If you need to know when a specific Bitcoin block was mined - or, conversely, which block a specific moment falls in - you’re in the right place.
This is a surprisingly common task. Wallets sometimes display block heights instead of timestamps. Chain analysis might require the block for a specific date. Or maybe you’re projecting how large the chain will be at some point in the future. This tool gives you a straightforward way to do those conversions:
⏱️ Block Time Calculator
How it works
Bitcoin targets one block every ten minutes, but the rhythm drifts as the network’s hashrate rises and falls.
For past blocks, the calculator reads from the canonical chain: the miner-set timestamp and the block height. Keep in mind that miners choose the timestamp (within consensus rules), so it can be a little off. My tool shows the exact value recorded in the block header.
For future dates or heights, the output is an estimate. It assumes average network conditions and uses simple linear projections based on the ten-minute target. Treat it as an approximation.
Whether you’re digging through history or just curious about how block timing works, this gives you a quick way to move between time and block height. Enjoy.