How do you calculate supplier capacity coverage?

Divide the supplier's committed capacity by your required demand and multiply by 100. With 1,200 units committed against 1,000 required: 1,200 / 1,000 x 100 = 120% coverage.

What does capacity coverage below 100% mean?

It means the supplier cannot fully meet your demand on their own, you'll need a second source, an expedite, or a demand adjustment to close the gap. Above 100% means they have headroom.

What is a good supplier capacity coverage percentage?

Aim for a cushion above 100%, often 110-130%, so the supplier can absorb demand spikes and their own downtime. The example's 120% gives a healthy 20% buffer over required volume.

Does 120% coverage mean I'm safe?

It means the committed number exceeds demand by 20%, but paper capacity isn't delivered capacity. Discount it for the supplier's typical yield loss and uptime before treating the buffer as real.

Should I dual-source below a certain coverage?

If a single supplier's coverage sits near or below 100% for a critical part, dual-sourcing is prudent. A thin or negative buffer leaves no room for their disruptions or your demand growth.

Capacity coverage vs. capacity utilization?

Coverage compares a supplier's committed output to your demand; utilization measures how much of their total capacity is already consumed by all customers. A supplier can show 120% coverage for you yet be running at 95% utilization overall, which erodes their flexibility.

Supply Chain & Procurement calculator

Supplier Capacity Coverage Calculator

Supplier capacity coverage is the ratio of a supplier's committed output to the demand you need them to fill, expressed as a percentage, anything below 100% means they can't fully cover your requirement. Sourcing managers and supply planners use it to spot capacity gaps before they become line-down shortages and to decide whether to dual-source. It matters because a supplier can quote an attractive price yet lack the throughput to meet your volume, and that shortfall surfaces at the worst possible time. This tool makes the gap visible in one number so you can act before the PO is placed.

What this calculator does

Calculate supplier capacity coverage for Supply Chain & Procurement, committed capacity against required demand.
Use it to flag supply gaps before they bite in Supply Chain & Procurement.
It divides supplier committed capacity by required demand and expresses the result as a percentage of demand covered.

Formula used

Capacity coverage = supplier committed capacity ÷ required demand × 100
Below 100% means the supplier cannot fully cover demand

Inputs explained

Supplier committed capacity:
Required demand:
Percentage conversion basis:

How to use the result

Use it during supplier selection, capacity planning for a volume ramp, or a risk review when demand is forecast to grow.
Committed capacity on paper isn't the same as reliable delivered output; a supplier at 120% coverage can still fall short if their yield, uptime, or upstream materials constrain actual production.

Current U.S. benchmarks

U.S. manufacturing runs at 75.7% of capacity (Federal Reserve, Aug 2026). New factory orders are up 8.5% year over year (Census).
USITC reported an average effective tariff statistic — a calculated-duty rate of 12.4% of covered customs value in 2025 across the 57 manufacturing import families MFG Calcs tracks, up from 3.3% the year before. This is a statistical aggregate, not verified cash paid or an entry-specific legal rate. Statutory and effective rates by family are at mfgcalcs.com/tariffs.
Sourcing currencies as of 2026-10-02 (Federal Reserve H.10): 6.7038 CNY and 18.192 MXN per USD. Landed-cost comparisons move with these daily rates.

Common questions

How do you calculate supplier capacity coverage? Divide the supplier's committed capacity by your required demand and multiply by 100. With 1,200 units committed against 1,000 required: 1,200 / 1,000 x 100 = 120% coverage.
What does capacity coverage below 100% mean? It means the supplier cannot fully meet your demand on their own, you'll need a second source, an expedite, or a demand adjustment to close the gap. Above 100% means they have headroom.
What is a good supplier capacity coverage percentage? Aim for a cushion above 100%, often 110-130%, so the supplier can absorb demand spikes and their own downtime. The example's 120% gives a healthy 20% buffer over required volume.
Does 120% coverage mean I'm safe? It means the committed number exceeds demand by 20%, but paper capacity isn't delivered capacity. Discount it for the supplier's typical yield loss and uptime before treating the buffer as real.
Should I dual-source below a certain coverage? If a single supplier's coverage sits near or below 100% for a critical part, dual-sourcing is prudent. A thin or negative buffer leaves no room for their disruptions or your demand growth.
Capacity coverage vs. capacity utilization? Coverage compares a supplier's committed output to your demand; utilization measures how much of their total capacity is already consumed by all customers. A supplier can show 120% coverage for you yet be running at 95% utilization overall, which erodes their flexibility.

Related guides

Last reviewed 2026-07-13.