Expert Reference

    Mattress Firmness Scale

    Firmness is rated on a 1–10 scale (1 = softest, 10 = firmest). Most mattresses fall between 4 and 8. Here's what each level actually feels like.

    The 1–10 Firmness Scale

    1 — Softest5 — Medium10 — Firmest
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10

    Most popular range: 5–7 (Medium to Firm). About 80% of mattresses sold fall in this range.

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    6Medium-Firm: 84 mattresses tested at this firmness. Showing top 9 by overall score.

    1–2

    Ultra Soft

    Maximum sink and hug. Extremely rare — most people find this uncomfortably soft. You'll feel like you're sleeping 'in' the mattress rather than 'on' it.

    Best for: Very few sleepers; those with specific medical needs

    3

    Soft

    Significant contouring and pressure relief. Deep body hug with noticeable sinkage. Great for lightweight side sleepers who want plush comfort.

    Best for: Side sleepers under 130 lbs

    4

    Medium-Soft

    Noticeable cushioning with some support. You'll feel cradled but not engulfed. The sweet spot for many side sleepers.

    Best for: Side sleepers 130–200 lbs

    5

    Medium

    The universal comfort zone. Balanced pressure relief and support. Works for most body types and sleep positions. The most popular firmness level.

    Best for: Combination sleepers, most body types

    6

    Medium-Firm

    Slight cushion on top with strong underlying support. You'll feel 'on top' of the mattress with gentle contouring. The second most popular firmness.

    Best for: Back sleepers, combination sleepers 150–230 lbs

    7

    Firm

    Minimal sinkage with a flat, supportive surface. Keeps heavier sleepers on top of the mattress with proper alignment.

    Best for: Back & stomach sleepers, heavier sleepers (200+ lbs)

    8

    Extra Firm

    Very little give. Feels like sleeping on a hard surface with a thin comfort layer. Preferred by strict stomach sleepers and some back pain sufferers.

    Best for: Stomach sleepers, heavier sleepers who need maximum support

    9–10

    Ultra Firm

    Extremely hard surface with almost no conforming. Rare in consumer mattresses — closer to a floor or tatami mat feel.

    Best for: Specific medical recommendations only

    Firmness by Sleep Position & Weight

    Sleep Position<130 lbs130–230 lbs>230 lbs
    Side3–44–65–7
    Back4–55–76–8
    Stomach5–66–77–8
    Combination4–55–66–7

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