The profit/loss calculator estimates outcome for defined entry, exit, side, and size on USD-quoted pairs using a simplified tick model. It is strongest for comparing scenarios (“exit A vs B”) rather than predicting the next fill.
Inputs that commonly move results
- Position size in base coins (or model equivalent)
- Tick decimals / minimum step assumed for the pair
- Whether you are long or short the quote move
Why live fills differ
Spread, fees, funding, partial fills, and latency change realized P&L versus a mid-price classroom model. For important size, reconcile once against a small live or demo ticket.
Use MyCryptoCal’s P/L tool alongside platform history when reviewing trades.
Scenario grids beat single-point guesses
P/L calculators shine when you compare a small grid: exit A vs exit B vs exit C at the same size. That habit trains distributions, not a single magical take-profit.
Cross-checking with platform history
Export a closed trade and rebuild it in the calculator. If numbers disagree, investigate fees, contract mode, funding rows, and timestamps—not “the math is wrong” by default.
- Screenshot ticket details for large trades.
- Mark whether exit was market or limit.
- Note macro context for spread behavior.
When calculators should not drive entries
Calculators summarize prices you type in; they do not judge whether those prices are realistic under liquidity. Use them after your setup logic, not as a substitute for it.