NFT Floor Price Calculator

Live floor math - supply presets, implied market cap, a naive sweep ladder, and a list-premium ask so you plan against the cheapest listing without calling it fair value.

Floor is the lowest ask you paste from a live book. Depth, bait listings, fees, and royalties are out of scope - re-check the marketplace before you send.

By Ahmet C. Toplutaş·Site owner & editor · Blockchain & DeFi tools

Last updated May 21, 2026 · Reviewed May 21, 2026 · Planning estimates only - not tax, medical, or investment advice

Floor is an ask, not a valuation

Marketplace “floor” is the cheapest live listing - someone willing to sell at that price right now. It is not the median trade, not trait fair value, and not what you will receive after fees if you are the seller.

Thin books and bait listings make floor noisy: a single underpriced ask can pull the headline down until it fills or is cancelled. This page turns the number you paste into size math (implied mcap, sweep cost, list premium) so you can plan - then you still re-check the live book.

Decision framing: “What does this ask imply if I buy, sweep, or list above it?” - not “what is this NFT worth forever.”

Implied market cap = floor × supply

Multiplying floor by collection size is a headline comparison across projects (1k vs 10k vs 25k). It assumes every token could clear at today’s floor - which never happens in practice. Use it to sanity-check whether a “cheap floor” is cheap for that supply, not as cash you can exit into.

Supply presets (1k / 5k / 10k / 25k) set collection size quickly. Paste a custom supply when the collection is weird (888, 3333, etc.). Optional ETH→USD converts the same product for people who think in dollars - remember USD moves with ETH even if the ETH floor is flat.

Sweep ladder (naive depth)

Buying more than one NFT at “the floor” is almost never floor × N. The panel’s ladder shows 1 / 3 / 5 / 10 × floor as a lower bound so you see order-of-magnitude ETH before you open a sweep UI.

Real depth: the 5th cheapest ask is usually above floor. Always re-price on the live order book and add gas for each fill or batch path.

Listing above floor

Sellers often ask “floor + X%.” The panel’s list premium field shows that ask in ETH. It does not predict whether you fill. Rare traits, patience, and fee drag all matter - pair with the NFT royalty calculator for creator-fee impact on proceeds.

Worked scenarios

A · 10k PFP, 1.2 ETH floor. Implied mcap ≈ 12,000 ETH. Sweep of 5 at flat floor ≈ 6 ETH (naive). List at +10% → ask 1.32 ETH. Tap 10k supply, set floor 1.2, premium 10.

B · 1k curated, 0.4 ETH floor. Same ETH floor “feel” as a mid 10k can be a very different collection size: mcap ≈ 400 ETH. Use the 1k preset to avoid comparing apples to orchards.

C · Bait floor. One listing at 0.05 ETH under a 1.0 ETH cluster: headline floor collapses; implied mcap becomes meaningless until that ask fills or vanishes. Prefer last-sale bands when the book looks hollow.

Formula

Implied mcap = floor × supplySweep (naive) = floor × N · Ask = floor × (1 + premium%)

Floor here is the lowest listing you enter. “Median” marketplace widgets are a different statistic - this tool stays on lowest-ask math on purpose.

When not to use floor alone

Trait / rarity pricing - floor ignores attributes.
Illiquid books where one ask is a clear outlier.
Flip P/L after fees - use crypto P/L with real buy/sell prices.
Royalty strategy for creators - wrong tool; use the royalty calculator.

How to use this panel

Paste the lowest ask you trust from the live marketplace.
Pick a supply preset or type the exact collection size.
Read implied mcap and the sweep ladder before sizing a buy.
Set list premium if you are selling above floor; subtract fees/royalties offline.
Optional: set ETH USD for a dollar headline - refresh spot before you decide.

FAQ

Is floor price the fair value of an NFT?

No. Floor is the cheapest active ask on a marketplace - a listing, not an appraisal. Thin or bait listings can sit far below where real trades clear. Use last sales and depth, not floor alone, for a buy decision.

