Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Nits to Foot-lamberts
Convert nt to fL instantly, then review the formula, assumptions, and rounding guidance.
Light & sound unitsInstant result
Decimals
Formula result = input × 1 ÷ 3.4262590996. 1 nt = 0.2919 fL
Common examples
One value, several units
Candelas per square metre1 cd/m²
Foot-lamberts0.2919 fL
Stilbs0.0001 sb
Conversion table
| nt | fL |
|---|---|
| 1 nt | 0.2919 fL |
| 2 nt | 0.5837 fL |
| 5 nt | 1.4593 fL |
| 10 nt | 2.9186 fL |
| 25 nt | 7.2966 fL |
| 50 nt | 14.5932 fL |
| 100 nt | 29.1864 fL |
Conversion chart
1 nt0.2919 fL
5 nt1.4593 fL
10 nt2.9186 fL
25 nt7.2966 fL
50 nt14.5932 fL
Worked example
1 nit equals 1 cd/m².
Unit definition
Nits (nt) One nits equals 1 candela per square metre.
Unit history
Nits is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert nt to candela per square metre.
3. Convert the base value to fL and apply your display precision.
Understand the result before using it
Nits to Foot-lamberts converts a value measured in Nits (nt) into the equivalent value in Foot-lamberts (fL). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1 ÷ 3.4262590996
Assumptions
- Nits and Foot-lamberts represent the same luminance quantity.
- The input is expressed in nt; the output is expressed in fL.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 nt = 0.291863507963 fL. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a nt measurement in a document that expects fL.
- Compare a nits value with a value reported in foot-lamberts.
- Check the nt-to-fL arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Decibel sound-pressure level is logarithmic and depends on the stated reference pressure.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Nits to Foot-lamberts?
result = input × 1 ÷ 3.4262590996 Using the displayed relationship, 1 nt equals 0.291863507963 fL.
How many Foot-lamberts are in one Nits?
One Nits is 0.291863507963 Foot-lamberts. The displayed digits may be rounded.
Can I reverse the nt to fL conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts fL back to nt.
Is the Nits to Foot-lamberts result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.