Gravitational Time Dilation Calculator
Find how gravity slows time near a massive body.
Clocks run slower deeper in a gravitational field — a prediction of general relativity.
The math behind it
The time runs at a rate √(1 − 2GM/(rc²)) compared to a distant observer. Stronger gravity slows time more.
Worked example
At the Sun's surface → clocks run about 2.1 ppm slower.
FAQ
Does GPS account for this?
Yes — satellite clocks run faster in weaker gravity and are corrected.