Mile/Hour to Yard/Second Converter

Speed Converter

18 units available

Decimals:

From

To

0.488889

1 mph = 0.488889 yd/s

Formula:

yd/s = mph × 0.4888888889

With your value: 1 mph = 0.48888889 yd/s

How big is that?

Everyday references on a logarithmic scale, all expressed in mile/hour so you can sanity-check the result.

Your value1.00 mph

Walking pace (3.1× your value)3.13 mph

Cycling (12× your value)12.3 mph

Urban speed limit (50 km/h) (31× your value)31.1 mph

Cheetah sprint (65× your value)64.9 mph

Motorway (110 km/h) (68× your value)68.5 mph

Other Mile/Hour to Yard/Second conversions

2 mph to yd/s 3 mph to yd/s 4 mph to yd/s 5 mph to yd/s 6 mph to yd/s 7 mph to yd/s 8 mph to yd/s

Mile/Hour to Yard/Second Conversion Table

Mile/Hour (mph)	Yard/Second (yd/s)
0.5	0.244444
1	0.488889
2	0.977778
5	2.444444
10	4.888889
15	7.333333
20	9.777778
25	12.222222
50	24.444444
100	48.888889
250	122.222222
500	244.444444
1000	488.888889

Yard/Second to Mile/Hour Conversion Table

Yard/Second (yd/s)	Mile/Hour (mph)
0.5	1.022727
1	2.045455
2	4.090909
5	10.227273
10	20.454545
15	30.681818
20	40.909091
25	51.136364
50	102.272727
100	204.545455
250	511.363636
500	1,022.727273
1000	2,045.454545

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Mile/Hour (mph)

Speed

Exact conversion

Derived quantity: a defined length divided by a defined time interval.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Yard/Second (yd/s)

Speed

Exact conversion

Derived quantity: a defined length divided by a defined time interval.

Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)

Bureau International des Poids et Mesures · Reviewed 2026-07-01

How to Convert Mile/Hour to Yard/Second

To convert from Mile/Hour (mph) to Yard/Second (yd/s), multiply the value by 0.4888888889.

Formula: yd/s = mph × 0.4888888889

Reverse: mph = yd/s × 2.0454545455

Step-by-Step Example

Start with your value in Mile/Hour. For example: 5 mph
Multiply by the conversion factor: 5 x 0.4888888889
The result is: 2.444444 yd/s

About Mile/Hour

Miles per hour is the standard unit of speed in the US and UK for vehicles and weather reporting.

Common uses: speed limits (US/UK), vehicle speed, baseball.

About Yard/Second

The yard/second (yd/s) is a unit of speed and velocity. One yard/second equals 0.9144 metre per seconds. UnitConvertLab converts it against every other speed unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: speed calculations, engineering and science, education.

Frequently Asked Questions

How many Yard/Second are in 1 Mile/Hour?

There are exactly 0.4888888889 Yard/Second in 1 Mile/Hour. This means the conversion factor from Mile/Hour to Yard/Second is 0.4888888889.

What is the formula to convert Mile/Hour to Yard/Second?

The formula to convert Mile/Hour to Yard/Second is: yd/s = mph × 0.4888888889. For example, to convert 10 Mile/Hour to Yard/Second, you would multiply 10 by 0.4888888889.

What is a Mile/Hour?