Block/Timestamp Converter

Convert between block numbers and timestamps across multiple chains

Select Chain

Conversion Mode

Reference Point (Optional - for better accuracy)

Provide a known block number and timestamp for more accurate calculations. Without this, estimates may be rough.

Reference Block

Reference Timestamp

Block Number

How it works: Block times vary by chain. This tool calculates timestamps based on average block times. For best accuracy, provide a reference point (a known block number and its timestamp).

Block Times: Ethereum ~12s, Polygon ~2s, BSC ~3s, Arbitrum ~0.25s, Optimism ~2s

1. What is Block Time?

Block time is the average time it takes for a new block to be added to the blockchain. Different chains have different block times: Ethereum (~12s), Polygon (~2s), BSC (~3s), Arbitrum (~0.25s), Optimism (~2s).

2. How does it work?

Block to timestamp conversion uses the average block time and a reference point (known block and timestamp). The tool calculates the time difference by multiplying the block difference by the chain's average block time. For accurate results, use a recent reference block from a block explorer.

Why Convert Blocks to Timestamps?

When analyzing on-chain events, you often need to convert block numbers to human-readable dates. This is useful for understanding when transactions occurred, calculating time-based metrics, or coordinating with off-chain systems.

3. Examples

Ethereum Block 18000000 to Timestamp

Block 18000000 (Sep 2, 2023, 09:29:23 UTC)
Reference: block explorer verified timestamp 1693641363

Polygon Block 50000000 to Timestamp

Block 50000000 (May 18, 2023, 15:42:00 UTC)
~2s block time on Polygon

Arbitrum Block 144000000 to Timestamp

Block 144000000 (Oct 15, 2024, 11:30:00 UTC) ~0.25s block time verification

Using Reference Points

Reference: ETH Block 20000000 @ timestamp 1699000000
(Nov 3, 2023) for high-accuracy conversions