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Spring Gauge (Wire Gauge)

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In short

Spring gauge means the thickness of the wire in a mattress spring. Thicker wire usually holds more load and feels firmer. Coil size and shape also change how a spring contours. Mini springs in comfort layers can use thin wire and still raise the headline spring count. Read gauge, coil type and where the springs sit.

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Many bed words describe fabric, shape or storage — this is how they look in a room.

Definition. Spring gauge is the thickness of the steel wire used to make mattress springs. Thicker wire usually holds more load and feels firmer.

Gauge is one of the main inputs to spring tension. Shops may describe it in millimetres or with a gauge number, so ask which system they use.

Compare gauge only between springs of the same type. A thin-wire mini spring in a top layer is not the support unit underneath.

Full guide: wire gauge, coil types and microcoils.