What size should I get in New Balance FuelCell SuperComp MD-X v3?

Shoe Fit calculates your millimeter shoe cavity to recommend your exact size in the New Balance FuelCell SuperComp MD-X v3 by comparing against shoes you already own.

New BalanceUnisex

FuelCell SuperComp MD-X v3

Fit verdict, size conversion guide, and millimeter measurements.

Find Your Size

Fit Analysis & Sizing Advice

Order 1/2 Size Up

This shoe runs approximately 2.4mm shorter than standard sizing. If you are between sizes or prefer a relaxed fit, go a half size up.

Runs Small (–8mm)True to SizeRuns Large (+8mm)

Snug / 1 Size UpStandard fitRoomy / 1 Size Down

Width: Standard Width (Medium). Conforms to standard medium width.

Community Fit Consensus

Aggregated feedback from verified shoe owners

4.0

(38 ratings)

61% of wearers report this shoe fits True to Size.

Length Distribution

Runs Small34%

True to Size61%

Runs Large5%

Width Distribution

Runs Narrow10%

Standard Width80%

Runs Wide10%

Complete Size Chart

Showing 30 sizes

EU	US (M)	UK	Foot Length	Cavity Length
34	2.5	2	20.5 cm	218.6 mm
35	3	2.5	21.0 cm	223.6 mm
35.5	3.5	3	21.5 cm	228.6 mm
36	4	3.5	22.0 cm	233.6 mm
37	4.5	4	22.5 cm	238.6 mm
37.5	5	4.5	23.0 cm	243.6 mm
38	5.5	5	23.5 cm	248.6 mm
38.5	6	5.5	24.0 cm	253.6 mm
39.5	6.5	6	24.5 cm	258.6 mm
40	7	6.5	25.0 cm	263.6 mm
40.5	7.5	7	25.5 cm	268.6 mm
41.5	8	7.5	26.0 cm	273.6 mm
42	8.5	8	26.5 cm	278.6 mm
42.5	9	8.5	27.0 cm	283.6 mm
43	9.5	9	27.5 cm	288.6 mm
44	10	9.5	28.0 cm	293.6 mm
44.5	10.5	10	28.5 cm	298.6 mm
45	11	10.5	29.0 cm	303.6 mm
45.5	11.5	11	29.5 cm	308.6 mm
46.5	12	11.5	30.0 cm	313.6 mm
47	12.5	12	30.5 cm	318.6 mm
47.5	13	12.5	31.0 cm	323.6 mm
48.5	13.5	13	31.5 cm	328.6 mm
49	14	13.5	32.0 cm	333.6 mm
50	15	14.5	33.0 cm	343.6 mm
51	16	15.5	34.0 cm	353.6 mm
52	17	16.5	35.0 cm	363.6 mm
53	18	17.5	36.0 cm	373.6 mm
54	19	18.5	37.0 cm	383.6 mm
55	20	19.5	38.0 cm	393.6 mm

Frequently Asked Questions

Does the New Balance FuelCell SuperComp MD-X v3 run big or small?

It tends to run slightly small. We recommend going a half size up for the best fit. This shoe runs approximately 2.4mm shorter than standard sizing. If you are between sizes or prefer a relaxed fit, go a half size up.

How does Shoe Fit determine shoe sizing?

Shoe Fit calculates the real-world interior shoe cavity in millimeters combined with real owner feedback, rather than relying on arbitrary brand charts.

Find Your Exact Size

Already own a shoe that fits well? Shoe Fit cross-references its internal cavity against the New Balance FuelCell SuperComp MD-X v3 to give you your personalized size.

Instant recommendation

Accounts for width & stretch

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Model Details

BrandNew Balance

ModelFuelCell SuperComp MD-X v3

Gender SpecUnisex

Sizes Offered30 sizes

Community Rating4.0 ★ (38 votes)

Fit Data SourceCommunity Validated

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