Skip to main content

Celsius to Newton Scale Converter
↔ Convert °N to °C instead

Common Conversions

°C °N
-273.15 -90.14
-100 -33
-40 -13.2
0 0
20 6.6
25 8.25
37 12.21
50 16.5
100 33
200 66
500 165
1000 330

Why this conversion matters in chemistry

Newton's 1701 temperature scale fixed water's freezing at 0 and boiling at 33, a third the span of Celsius. Reading 25 °C off a modern thermometer gives 8.25 °N on Newton's original. The conversion shows up only in historical work — the alchemical-era literature where Newton's linseed-oil thermometer set the calibration before Celsius became standard. Modern chemistry never sees this scale outside that context, but it remains a clean illustration of how arbitrary the choice of fixed points and degree size is in any temperature system.

Formula

°N = °C × 33/100

Worked Examples

0°C = 0°N

Water's freezing point — the shared zero of both scales.

100°C = 33°N

Water's boiling point on the Newton scale — the calibration anchor.

25°C = 8.25°N

Standard lab temperature in Newton-scale degrees.

37°C = 12.21°N

Human body temperature — for any biochemistry assay benchmark on the historical scale.

Frequently Asked Questions

How do I convert Celsius to Newton scale?
Multiply the Celsius value by 33/100 (or 0.33). So 100 °C becomes 33 °N — water's boiling point in Newton's degrees.
What is the Newton scale?
A 1701 temperature scale Isaac Newton proposed: water freezes at 0 °N and boils at 33 °N. The degree is about three times the size of a Celsius degree, and the conversion to Celsius is a simple linear scaling through the shared zero.
Is the Newton scale still used?
No. The scale lives only in historical contexts and the occasional museum exhibit. Modern chemistry uses Celsius and Kelvin almost exclusively, with Fahrenheit surviving in some US-engineering documentation.
Why did Newton pick 33 for boiling water?
Newton calibrated his scale against linseed oil and a set of practical fixed points; 33 fell out of the experimental setup rather than any deep theoretical choice. The arbitrary number is a reminder that temperature-scale numerics are conventions, not natural constants.