Been trying different futures calculators for position sizing but most seem off when I check against actual P&L.
Anyone found one that actually works properly for crypto futures? Need something that handles funding rates correctly.
Try CoinMargin for accurate calculations it works well.
ByBit’s calculator works great for funding rates if you’re trading there regularly.
For cross-platform trades, I calculate position size manually using my risk percentage and treat funding as an extra cost. Don’t bother trying to get calculators perfect for this.
Most tools are fine for position sizing, but yeah - funding calculations always get messy.
Most calculators screw up funding rates. They treat them like a one-time fee when they’re actually ongoing costs that hit you every 8 hours. Binance’s calculator is solid for their platform since it pulls live rates. For trading across exchanges, make a simple spreadsheet. Track your position size, entry price, current funding rate, and how long you’ve held. Any calculator using daily rates will be wrong since funding compounds every 8 hours. Always test calculators against small live positions first. I’ve seen some off by 15-20% on longer holds.
Most calculators get screwed up by funding rates since they’re always changing. Basic position sizing works fine - just don’t bother with funding predictions.
Treat funding as an extra cost when sizing your positions.