Brokers quote in different tiers
Some brokers default to standard lots, some to micro, some let you choose. Putting in 1.0 when the platform expects mini is a 90 % oversize. Always confirm what the order ticket is actually about to send.
Free trader tools
Lot Size Calculator
Drop in your position size in units and the calculator returns the equivalent in standard, mini, and micro lots. Useful when your broker quotes one and your strategy thinks in another, or when you're translating a position-size output into something you can actually order.
Lot conversions are trivial — until you size a 25k position by hand and realise your broker only accepts mini lots. Get the conversion wrong by a factor of ten and the trade sizes itself ten times bigger than planned.
MindTrajour_LotSize
When the lot tier actually matters
Three reads to take seriously when bouncing between trading platforms.
Pip value scales linearly with lot size
A 1 standard lot trade in a USD-quoted major is roughly $10 / pip. A 0.1 mini lot is $0.10 / pip. The lot tier you trade is the lever that turns the same setup into a sleep-well-at-night trade or a heart-attack one.
Sizing lives outside the lot tier
The lot size calculator doesn't know your account balance or your risk budget — it only converts between tiers. Pair it with the position size calculator for the full sizing decision; this tool just makes sure you can actually place the order.
Lots are clerical. Sizing is the math
Sizing isn't where edge lives. Logging is.
MindTrajour ties your sizing decisions — including which lot tier you traded — to the actual outcomes, so the next sizing call is informed instead of guessed.
No credit card required • Cancel anytime
Keep stacking your edge
Other calculators traders pair with this one.
risk
Position Size Calculator
Punch in your equity, the percent you want to risk, your stop distance, and the pip value. We give you back the lot size that actually keeps you alive — not the one your gut wants you to take.
Open toolrisk
Margin Calculator
Tell us the position size you want to take and the leverage your broker offers. We hand back the deposit your broker locks (required margin), and — if you provide your account balance — the free margin you have left and the utilisation as a percent of equity.
Open toolrisk
Risk/Reward Calculator
Pick a direction, drop in your entry, stop, and target. We hand back the dollar risk, the dollar reward, the R-multiple, and — the number every trader should know cold — the win rate you need to break even at this risk/reward.
Open toolFrequently asked questions
Everything you need to know before sizing your next trade.