Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Relativity
Time Dilation Calculator
Compute the time experienced by a stationary observer for a moving clock that ticks through a given proper time, using special relativity. Returns the dilated time interval in the same units as the proper-time input.
Fill in the required fields to see your result.
Relativity
Gravitational Time Dilation Calculator
Calculates how gravity slows time near massive objects using Einstein's general relativity. Use it when comparing elapsed time at different distances from a planet, star, or black hole.
Fill in the required fields to see your result.
Key differences
| Time Dilation Calculator | Gravitational Time Dilation Calculator | |
|---|---|---|
| Category | Relativity | Relativity |
| Inputs required | 2 | 3 |
| Result | Dilated Time (time units) | Time at Infinity (hours) |
| What it does | Compute the time experienced by a stationary observer for a moving clock that ticks through a given proper time, using special relativity. Returns the dilated time interval in the same units as the proper-time input. | Calculates how gravity slows time near massive objects using Einstein's general relativity. Use it when comparing elapsed time at different distances from a planet, star, or black hole. |