DeFi & Tokenomics Tools

Free online DeFi calculators — impermanent loss, staking APY and vesting math, computed entirely in your browser. Nothing is ever sent to a server.

5 tools

Token Supply

Convert ERC-20 token amounts to the base-unit integer a contract call takes and back, and measure any holding against total supply. BigInt-exact.

Vesting Planner

Turn an allocation, cliff and vesting period into a dated unlock schedule with a cumulative curve and CSV export. Handles both cliff conventions.

Impermanent Loss

Model the impermanent loss from a 50/50 liquidity pool as one token's price moves, entirely in your browser, with dollar amounts, not just percent.

APY/APR Converter

Convert APY to APR or APR to APY across 8 compounding frequencies. Shows the formula, result, and a full comparison table. Includes continuous compounding.

Staking Rewards

Project staked crypto growth over any period at a given APR, with simple or compounding payout. See total rewards, effective APY and a balance timeline.

Why These Tools

Impermanent Loss Calculator and APY/APR Converter are the first two tools in a category built for the maths DeFi users actually need offline. The impermanent loss calculator makes the constant-product AMM formula concrete: enter two token prices and a deposit amount and it shows the loss in both percent and dollars, alongside what fees would need to cover to make providing liquidity worthwhile. The APY/APR converter handles the more fundamental question that every yield-bearing product raises: is this rate before or after compounding, and at what frequency? It converts in both directions across 8 schedules and shows the full formula so the calculation is transparent. Liquidity pool share, staking rewards, and DCA simulation tools are coming next.