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Home/Features/Utilities & Tools/Position Size Calculator
Utilities & Tools

Position Size Calculator

Never risk too much on a single trade. Calculate your exact position size in seconds.

The Problem

You're about to enter a BANKNIFTY trade but don't know how many lots to buy. Too few and you're not utilizing capital efficiently. Too many and you're risking your entire account on one trade. Most traders skip this calculation — and pay for it.

How ArthaLearn Solves It

  • ✓Input: account size, risk percentage, entry price, stop loss price
  • ✓Output: number of shares/lots, total position value, maximum loss amount
  • ✓F&O support with NIFTY, BANKNIFTY, and FINNIFTY lot sizes
  • ✓Account for brokerage and charges in position sizing
  • ✓Multiple risk levels: conservative (1%), moderate (2%), aggressive (3%)
  • ✓Save your default settings for quick calculations

Frequently Asked Questions

How does position sizing work?▼
Position sizing determines how many shares/lots to buy based on three inputs: your account size, the percentage you're willing to risk (e.g., 2%), and the distance between your entry price and stop loss. The calculator ensures your maximum loss on any trade stays within your risk limit.
Is this calculator free?▼
Yes, the position size calculator is completely free to use. No signup required. You can access it anytime at arthalearn.com/resources/calculators/position-size-calculator.

Try Position Size Calculator Today

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