How Free Pip & Swap Calculators on Mobile Can Mislead You
By Sofia Reyes
Free pip and swap calculators in app stores use standardised assumptions: 100,000-unit lots, fixed pip values, and overnight rates sourced from generic benchmarks. Your broker uses different lot sizes, variable spreads, and rollover rates tied to interbank rates.
The error compounds when you trade exotic pairs or instruments with non-standard tick sizes. A CFD on an index has a completely different pip value calculation than a forex pair, and most free apps don't account for this.
Always use your broker's own calculator — or build your own in a spreadsheet using your account currency, the exact lot size, and the specific overnight swap rate from your platform's specification page.
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