Yards to Millimeters Converter

About the yd to mm calculation

One yard is exactly 914.4 millimeters, so converting between them is a single multiplication. Enter any value above and the result updates as you type. Survives mainly in sport — American football fields and cricket pitches. The standard fine unit on engineering drawings and rainfall figures.

Formula

mm = yd × 914.4

1 yd = 914.4 mm
1 mm = 0.00109361 yd

Worked example

To convert 100 yd, multiply by 914.4: 100 × 914.4 = 91,440 mm.

Frequently asked questions

How many millimeters are in a yard?

There are 914.4 millimeters in one yard. To convert any amount, multiply the number of yards by 914.4.

How do I convert millimeters back to yards?

Divide instead of multiplying, or equivalently multiply by 0.00109361. One millimeter is 0.00109361 yards.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between yards and millimeters is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Yards: survives mainly in sport — American football fields and cricket pitches. Millimeters: the standard fine unit on engineering drawings and rainfall figures.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units