Use this horology calculation to interpret a stated watch, clock, timing-machine, water-resistance, alarm, or historical respiratory-timing quantity under its defined convention.

Strike Count

Required number input.

Joules Per Strike (J)

Required number input.

Mechanical energy spent on strikes from count and energy used per strike. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Total Joules (J)

The resulting total joules returned as a number.

• Mechanical-watch amplitude and beat measurements depend on lift angle, position, state of wind, movement condition, instrument setup, and elapsed sampling. ATM markings are test-pressure classifications rather than literal safe diving depths.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Confirm movement specifications and measure in multiple positions and power states; follow the manufacturer's water-resistance guidance and obtain pressure testing after case service.

• Moonphase Gear Ratio

  Display-cycle days from moon-disc tooth count and tooth advances per day.

• Repeater Quarter Strikes

  Completed quarter-hour indications on a minute repeater from the current minute 0–59.

• Synodic Cycle Display

  Moon-phase display cycle in days from gear tooth count and advances per calendar day.