Interactive Tools

Free calculators and simulations — no sign-up, no ads.

Finance Tools

Calculate monthly loan payments and see the full repayment schedule.

Part Payment Calculator

See exactly how a lump-sum part payment reduces your interest and tenure.

Project the future value of your monthly SIP investments with compounding.

Buy Now vs Save First

Compare taking a loan now against saving up first — inflation included.

Science & Exploration

Earth Magnetosphere

Watch solar wind particles deflect off Earth's magnetic field in real-time.

Earth Satellite Simulation

Top-down orbital simulation — add satellites and compare orbits from ISS to GEO.

Earth vs Sun (Scaled)

Set Earth's diameter in real units and see how the Sun scales proportionally.

Solar System Scaled

All eight planets and the Sun drawn to scale — from tiny Mercury to the giant Sun.

Latitude & Longitude Globe

Interactive 3D globe with lat/lon grid. Drag to rotate, scroll to zoom.

Technology

Resistor Color Code Calculator

Decode 4-band resistor color codes instantly. Click the color strips, see the resistor change, get the value.