InstantQR
⛽ Live ETH gas • ⚡ Fast UI • 🔒 Browser-side calculations

Gas Tracker

Track Ethereum gas fee suggestions using live RPC data. View base fee, priority fee, and estimated ETH cost for common transaction speeds and gas limits.

Base Fee
—
Base fee from the latest block fee history.
Priority Fee
—
Estimated validator tip suggestion.
Fast Max Fee
—
Suggested fast max fee per gas.
Mode
Ready
Shows the latest fetch state.
Gas Inputs
Choose a gas limit and refresh live gas fee suggestions.
Ready
Live result
Updates when you refresh gas data
Click Refresh Gas to load live fee suggestions.
Formula: estimated ETH cost = max fee per gas × gas limit

Current Gas Price

—
Legacy gas price estimate from the RPC.

Recommended Tip

—
Priority fee estimate used in suggestions.

Latest Block

—
Most recent block used for gas estimation.

Last Updated

—
Time of the latest successful refresh.

Slow

Max Fee
—
Estimated ETH Cost
—

Normal

Max Fee
—
Estimated ETH Cost
—

Fast

Max Fee
—
Estimated ETH Cost
—
This version uses multiple public RPC fallbacks and request timeouts to reduce failed refreshes in the browser.

Useful for fee planning

Use this tool before transfers, swaps, or contract calls to estimate whether current gas conditions fit your budget.

EIP-1559 aware

This tracker combines latest base fee data with a priority fee estimate to produce slow, normal, and fast max fee suggestions.

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FAQ

What does this gas tracker show?

This tool shows the current base fee, a priority fee estimate, suggested max fees for slow, normal, and fast settings, and estimated total transaction cost.

Does this tool estimate total ETH cost?

Yes. You can enter a gas limit and the tool estimates the ETH cost for each gas speed tier.

Does this tool run mostly in the browser?

Yes. The interface and calculations run in your browser while live gas data is requested from an Ethereum RPC endpoint.