10 ft/s = 6.818 mph
88 ft/s = 60 mph
100 ft/s = 68.182 mph

Feet Per Second to Miles Per Hour conversion chart

ft/s	mph
0.25 ft/s	0.17045 mph
0.5 ft/s	0.34091 mph
0.75 ft/s	0.51136 mph
1 ft/s	0.68182 mph
1.5 ft/s	1.023 mph
2 ft/s	1.364 mph
2.5 ft/s	1.705 mph
3 ft/s	2.045 mph
3.5 ft/s	2.386 mph
4 ft/s	2.727 mph
4.5 ft/s	3.068 mph
5 ft/s	3.409 mph
6 ft/s	4.091 mph
7 ft/s	4.773 mph
8 ft/s	5.455 mph
9 ft/s	6.136 mph
10 ft/s	6.818 mph
11 ft/s	7.5 mph
12 ft/s	8.182 mph
13 ft/s	8.864 mph
14 ft/s	9.545 mph
15 ft/s	10.227 mph
16 ft/s	10.909 mph
18 ft/s	12.273 mph
20 ft/s	13.636 mph
24 ft/s	16.364 mph
25 ft/s	17.045 mph
30 ft/s	20.455 mph
32 ft/s	21.818 mph
35 ft/s	23.864 mph
40 ft/s	27.273 mph
45 ft/s	30.682 mph
50 ft/s	34.091 mph
55 ft/s	37.5 mph
60 ft/s	40.909 mph
64 ft/s	43.636 mph
65 ft/s	44.318 mph
70 ft/s	47.727 mph
75 ft/s	51.136 mph
80 ft/s	54.545 mph
85 ft/s	57.955 mph
88 ft/s	60 mph
90 ft/s	61.364 mph
100 ft/s	68.182 mph
110 ft/s	75 mph
120 ft/s	81.818 mph
125 ft/s	85.227 mph
128 ft/s	87.273 mph
150 ft/s	102.27 mph
175 ft/s	119.32 mph
180 ft/s	122.73 mph
200 ft/s	136.36 mph
220 ft/s	150 mph
250 ft/s	170.45 mph
300 ft/s	204.55 mph
400 ft/s	272.73 mph
500 ft/s	340.91 mph
750 ft/s	511.36 mph
1,000 ft/s	681.82 mph

Metric vs. U.S. customary units

The United States uses U.S. customary units — inches, feet, miles, pounds, gallons and degrees Fahrenheit — for most everyday purposes. Canada officially adopted the metric system in the 1970s, so road signs, weather forecasts, gas pumps and food labels use kilometers, degrees Celsius, liters and grams. In practice many Canadians still use feet and inches for height, pounds for body weight and square feet for homes, which is why conversions come up constantly on both sides of the border.

Exact conversion factors

Since 1959 the inch, foot, yard, mile and pound have been defined in metric terms, so these conversions are exact, not approximations:

1 inch = 2.54 cm exactly, so 1 foot = 30.48 cm and 1 mile = 1.609344 km.
1 pound = 0.45359237 kg exactly; 1 ounce = 28.349523125 g.
1 U.S. gallon = 3.785411784 liters. The imperial gallon used in the U.K. is larger: 4.54609 liters.
1 acre = 4,046.8564224 m², and 1 hectare = 10,000 m² (about 2.471 acres).

Temperature is different because the scales have different zero points: °F = °C × 9/5 + 32 and °C = (°F − 32) × 5/9. Water freezes at 0 °C (32 °F) and boils at 100 °C (212 °F) at sea level, and −40 is the same in both scales.

Quick mental shortcuts

Kilometers to miles: multiply by 0.6 (100 km ≈ 60 miles; the exact figure is 62.1).
Kilograms to pounds: double it and add 10% (70 kg → 140 + 14 = 154 lb).
Celsius to Fahrenheit: double it and add 30 for a rough estimate (20 °C → 70 °F; the exact answer is 68 °F).
Liters to U.S. gallons: divide by 4 for a quick estimate (40 L ≈ 10 gallons; exactly 10.57).

Cooking and recipe conversions

U.S. recipes measure by volume — cups, tablespoons and teaspoons — while Canadian and most international recipes use milliliters and grams. A U.S. cup is about 237 mL, but Canadian "metric" measuring cups hold 250 mL, so the difference adds up in baking. For flour, sugar and butter, weighing in grams is more accurate than cups because the density of each ingredient differs.

Popular conversions

Pick a conversion below for a dedicated page with the formula, worked examples and a complete conversion chart.

Tips for accurate conversions

Keep full precision until the final step and round only the answer — rounding intermediate numbers can add noticeable errors, especially in recipes, construction and engineering. Always check which gallon, ounce or ton a source means: U.S. and imperial units share names but not sizes, and a "fluid ounce" measures volume while an "ounce" of weight measures mass. For temperatures, remember that a temperature difference converts differently from a temperature reading: a change of 10 °C equals a change of 18 °F, without adding 32.

Popular unit conversions

Frequently asked questions

How many centimeters are in an inch?

Exactly 2.54 centimeters. To convert inches to centimeters, multiply by 2.54; to convert centimeters to inches, divide by 2.54.

How do I convert kg to pounds?

Multiply kilograms by 2.20462. For example, 70 kg × 2.20462 = 154.3 lb.

What is the formula for Celsius to Fahrenheit?

Multiply by 9/5 (1.8) and add 32. For example, 25 °C × 1.8 + 32 = 77 °F.

Is a U.S. gallon the same as a Canadian gallon?

No. Canada sells gas by the liter, but when gallons are mentioned in Canada they are sometimes imperial gallons (4.546 L), which are about 20% larger than U.S. gallons (3.785 L).

How many square feet are in a square meter?

About 10.764 square feet. A 1,000 sq ft home is roughly 92.9 m².

Sources & methodology

This calculator was last reviewed on November 2, 2026. Figures are based on the following official and primary sources:

NIST – Handbook 44, Appendix C: General Tables of Units of Measurement

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