Funding Rate Calculator
Use our crypto funding rate calculator to estimate how much you’ll pay or earn in funding fees when holding long or short positions on leveraged exchanges. Whether you’re trading Bitcoin, Ethereum, or altcoins on BYDFi, Phemex, or other futures platforms, this tool helps you understand the cost or reward of your position based on the funding rate, position size, and holding period. It supports both positive and negative funding rates, so you can accurately see when you’ll receive a credit instead of paying a fee. Perfect for day traders, swing traders, and anyone active in crypto futures.
Funding Fee Per Interval:
Total Paid Over Time:
How to use the calculator:
- Add you position size ($) – Enter your trade size (e.g., 5000).
- Add funding rate (%) – Enter the rate per interval (e.g., 0.01 or -0.02).
- Select holding period (hours) – How long you plan to keep the position.
- Click calculate – Get your fee per interval and total funding cost (or credit).
Crypto funding rate calculator explained
A crypto funding rate calculator is a tool designed to help traders estimate how much they’ll pay or receive in funding fees when holding leveraged positions in perpetual futures. Instead of manually crunching numbers, the calculator automatically determines your expected cost or credit based on the funding rate, your position size, leverage, and how long you plan to hold the position.
This is especially useful for traders using platforms like BYDFi, Phemex, or BTCC, where funding fees are applied regularly throughout the day. By knowing your estimated funding costs in advance, you can better plan your strategy and avoid unexpected losses over time.
While the funding rate itself is a mechanism that keeps futures prices aligned with spot prices, the calculator simplifies how that rate will actually impact your trade. Just plug in your values, and the tool shows you your per-interval fee and total cost, making it easier to trade with clarity.
What is a funding rate in crypto trading?
If you’re trading perpetual futures, you’ve probably come across the term funding rate. It might sound complex at first, but it’s actually pretty straightforward once you understand what it does.
In short, a funding rate is a small recurring fee exchanged between long and short traders to keep the price of the perpetual contract in line with the spot price of the asset. This fee is paid every few hours, usually every 8 hours, depending on the exchange.
When I first got into trading crypto futures, the term funding rate kept popping up, but I had no idea what it actually meant. Turns out, it’s one of those things you really should understand if you're holding positions for more than a few hours.
The funding rate is basically a fee (or credit) exchanged between long and short traders to keep the perpetual contract price close to the spot price. If too many people are long, they pay shorts. If the market leans short, then shorts pay longs. The cool part? It’s not a fee paid to the exchange—it's peer-to-peer.
It’s calculated and paid out every few hours, and the rate changes all the time. I’ve been in trades where I didn’t factor it in and ended up losing more in funding than I made on price movement; lesson learned.
How to calculate funding fees (with examples)
Funding fees in crypto trading are pretty simple once you break them down. The basic formula most platforms use is:
Funding Fee = Position Size × Funding Rate
The rate is usually charged every 8 hours, though some exchanges let you choose different intervals. If the rate is negative, you actually earn a funding credit instead of paying.
Let’s walk through a quick example.
Say you’re trading with a $10,000 position and the funding rate is 0.01% per interval (which is common). The fee is:
$10,000 × 0.0001 = $1 per interval
If you hold for 24 hours and funding happens every 8 hours, that’s three intervals:
$1 × 3 = $3 total paid
Now let’s flip it. Say the funding rate is -0.02%. You’d earn:
$10,000 × -0.0002 = -$2 per interval, or -$6 total after 24 hours.
It’s a small fee, but it adds up, especially on high leverage. That’s why having a funding fee calculator like this can make a big difference.
If you have difficulties calculating the perfect leverage ratio, use our crypto leverage calculator to get a quick answer.
How this funding fee calculator works
This funding rate calculator helps you estimate how much you’ll pay—or receive—in funding fees when holding a cryptocurrency position over time. It’s built to be easy to use but follows the same calculation logic used by major exchanges like BYDFi and BTCC.
Funding fees are based on three key inputs: your position size, the funding rate per interval, and how long you hold the trade (measured in funding intervals). The calculator multiplies these values to give you two helpful outputs: the funding fee per interval, and the total funding cost (or credit) over your entire holding period.
It works for both long and short positions and allows for negative funding rates, which means you could be paid instead of charged, depending on market conditions.
This calculator is especially useful for traders who want to factor in recurring costs or potential credits before entering or exiting a position. It gives you a quick and reliable way to understand the cost of holding a position over time, without doing the math yourself.
Calculation formula
The formula this funding fee calculator uses is straightforward:
Funding Fee = Position Size × Funding Rate × Number of Intervals
Here’s what each part means:
- Position Size – The total value of your trade in USD.
- Funding Rate – The rate charged or credited per interval, usually expressed as a percentage (e.g., 0.01% or -0.01%).
- Number of Intervals – The total number of funding intervals you hold the position for. Most exchanges apply funding every 8 hours, which means 3 intervals per day.
Who should use a funding rate calculator?
A funding rate calculator is useful for anyone trading perpetual futures contracts in crypto. If you’re holding a long or short position overnight—or even for just a few hours—you’ll likely be affected by funding fees. This tool is especially helpful for day traders, swing traders, and anyone planning to hold positions through multiple funding intervals.
Understanding how much you’ll pay (or earn) in funding can impact your trade strategy and overall profitability. If you're trading on exchanges that offer perpetuals, where funding fees change frequently, this calculator helps you avoid surprises.
It's also great for beginners who want to get a better grasp on how funding rates work in real-world scenarios. Instead of guessing how much it might cost to hold a position, this tool shows you the actual dollar amount based on your inputs, so you can make smarter, more informed decisions.
FAQ
Most exchanges charge funding every 8 hours, though some do it hourly or once daily. If you’re holding a position during that time, the fee applies.
Funding rates go negative when more traders are shorting the market. To balance the system, shorts then pay longs. It’s a way of incentivizing the opposite side.
Yes, if the rate is negative and you’re long, you’ll receive funding. Some traders build strategies around this, but the profits are usually small unless you’re using large positions.
No. You’re only charged if your position is still open at the exact funding timestamp. Closing before that avoids the fee.