Free tools
Trading calculators & utilities
Client-side tools for Indian retail traders — instant results, mobile-friendly, no account required. Use them alongside AlgoCrab Bridge when you automate alerts.
12 tools
- Technical Analysis
Pivot Point Calculator
Standard, Fibonacci, Camarilla & Woodie pivot levels from High, Low, Close.
Open Tool - Technical Analysis
Fibonacci Retracement & Extension
Swing high/low to retracement and extension price levels with chart.
Open Tool - Technical Analysis
Gann Square of 9
Support and resistance levels from current price on a square grid.
Open Tool - Calculators
Position / Lot Size Calculator
Capital, risk %, entry & stop-loss → quantity and risk amount.
Open Tool - Calculators
Brokerage & Margin (India)
STT, stamp duty, exchange charges, GST & SEBI for equity and F&O.
Open Tool - Calculators
CAGR & SIP Calculator
Compound growth and systematic investment returns over time.
Open Tool - Market Data
NSE Market Holidays
Trading holidays calendar for the current year.
Open Tool - Market Data
F&O Lot Size List
Searchable NSE F&O lot sizes for stocks and indices.
Open Tool - Market Data
Economic Calendar
Key macro events and data releases affecting Indian markets.
Open Tool - Options
Options P&L Calculator
Strike, premium, lot size & expiry with payoff chart.
Open Tool - Options
Put-Call Ratio (PCR)
PCR from put and call open interest or volume.
Open Tool - Options
Max Pain Calculator
Estimate max pain strike from open interest by strike.
Open Tool
More calculators added weekly. Read algo trading guides