Trader's Calculators

Position size · R/R ratio · Compound interest. Open formulas, no registration, no limits. Use in your browser or embed in your Sheets via our Apps Script add-on.

1. Position Size

How much USDT to invest so that when a Stop Loss is triggered, you lose no more than the specified % of your capital.

Entire trading account
1% — standard. 2% — aggressive. >5% — risky
Position Size
—
If SL is triggered, you will lose
—
risk_usd = equity × risk_pct / 100
price_diff = abs(entry − sl)
position_size_usdt = risk_usd × entry / price_diff

2. Risk / Reward (R/R)

The ratio of potential profit to potential loss. A strategy with R/R=2 is breakeven at WR=33%, R/R=3 at WR=25%.

R / R
—
Minimum WR for breakeven
—
R = abs(entry − sl) (risk)
reward = abs(tp − entry) (reward)
R/R = reward / R
breakeven_wr = 1 / (1 + R/R)

3. Compound Interest with Reinvestment

What a stable return of X% per month with full reinvestment will lead to after N months.

3% / month = ~42% per year with reinvestment
DCA on top
Capital at the end of the period
—
Net Profit
—
capital(t+1) = capital(t) × (1 + rate) + dca
The formula is used in each cycle t = 1..N months
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