Convert Hours to Femtoseconds
Convert Hours (h) to Femtoseconds (fs) instantly and accurately.
Conversion Formula
fs = h × 3.600000000e+18
About Hours
An hour (h) = exactly 3,600 s. The 24-hour day traces to ancient Egypt (10 daylight hours + 2 twilight + 12 night star-rise periods). Time zones are integer or half-hour UTC offsets (exceptions: India +5:30, Nepal +5:45). The kilowatt-hour = 3,600,000 J; Tc-99m half-life = 6.0067 h. Drug dosing and pharmacokinetics are expressed in hours. 1 h = 3,600 s = 60 min = 1/24 day.
About Femtoseconds
A femtosecond (fs) = 10⁻¹⁵ s - the timescale of molecular vibrations and chemical reactions. Bond stretching: 10-200 fs; bending: 50-500 fs. Ahmed Zewail won the 1999 Nobel Prize in Chemistry for femtochemistry, capturing transition states in real time. Ti:sapphire lasers produce 10-100 fs pulses; LASIK uses 10-100 fs for precise corneal cuts. At 800 nm, one optical cycle = 2.67 fs. Light travels 300 nm in 1 fs. 1 fs = 10⁻¹⁵ s.
Quick Reference Table
| Hours (h) | Femtoseconds (fs) |
|---|---|
| 1 h | 3.6 × 1018 fs |
| 2 h | 7.2 × 1018 fs |
| 5 h | 1.8 × 1019 fs |
| 10 h | 3.6 × 1019 fs |
| 25 h | 9 × 1019 fs |
| 50 h | 1.8 × 1020 fs |
| 100 h | 3.6 × 1020 fs |