CalculatorsPro ToolsLearnAboutHire MeSign InGo Pro
Rebar Calculator

T20 Reinforcing Bar

Eurocode metric reinforcing bar — diameter 20.0 mm (0.787 in), cross-sectional area, mass per metre, and standard spacing options.

Diameter
20.0 mm
Area
314.2 mm²
Perimeter
62.8 mm
Mass per metre
2.466 kg/m

Area per metre width at common spacings

For slab or wall reinforcement specified as “T20@ spacing c/c” — the area provided per unit width at each standard centre-to-centre spacing.

SpacingAs (mm²/m)
T20 @ 100mm c/c3142
T20 @ 125mm c/c2513
T20 @ 150mm c/c2094
T20 @ 175mm c/c1795
T20 @ 200mm c/c1571
T20 @ 250mm c/c1257
T20 @ 300mm c/c1047

Equivalent options at 150mm spacing

Every metric bar size at the same reference spacing, so you can see at a glance which other size lands near the same area per unit width as T20.

BarAs (mm²/m)
T6188
T8335
T10524
T12754
T141026
T161340
T20 (this bar)2094
T253272
T284105
T325362
T408378
T5013090

Area and mass are computed directly from the nominal diameter (mass assumes standard steel density, 7850 kg/m³) — the same values the Rebar Calculator uses.

Open T20 in the Rebar Calculator →