Forex Compounding Calculator
Project how a starting balance would grow at a constant daily percentage, with the implied annual rate. A cautionary illustration, not trading advice.
Results · USD
Future value
- Interest / gain
- $161.40
- Implied annual (365d)
- 517.47%
If that daily rate persisted a full year
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Educational estimates · not financial advice · free, no signup
How this was calculated
FV = P × (1 + r_daily)^days. Effective annual ≈ (1 + r_daily)^365 − 1. High daily % implies extreme risk — educational only.
Want more detail? Full formula notes & FAQs ↓
Detailed guide
What it is, how to use it, how to read the numbers, common mistakes, a worked example, formulas, and FAQs.
What this calculator is
Social media is full of screenshots showing small daily gains compounding into huge balances. This calculator does the same arithmetic so you can see what such a claim implies: a starting amount, a constant daily percentage and a number of days produce a future value, and the same daily rate is then expressed as an annual rate. The point is understanding, not forecasting. A steady 0.5% per day looks modest but implies more than 500% per year, which no reliable strategy sustains. Real trading results are uneven, include losing days and drawdowns, and carry costs and risk of loss. Treat this as a way to test the plausibility of claims, never as a projection.
When to use / who it helps
- You see a claim about a daily percentage return and want to know what it implies over a month or year.
- You want to understand how compounding amplifies small daily changes.
- You are teaching or learning the effect of compounding frequency.
- You want the implied annual rate of a daily figure.
- You are checking whether a promised return is realistic.
How to use
Steps
- Enter the starting capital.
- Enter the daily rate as a percentage; 0.5 means 0.5% per day.
- Enter the number of days.
- Read the future value and the gain.
- Read the implied annual rate to judge plausibility.
- Try lower daily rates and see how quickly the figure falls.
How to interpret results
- Compounding multiplies the balance by the same factor each day, so growth accelerates over time.
- The implied annual rate is the result of compounding the same daily rate for 365 days, which shows how extreme the claim is.
- A very high implied annual rate is a red flag, not an opportunity.
- The calculation ignores losses, spreads, commissions, taxes and leverage costs.
- Real returns are volatile; the same average can hide large drawdowns.
Common mistakes & gotchas
- Treating a best-case sequence of gains as a forecast.
- Entering an annual rate in the daily field.
- Ignoring that a single large loss can erase many small gains.
- Forgetting costs such as spreads and swaps.
- Relying on screenshots of short winning streaks.
Worked example
Worked example — $1,000 at 0.5% per day for 30 days
- Daily growth factor: 1 + 0.005 = 1.005.
- After 30 days: 1,000 × 1.005^30 ≈ 1,000 × 1.1614 = $1,161.40.
- Gain: $161.40, or 16.1% in a month.
- Implied annual rate: 1.005^365 − 1 ≈ 5.17, which is about 517% a year.
Result: $1,161.40 after 30 days, and an implied 517% a year, a level that is not sustainable in practice.
To load the form's own demo values, tap Try example above the Calculate button.
How to calculate / formula
FV = P × (1 + r_daily)^days. Effective annual ≈ (1 + r_daily)^365 − 1. High daily % implies extreme risk — educational only.
Frequently asked questions
Is a 0.5% daily return realistic?
It is not sustainable. Compounded over a year it implies about 517%, far beyond what diversified investing has historically delivered.
Can forex trading produce steady daily gains?
Results vary widely and many retail traders lose money. This tool does not predict outcomes.
Why is the annual rate so high?
A daily gain compounds 365 times a year, so even a small rate produces a very large annual figure.
Does this include fees and losses?
No. It assumes the same gain every day with no costs.
How do I convert an annual rate to a daily rate?
Take the 365th root of one plus the annual rate and subtract one.
Is this financial advice?
No. It is an arithmetic illustration only, and trading carries a risk of loss.