Funding Rate Calculator
See the cumulative funding fees paid or earned over any holding period for perpetual futures positions. Supports long and short on any position size.
How This Tool Works
Perpetual futures funding rates are periodic payments between long and short traders. When the rate is positive, longs pay shorts; when negative, shorts pay longs.
Funding Fee per interval = Position Size × Funding Rate %
Total = Fee per interval × (Days × 3 intervals/day)
Funding is typically charged 3 times per day (every 8 hours) on most major exchanges. The cumulative cost over weeks or months can be substantial for large positions.
Check funding rates before opening a position — sustained high rates (0.05%+ per 8h) make holding long positions expensive during highly bullish market conditions.
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