What does floor × supply (implied market cap) mean?

It is a quick upper-bound style headline: if every piece traded at today’s floor, what would the collection be worth in ETH. Real market cap is lower because not every token sells at floor and many never trade. Treat it as a size comparison across collections, not a cash value you can exit into.

Why is the sweep ladder only an estimate?

It multiplies floor × count. Real order books have depth: the 3rd or 10th cheapest ask is usually higher than the floor. Always re-check the live book before you send a sweep transaction.

Should I list exactly at floor?

Floor listings compete to be the cheapest ask. Listing a premium above floor (for example +10% or +25%) can make sense for rare traits or patience - but you may sit unsold while floor moves. The panel’s list-premium field shows the ETH ask; it does not predict fill probability.

Does this include marketplace fees or royalties?

No. Seller proceeds are floor (or your ask) minus marketplace fee and any royalty that still applies on that venue. Add those before you call a flip profitable. Pair this with the NFT royalty calculator for creator-side math.

Floor in ETH or USD?

Most NFT books quote in ETH (or a chain native). USD is a convenience conversion using a spot you enter. Floor can be stable in ETH while USD jumps with ETH price - know which unit your strategy cares about.

Sources

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Floor is an ask, not a valuation

Decision framing: “What does this ask imply if I buy, sweep, or list above it?” - not “what is this NFT worth forever.”

Implied market cap = floor × supply

Sweep ladder (naive depth)

Real depth: the 5th cheapest ask is usually above floor. Always re-price on the live order book and add gas for each fill or batch path.

Worked scenarios

A · 10k PFP, 1.2 ETH floor. Implied mcap ≈ 12,000 ETH. Sweep of 5 at flat floor ≈ 6 ETH (naive). List at +10% → ask 1.32 ETH. Tap 10k supply, set floor 1.2, premium 10.

B · 1k curated, 0.4 ETH floor. Same ETH floor “feel” as a mid 10k can be a very different collection size: mcap ≈ 400 ETH. Use the 1k preset to avoid comparing apples to orchards.

How to use this panel

Paste the lowest ask you trust from the live marketplace.
Pick a supply preset or type the exact collection size.
Read implied mcap and the sweep ladder before sizing a buy.
Set list premium if you are selling above floor; subtract fees/royalties offline.
Optional: set ETH USD for a dollar headline - refresh spot before you decide.

FAQ

Is floor price the fair value of an NFT?

What does floor × supply (implied market cap) mean?

Why is the sweep ladder only an estimate?

It multiplies floor × count. Real order books have depth: the 3rd or 10th cheapest ask is usually higher than the floor. Always re-check the live book before you send a sweep transaction.

Should I list exactly at floor?

Does this include marketplace fees or royalties?

Floor in ETH or USD?

Count

ETH if all @ floor

1 NFT

1.2 ETH

3 NFTs

3.6 ETH

5 NFTs

6 ETH

10 NFTs

12 ETH

NFT Floor Price Calculator

Floor is an ask, not a valuation

Implied market cap = floor × supply

Sweep ladder (naive depth)

Listing above floor

Worked scenarios

Formula

When not to use floor alone

How to use this panel

FAQ

Is floor price the fair value of an NFT?

What does floor × supply (implied market cap) mean?

Why is the sweep ladder only an estimate?

Should I list exactly at floor?

Does this include marketplace fees or royalties?

Floor in ETH or USD?

Sources

Floor is an ask, not a valuation

Implied market cap = floor × supply

Sweep ladder (naive depth)

Listing above floor

Worked scenarios

Formula

When not to use floor alone

How to use this panel

FAQ

Is floor price the fair value of an NFT?

What does floor × supply (implied market cap) mean?

Why is the sweep ladder only an estimate?

Should I list exactly at floor?

Does this include marketplace fees or royalties?

Floor in ETH or USD?

Sources

What this number means

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