Table Of Contents
Microseconds to femtosecond Conversion
1 microseconds (μsec) is equal to 1000000000 femtosecond (fsec).
1 μsec = 1000000000 fsec
or
1 fsec = 0.000000001 μsec
Formula
To convert a time from microseconds (μsec) to femtosecond (fsec), multiply the time in microseconds by 1000000000
t(fsec) = t(μsec) × 1000000000
Examples:
Convert 120 microseconds to femtosecond:
t(fsec) = 120μsec × 1000000000 = 120000000000 fsec
Conversion table
| Microseconds (μsec) | Femtosecond (fsec) |
|---|---|
| 1 μsec | 1e9 fsec |
| 2 μsec | 2e9 fsec |
| 3 μsec | 3e9 fsec |
| 5 μsec | 5e9 fsec |
| 10 μsec | 1e10 fsec |
| 15 μsec | 1.5e10 fsec |
| 20 μsec | 2e10 fsec |
| 25 μsec | 2.5e10 fsec |
| 30 μsec | 3e10 fsec |
| 50 μsec | 5e10 fsec |
| 60 μsec | 6e10 fsec |
| 90 μsec | 9e10 fsec |
| 100 μsec | 1e11 fsec |
| 120 μsec | 1.2e11 fsec |
| 250 μsec | 2.5e11 fsec |
| Femtosecond (fsec) | Microseconds (μsec) |
|---|---|
| 1 fsec | 1e-9 μsec |
| 2 fsec | 2e-9 μsec |
| 3 fsec | 3e-9 μsec |
| 5 fsec | 5e-9 μsec |
| 10 fsec | 1e-8 μsec |
| 15 fsec | 1.5e-8 μsec |
| 20 fsec | 2e-8 μsec |
| 25 fsec | 2.5e-8 μsec |
| 30 fsec | 3e-8 μsec |
| 50 fsec | 5e-8 μsec |
| 60 fsec | 6e-8 μsec |
| 90 fsec | 9e-8 μsec |
| 100 fsec | 1e-7 μsec |
| 120 fsec | 1.2e-7 μsec |
| 250 fsec | 2.5e-7 μsec |
Frequently asked questions
How do I convert microseconds to femtosecond?
Multiply the value in microseconds by 1000000000 to get the result in femtosecond. For example, 5 μsec × 1000000000 = 5e9 fsec.
How many femtosecond are in 1 microseconds?
1 microseconds (μsec) is equal to 1e9 femtosecond (fsec).
How do I convert femtosecond back to microseconds?
Use the inverse operation: divide the value in femtosecond by 1000000000 to get the result in microseconds.
How accurate is the microseconds to femtosecond conversion?
The converter multiplies by the conversion factor 1000000000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- The Unified Code for Units of Measure (UCUM), Version 2.2 (2024-06-17)
- ISO 80000-3:2019 — Quantities and units — Part 3: Space and time
- NIST Guide to the SI (SP 811), Chapter 6: Rules and Style Conventions for Printing and Using Units
- CLDR Unit Conversions chart (supplemental data, latest release) - convertibility classes and conversion factors only
