Gas Fee Market 2D: EIP-1559 Priority Queue

Network Conditions

Network demand 50%

Blocks per second 1.0×

Your Wallet Transaction

Max fee cap 40 gwei

Priority tip 2 gwei

No transaction submitted yet.

Live Market State

Base fee

20.0 gwei

Last block fullness

Mempool pending

0 txs

Blocks mined

How it works

This models Ethereum's EIP-1559 fee market — the exact mechanism every mobile wallet (MetaMask, Trust, Rainbow…) reads from when it shows you a "gas fee" estimate before you sign a transaction. This 2D view renders it as a fee chart, a live priority queue and a block-fullness strip instead of a 3D scene.

effectiveTip  = min(priorityTip, maxFee − baseFee)   [only if maxFee ≥ baseFee]
gasUsed       = Σ gas of transactions included, highest effectiveTip first,
                until the 30M gas block limit is reached
baseFee(n+1)  = baseFee(n) × (1 + ⅛ × (gasUsed − gasTarget) / gasTarget)
gasTarget     = gasLimit / 2  (blocks aim to run half full on average)

Top chart — base fee over the last blocks. Watch it compound upward under sustained demand and decay back down when demand drops, each step capped at ±12.5%.
Middle queue — every pending transaction as a horizontal bar, ranked top-to-bottom by effective tip (what actually gets you included first). Bar length is the effective tip; bar color runs blue (low) to red (high) competitiveness.
Bottom strip — one bar per mined block, scrolling right to left. Height is how full the block ran; green means under target (fee will fall), red means over target (fee will rise).
The base fee itself is burned, not paid to anyone — only the tip is a reward, which is why bidding a tip above the going rate (not an unlimited max fee) is what actually buys faster inclusion.

base fee: 20.0 gwei

Your transaction High tip (wins block) Low tip (waits)