Set it, contribute, don’t blink: how patience beats timing games
Learn concepts, assumptions, and techniques behind our calculators.
Advanced, realistic calculators
Advanced financial calculators for real‑world decisions
We model the details others skip—taxes, fees, timing, inflation, cash flows, financing, and edge cases—so everyday people can explore scenarios, compare trade‑offs, and act with confidence. Transparent assumptions. Clear visuals. Realistic results.
Live demo
Realistic projection example
Final value
$184,920
Total contributions
$50,000
Numbers are illustrative; use the calculator for your scenario.
Clear visualizations
Understand outcomes at a glance with charts, tables, and flow diagrams.
Sound assumptions
Realistic defaults and transparent modeling—no black boxes.
Fast and responsive
Instant results as you type, with smooth interactions on any device.
Spotlight
Hand-picked tools to tryCalculators
Explore our growing set of powerful tools.
8 calculators shown
Recent articles
View allMake smarter decisions with realistic calculators
Explore scenarios, compare trade‑offs, and act with confidence—using transparent assumptions, clear visuals, and details that matter.