- Enter an observed current block height; the default is an example.
- Choose an assumed average number of minutes per block.
- Review next halving height, blocks remaining and estimated days.
Bitcoin halving calculator
Estimate blocks and time remaining to the next Bitcoin subsidy halving from a block height and average block interval you provide. Free, without registration.
Starting values are an example. Replace them with your own.
Next halving block1,050,000
Blocks remaining150,000
Estimated days1,041.66666667
Current subsidy, BTC3.125
Method and limitations
The subsidy halves every 210,000 blocks. Time is remaining blocks × your assumed block interval. The starting height is an example; enter an observed height for your estimate.
How to use this calculator
How the calculation works
The subsidy halves every 210,000 blocks. Time is remaining blocks × your assumed block interval. The starting height is an example; enter an observed height for your estimate.
How to read the result
The model uses a 210,000-block interval. Time is remaining blocks times your assumed block duration; it is not a live countdown. The displayed subsidy model excludes transaction fees and does not calculate mining profitability.
What you can do here
Change one input at a time and compare the result immediately. The calculation runs in your browser, with assumptions and limitations below the form. Default values are examples, not recommendations or live market data.
To compare a recurring investment contribution with income and payment dates, open the DCA budget planner.
Frequently asked questions
What does this calculator show?
Estimate blocks and time remaining to the next Bitcoin subsidy halving from a block height and average block interval you provide.
Why can the estimated halving date change?
The height and average interval are inputs. Actual blocks arrive at varying intervals, so an assumed constant interval cannot establish the exact date.
Does the displayed subsidy include all miner revenue?
No. It excludes transaction fees, pool distribution, operating costs and the miner’s share of blocks.
Do I need an account or payment to calculate?
No. All fields and results are free. You can change inputs and compare scenarios without an account. An account is only needed for synchronising a plan in the dashboard.