Cable Size Chart – AWG ↔ mm² with Ampacity

This cable size chart converts AWG to mm² and gives conductor construction, cable outer diameter, conductor resistance and ampacity for the sizes we manufacture.

CE · ISO 9001 · Factory-direct · Custom lengths & OEM builds · Reply in 12 hours

View certificates

Get my quote in 12h — send your gauge and application.

Cable Size Chart: AWG to mm², Ampacity, Diameter & Resistance

AWG	mm² (standard conversion)	Conductor construction	Cable OD	Conductor resistance @20°C	Ampacity
10 AWG	6 mm²	84/0.3 mm solar	7.2 mm	3.39 Ω/km	70 A at 60°C
10 AWG	6 mm²	190/0.20 mm rubber battery	5.10 mm	3.14 Ω/km	Per request
2 AWG	≈33.6 mm² (35 mm² nominal)	2646/0.127 mm battery	12 mm	Per request	Per request
2/0 AWG	≈67.4 mm² (70 mm² nominal)	5292/0.127 mm battery	17 mm	Per request	Per request

Note: an exact conversion puts 2 AWG at 33.6 mm²; the market labels this size 32 mm² (welding) and 35 mm² (nominal), so confirm the construction against your order line.

Per request: 2 AWG and 2/0 AWG values are quoted against your installation conditions within 12 hours.

AWG → mm² conductor cross-section comparison

10 AWG (6 mm²), 2 AWG (33.6 mm²) and 2/0 AWG (67.4 mm²) — exact conversion

10 AWG / 6 mm²84/0.3 mm solar · OD 7.2 mm

6 mm²

2 AWG / 33.6 mm²2646/0.127 mm battery · OD 12 mm

33.6 mm² (5.6× 6mm²)

2/0 AWG / 67.4 mm²5292/0.127 mm battery · OD 17 mm

67.4 mm² (11.2× 6mm²)

Exact conversion shown — nominal market labels: 2 AWG ≈ 35 mm², 2/0 AWG ≈ 70 mm².
Source: KMCABLE cable size chart. Sizes shown are constructions we manufacture.
Chart data: exact AWG→mm² conversion; ampacity quoted per application conditions.

2 AWG measures 33.6 mm² — 5.6× the cross-section of 6mm² (10 AWG) — and 2/0 AWG measures 67.4 mm², exactly twice 2 AWG.

Figure — AWG ↔ mm² cross-section comparison for the sizes KMCABLE manufactures. Source: KMCABLE cable size chart.

Cables by Size

6mm Cable/10 awg Cable

2 AWG Cable

Cable outer diameter by size

Cable OD from our size chart — the four constructions listed for 10 AWG / 2 AWG / 2/0 AWG

10 AWG / 6 mm² — solar84/0.3 mm solar

7.2 mm

10 AWG / 6 mm² — rubber battery190/0.20 mm rubber battery

5.10 mm

2 AWG — battery2646/0.127 mm battery

12 mm

2/0 AWG — battery5292/0.127 mm battery

17 mm

Source: KMCABLE cable size chart — Cable OD column.
Values are the cable outer diameters we manufacture for these constructions.

Cable OD runs from 5.10 mm for the 6mm² rubber battery construction to 17 mm for 2/0 AWG battery cable — 2 AWG battery cable measures 12 mm and 6mm² solar cable 7.2 mm.

Figure — Cable outer diameter by size and construction. Source: KMCABLE cable size chart (Cable OD column).

Photos: Cables & Production

Pick Your Size

Already know your gauge? Go straight to the full spec sheet.

6mm² / 10 AWG — 84/0.3 mm solar (7.2 mm OD, 3.39 Ω/km, 70 A at 60°C), 190/0.20 mm rubber battery and 5-core EV charging: see 6mm² cable selection for ampacity and diameter by application.
2 AWG — 2646/0.127 mm battery cable (12 mm OD) and EPDM welding constructions: see 2 AWG cable selection for the spec breakdown.

Other Cable Sizes

Our battery cable range also covers 8, 6, 4, 1, 1/0, 3/0 and 4/0 AWG, and our solar and rubber ranges cover 1.5–120 mm². These sizes don't have a dedicated page yet — tell us your gauge and application and our engineers reply with matched specs within 12 hours. Related reading: 6 gauge wire, 1 2 4 AWG battery power cable, and 2 AWG vs 2/0 AWG cable for a side-by-side comparison.

Cable Size Guides

News

What Does “6mm” Mean in 6mm Cable Specifications?

Read article →

News

6 Gauge Wire

Read article →

News

Difference between 2 awg & 2/0 awg cable

Read article →

Cable Size FAQ

What is 6mm² in AWG?

6mm² equals 10 AWG. It's the same conductor cross-section expressed in two different standards — European metric (mm²) and American Wire Gauge — so a 6mm² cable and a 10 AWG cable are interchangeable by size.

What is 2 AWG in mm²?

2 AWG equals 33.6 mm² by exact conversion, commonly sold as 35 mm² nominal. Both figures describe the same wire; the difference is rounding convention, not a different product.

How do I choose the right cable size for my load?

Match your current draw and one-way cable length to the ampacity rating of the size you are considering, then confirm against your application's temperature rating. Solar, battery and welding cables carry different current at the same cross-section because insulation and construction differ — send us your load and length and we quote the exact size within 12 hours.

What is 2/0 AWG in mm²?

2/0 AWG equals approximately 67.4 mm², commonly sold as 70 mm² nominal — the next size up from 2 AWG (33.6 mm² exact) for runs where 2 AWG is marginal on voltage drop. Send us your load, run length and installation method and our engineers confirm the size within 12 hours.

Get a Factory-Direct Quote in 12 Hours

Send us your gauge, length and application and our cable team confirms the exact spec and price — or message us on WhatsApp for a faster reply.

Our cable team replies in 12 hours. What to send: cable size / gauge · conductor & insulation · run length · quantity · certification needed

WhatsApp our team

Get Professional Quote Now

Get Quotation by Upload Specification Sheet

Cable Size Chart – AWG ↔ mm² with Ampacity

Cable Size Chart: AWG to mm², Ampacity, Diameter & Resistance