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Rebar Calculator

T25 Reinforcing Bar

Eurocode metric reinforcing bar — diameter 25.0 mm (0.984 in), cross-sectional area, mass per metre, and standard spacing options.

Diameter
25.0 mm
Area
490.9 mm²
Perimeter
78.5 mm
Mass per metre
3.853 kg/m

Area per metre width at common spacings

For slab or wall reinforcement specified as “T25@ spacing c/c” — the area provided per unit width at each standard centre-to-centre spacing.

SpacingAs (mm²/m)
T25 @ 100mm c/c4909
T25 @ 125mm c/c3927
T25 @ 150mm c/c3272
T25 @ 175mm c/c2805
T25 @ 200mm c/c2454
T25 @ 250mm c/c1963
T25 @ 300mm c/c1636

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 T25.

BarAs (mm²/m)
T6188
T8335
T10524
T12754
T141026
T161340
T202094
T25 (this bar)3272
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 T25 in the Rebar Calculator →