MM To Feet Converter

1. Type the length in millimeters, for example a dimension from a metric plan.
2. Pick the nearest fraction you can read: 1/16 in on most tape measures, 1/32 in on a steel rule, 1/64 in for fine work.
3. Read decimal feet for math, and the feet, inches and fraction line for marking. The error shows how far the mark is from the true length.

Each result answers a different question:

A millimeter to foot conversion expresses a metric length in feet by dividing by 304.8. The millimeter is one thousandth of a meter. The foot is a US customary and UK imperial unit equal to 12 inches, or 1/3 yard.

The factor comes from the 1959 agreement that fixed the international foot at exactly 0.3048 m. NIST SP 811 lists the foot as 3.048 x 10^-1 m, and NIST Handbook 44 repeats 1 foot = 0.304 8 meter exactly. In the UK, the Weights and Measures Act 1985 defines the foot as 1/3 of a yard of 0.9144 metre, which gives the same length.

People who search mm to feet usually hold a metric size and need to mark it with an imperial tape. Room and ceiling heights on metric plans, board and sheet lengths, and a person's height in mm are typical cases. A bare decimal such as 6.56 ft is hard to mark, which is why this page splits the answer into feet, inches and a fraction.

The converter divides by 304.8 for decimal feet, then works in inches to build the feet, inches and fraction split.

1. Divide by 304.8. 2,000 / 304.8 = 6.56168 ft.
2. Find total inches. 2,000 / 25.4 = 78.74016 in. At 1/16 in: 78.74016 x 16 = 1,259.84, which rounds to 1,260 sixteenths.
3. Split the count. 1,260 / 192 = 6 whole feet, with 108 sixteenths left. 108 / 16 = 6 in with 12/16 left, so the mark is 6 ft 6 3/4 in.
4. Check the error. 6 ft 6 3/4 in is 78.75 in, or 2,000.25 mm, so the mark is 0.25 mm long.

Rounding once, on the total count of sixteenths, avoids a common trap. Rounding the inches first can leave 12 in on the inch side, which the tool carries into the next foot.

A 1,800 mm height. 1,800 / 304.8 = 5.90551 ft. The split is 5 ft 10.866 in, and to the nearest 1/16 it is 5 ft 10 7/8 in, 0.225 mm long.

A 2,440 mm sheet. 2,440 / 304.8 = 8.00525 ft. That is 96.063 in, so the nearest 1/32 is 8 ft 0 1/16 in, just 0.0125 mm short. A 2,440 mm length is 1.6 mm longer than a true 8 ft (2,438.4 mm).

A 3,000 mm ceiling height. 3,000 / 304.8 = 9.84252 ft. At 1/16 that reads 9 ft 10 1/8 in, 0.375 mm long. At 1/64 it is 9 ft 10 7/64 in, only 0.022 mm short.

A 600 mm cabinet width. 600 / 304.8 = 1.9685 ft, which is 1 ft 11 5/8 in at 1/16 precision, 0.075 mm long. For short parts in inches only, the mm to inches converter gives drill and wrench fractions too.

A reverse check. 10 ft x 304.8 = 3,048 mm exactly. Any whole or decimal foot value converts to mm with no rounding.

Decimal feet never change for a given mm length. The feet, inches and fraction line depends on three things.

The Fraction You Choose

At 1/16 in the worst rounding error is half a step, 0.794 mm. At 1/32 in it is 0.397 mm, and at 1/64 in it is 0.198 mm. Choose the finest mark you can see on your tape or rule.

Where the Length Falls Between Marks

2,440 mm lands 0.0125 mm from a 1/16 mark. 1,220 mm lands 0.7875 mm from one, almost the worst case. The error shows which case you have.

International Foot Versus US Survey Foot

This tool uses the international foot of 0.3048 m. The old US survey foot was 1200/3937 m, about 2 parts per million longer. NIST says the survey foot is obsolete from January 1, 2023, but older land records may still use it. Over 1,000,000 mm the two feet differ by about 0.0066 ft, or 2 mm.

