FireBasis / tools
Investment Calculators
Compare calculators for FIRE planning, compound growth, retirement contributions, dollar-cost averaging, rental property screening, and investment fee impact. Start with the decision you want to model, then adjust the assumptions in the calculator.
Investment Calculators and Planning Tools
7 toolsCalculator
FIRE Calculator
Find a target portfolio and timeline from your spending assumptions.
Best for Plan independenceOpen toolCalculator
Compound Interest Calculator
See how starting money and regular contributions grow over time.
Best for Build a growth baselineOpen toolCalculator
Retirement Savings Calculator
Model contributions and an employer match for a long-term plan.
Best for Plan workplace savingsOpen toolCalculator
Dollar Cost Averaging Calculator
Compare a steady investing plan with a lump-sum scenario.
Best for Compare investing approachesOpen toolCalculator
Rental Property Calculator
Review cash flow, cap rate, and return assumptions.
Best for Screen a propertyOpen toolCalculator
Investment Fee Calculator
Make the long-term cost of fees visible in dollars.
Best for Understand fee dragOpen toolCalculator
Portfolio Rebalancing Calculator
Calculate allocation drift and modeled buys, sells, or new-cash purchases.
Best for Restore target weightsOpen tool