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Tools that do the math you shouldn't be doing in your head

Three things live on this page: a position-size and risk/reward calculator, a live session clock so you know when liquidity actually shows up, and a pre-session checklist that remembers where you left off.

Jason Parker, founder of TradeScalping.com, pointing down at the stop-on-entry rule
“Stops go in the moment you're filled, not after. The calculator and the checklist on this page exist to make that rule easier to keep, not to replace it.”
Jason Parker · Founder, TradeScalping.com

Position Size & Risk/Reward Calculator

Everything here runs in your browser. Nothing is saved or sent anywhere.

Dollar risk this trade-
Position size-
Position value-
Stop distance-
Risk / reward-
Potential profit at target-

Position value shown in red means the trade would use more than 4x your account as buying power. That's a flag to check your leverage, not a hard rule.

Live Session Clock

Four sessions, updated from your device clock. The London/New York overlap is historically where volume and volatility both peak. It's the window most day and swing scalpers should be paying the closest attention to.

Sydney

22:00–07:00 UTC

Tokyo

00:00–09:00 UTC

London

08:00–17:00 UTC

New York

13:00–22:00 UTC
Reading current time…