Measurement Uncertainty

A reading of 2,000 mm might really be 1,999 mm. The conversion keeps whatever error the reading had.

The same length can be written three ways, and each suits a different job. This comparison uses 2,000 mm.

To turn a decimal inch value into a clean fraction yourself, the fraction calculator reduces and adds fractions.

Reading a Metric Plan with an Imperial Tape

Plans drawn in mm list walls, openings and heights as plain numbers such as 2,100 or 2,400. Convert each one and mark the feet, inches and fraction line.

Checking Sheet and Board Sizes

Metric sheet goods and imperial ones are close but not equal. 1,220 mm is 4 ft 0 1/32 in, about 0.8 mm more than 4 ft. Small gaps like this add up across a wall.

Height in Feet and Inches

A height listed as 1,750 mm is 5 ft 8 7/8 in at 1/16 precision. For heights given in centimeters, the centimeters to feet converter works from cm directly.

Common millimeter lengths in decimal feet and in feet, inches and the nearest 1/16 inch, with the error in mm. A plus error means the mark is longer than the metric length. Values are computed from 1 ft = 304.8 mm.

1. Reading Decimal Feet as Feet and Inches

6.56 ft is not 6 ft 5.6 in or 6 ft 56 in. The decimal part is a fraction of a foot: 0.56168 x 12 = 6.74 in.

2. Dividing by 300

Dividing by 300 makes every answer 1.6 percent too long. At 3,000 mm that gives 10 ft instead of 9.84 ft, about 1 7/8 in too much.

3. Dividing by 305

305 is closer, but still wrong. At 10,000 mm it gives 32.787 ft instead of 32.808 ft, a gap of about 6.6 mm.

4. Rounding Inches Before Building the Fraction

Rounding 78.74 in to 78.7 in first changes the nearest 1/16 from 3/4 to 11/16. Round once, at the end.

5. Using the Survey Foot by Mistake

Old survey records may use 1200/3937 m per foot. Mixing that with the 0.3048 m foot adds about 2 mm per kilometer.

The decimal feet result is exact to the digits shown, because the foot is defined as exactly 304.8 mm. The fraction is always rounded.

One foot is exactly 304.8 millimeters. That is 12 inches of 25.4 mm each.

One thousand millimeters is 3.28084 ft. As feet and inches that is 3 ft 3 3/8 in to the nearest sixteenth.

It is 7.87402 ft, or 7 ft 10 1/2 in to the nearest 1/16 in. The mark is 0.3 mm longer than 2,400 mm.

No. 300 mm is 0.98425 ft, about 4.8 mm short of a foot. As a tape reading it is 11 13/16 in.

One millimeter is 0.00328084 ft. That is 0.03937 in, a little more than 1/32 in.

Divide by 300 for a fast estimate. It reads 1.6 percent high, so 1,500 mm gives 5 ft against the true 4.92 ft.

A finer fraction has smaller steps, so the nearest mark moves closer to the true length. 1,800 mm is 5 ft 10 7/8 in at 1/16 and 5 ft 10 55/64 in at 1/64.

It is 5.74147 ft, which is 5 ft 8 7/8 in to the nearest sixteenth of an inch.

No. It uses the international foot of 0.3048 m. NIST retired the US survey foot at the end of 2022.

Yes. Switch the direction and type decimal feet. 8 ft becomes 2,438.4 mm exactly.

• Conversion factor for the foot (NIST SP 811, Appendix B.8).
• 1 foot = 0.304 8 meter exactly, and 12 inches = 1 foot (NIST Handbook 44, 2026, Appendix C).
• The international foot and the retired US survey foot (NIST Office of Weights and Measures).
• The foot as 1/3 of a yard of 0.9144 metre (Weights and Measures Act 1985, Schedule 1, legislation.gov.uk).