Free tools. No signup.

Quick math for the questions you actually have. Share results via URL.

Available now

Example
$500/yr reinvested at 3%
+$3,435
over 20 yrs
DRIP / Dividend Reinvestment Calculator
Project the long-run effect of reinvesting your dividends.
Open
Example
Buy $105 call @ $2.00
Max loss −$200.00
breakeven $107
Options Profit Calculator
Payoff at expiry for long calls, long puts, and vertical spreads.
Open
Example
$10,000 at 8%/yr
$46,610
in 20 yrs
Compound Interest Calculator
How much will a recurring investment grow over time?
Open
Example
$10,000 · 2% risk · $1.50 stop
133 shares
$200 at risk
Position Sizing Calculator
How many shares should you buy given your risk per trade?
Open

Coming soon

Sharpe Ratio Calculator
Maximum Drawdown Estimator
Annualized Return Calculator
Tax-Loss Harvesting Estimator
Dollar-Cost Averaging Projector
Stock vs. ETF Comparator
Beta-Adjusted Hedge Sizer
Implied Move Calculator
Risk Parity Allocator
Black-Scholes Pricer