PerpTiers is built by a trader who runs automated strategies on perpetual futures. Building that system meant handling exchange leverage tiers, maximum position values and order size rules in code, and it showed how far the usual online calculators can be from what the exchange actually does.
These calculators use the same rules. Every contract's margin tiers, price steps and quantity steps come from each exchange's API and are refreshed on a schedule, and each exchange's liquidation formula is taken from its own documentation and checked against its published examples where it gives one. The time of the last update is at the bottom of every page.
How the calculations work
Each calculator page shows its formulas and a worked example you can check by hand. All calculations run in your browser; nothing you type is sent to a server.
Independence
PerpTiers is not affiliated with, endorsed by or sponsored by any exchange. Some pages contain affiliate links, which are marked as such.
Contact
Found a number that doesn't match the exchange? Email z1210211755@gmail.com with the contract and your inputs.