Use our funding rate calculator to instantly estimate how much you’ll pay or receive in funding fees when trading crypto futures. This tool helps you calculate funding fees with precision, based on your position size, leverage, holding time, and the current funding rate.
What is a funding rate calculator?
A funding rate calculator is a tool that helps traders estimate the cost or income from holding a leveraged position in crypto futures. It shows whether you’ll pay or receive funding based on the current funding rate, your position size, leverage, and holding time.
In crypto futures trading, funding fees are periodic payments exchanged between long and short traders to keep the contract price aligned with the spot market. These small fees can add up over time, especially with high leverage or long holding periods, so it’s essential to know your numbers before opening a position.
Using a funding fee calculator, you can instantly see how much you’ll pay per interval, per day, and as a percentage of your margin. It also shows your break-even price movement and market bias, helping you decide whether the trade is worth the risk.
If you’re trading futures on platforms like BYDFi or BTCC, this calculator gives you a real edge by turning raw data into insight, so you don’t trade blind.
If you are still in the process of choosing a platform, check out our recent best crypto futures trading platform comparison, which also includes exchanges that are available to U.S. traders.
How do you calculate funding fees?
To calculate funding fees in crypto futures trading, you multiply your position size by the funding rate and adjust it based on how often the fee is charged. The basic formula is:
Funding Fee = Position Size × Funding Rate × Number of Intervals
Let’s say you’re trading a $10,000 Bitcoin position with a 0.01% funding rate charged every 8 hours. That’s 3 intervals per day. You’d pay:
$10,000 × 0.0001 × 3 = $3 per day
If you hold the position for 7 days, your total funding fee would be $21.
It’s also important to factor in your leverage. In the context of futures trading leverage, using borrowed capital increases your position size while reducing the margin at risk, making funding fees a larger percentage of your capital. This is why the funding fee calculator includes a “Funding % of Margin” metric, to show how impactful fees really are relative to your actual risk.
The type of futures contract also matters. Coin-M futures are settled in cryptocurrency (e.g., BTC or ETH), which means funding fees are paid or received in the coin itself rather than in stablecoins, adding another layer of volatility.
Manually calculating funding fees can be slow and error-prone. That’s why most traders use a funding rate calculator, it does the math instantly and lets you adjust for holding time, funding intervals, and market direction.
For those who want more info about their crypto futures positions, with our crypto futures calculator you can add inputs such as entry price, exit price, leverage, position size, and account balance to get a complete risk overview of your next trade.
How does the calculator work?
The funding rate calculator works by instantly computing your estimated funding fees or income based on your trade settings. You simply enter your position size, leverage, funding rate, direction (long or short), funding interval, and holding time.
Behind the scenes, the funding fee calculator uses this formula:
Funding Fee = Position Size × Funding Rate × Number of Intervals
It then compares your fee against your margin (the capital at risk), showing you how significant the funding cost is in percentage terms. You’ll also see your funding per interval, daily funding total, break-even move, and market bias, key metrics that help you understand how fees impact profitability.
If the funding rate is positive, longs pay shorts. If it’s negative, shorts pay longs. Based on this, the calculator tells you whether you're expected to pay or receive funding, and colors the results accordingly (red for paying, blue for receiving).
This makes it easy to assess the true cost of holding a leveraged futures trade over time, before you enter the position.
If you want to nail your position size before using this calculator, try using our crypto position size calculator for an instant measure.
Who is the funding rate calculator for?
This calculator is built for crypto futures traders who want clarity on the hidden cost (or benefit) of holding leveraged positions. Whether you're a beginner learning about perpetual futures or a semi-pro trader fine-tuning your strategy, this tool helps you make informed decisions.
If you’re trading on platforms like Binance, Bybit, or MEXC, you’re likely using USDT-M futures, which are settled in stablecoins and follow a fixed funding schedule, often every 8 hours. This calculator is especially useful if you’re:
- Swing trading with leverage and holding overnight
- Scalping but want to know your daily cost exposure
- Trading large size where fees can add up fast
- Comparing long vs. short strategies based on funding
- Looking for edge by farming positive funding income
By using the funding fee calculator before opening a position, you avoid surprises and gain a clearer picture of your real risk/reward. It’s a must-have tool if you take your crypto trading seriously.
What are the benefits?
The funding rate calculator gives you a strategic edge by exposing the true cost of leveraged trading, or potential income, of your leveraged positions. Instead of guessing how much funding you'll pay or receive, you can instantly calculate your daily, per-interval, and total funding based on real inputs like leverage, position size, and holding time.
Here’s what you gain:
- Clear cost forecasts – Know exactly how much funding you'll owe or earn over time
- Smarter trade planning – Align your entries and exits with funding cycles to minimize costs
- Risk-to-reward optimization – Compare potential profits with funding expenses before entering a trade. If you want to nail your risk-reward ratio, I suggest trying out our risk-reward ratio calculator.
- Strategy validation – Test long vs. short scenarios to see which side of the market offers a better fee setup
- Break-even insight – Learn how much the asset must move to cover your funding costs
In short, this tool helps you trade with intent, not hope, by making the hidden math behind crypto futures transparent and actionable.
Example calculations
Let’s walk through two example calculations to show how funding fees can impact your crypto futures trade.
Example 1: Funding Fee to Pay
- Position Size: $10,000
- Leverage: 20x
- Funding Rate: +0.01%
- Direction: Long
- Interval: Every 8 hours (3/day)
- Holding Time: 5 days
In this case, you’ll pay $150 in total funding over 5 days. That’s $10 per interval, $30 per day, and it eats up 7.5% of your margin.
Example 2: Funding Fee to Receive
- Position Size: $15,000
- Leverage: 30x
- Funding Rate: -0.015%
- Direction: Short
- Interval: Once per day
- Holding Time: 10 days
Here, you’ll receive $225 in total funding, passive income for holding the position. That’s $22.50 per day, giving you a nice buffer against small drawdowns.
These examples show how funding can either cost you or reward you. Run your own numbers above to see how it plays out for your trade setup.
If you are looking for a quick way to analyze your profitability, I suggest testing our crypto profit calculator for an instant result.
Calculation formula
Here’s the exact formula our funding fee calculator uses to determine your costs or income:
Funding Fee per Interval:
Funding Fee = Position Size × Funding Rate
This gives you how much you pay or receive each time funding is charged (e.g. every 8 hours or every hour, depending on the exchange).
Total Funding Fee:
Total Fee = Funding Fee × Intervals per Day × Holding Days
This gives you the total amount paid or earned over the entire time you hold the position.
Funding as % of Margin:
Funding % = (Total Funding / Margin Used) × 100
This tells you how significant the funding impact is on your capital. Margin is calculated as:
Margin Used = Position Size / Leverage
Tip: If the funding rate is positive, longs pay shorts. If it’s negative, shorts pay longs. The calculator automatically adjusts based on your direction.
Use the calculator above to run this math instantly, no spreadsheets needed.
FAQ
A funding rate is a periodic fee paid between long and short traders to keep the futures price aligned with the spot market.
Multiply your position size by the funding rate, then multiply that by the number of intervals per day and the holding time in days.
No, it varies by exchange. Some use 8-hour intervals, others charge hourly or daily.
It means short traders are paying long traders, indicating bearish sentiment in the market.
They can reduce profits or add costs if you're holding leveraged positions over time.
Yes, as long as you know the funding rate, position size, and holding time, it works across all platforms.