Enter the electric charge and electric field strength into the calculator to determine the force in Newtons. This calculator can also evaluate any of the variables given the others are known.

Coulombs to Newtons Calculator
Main tab: enter charge and get force at common electric fields, then fine-tune the field in the results. Additional tabs cover Coulomb's law and N/C to V/m conversion.
Coulombs to Newtons
Coulomb's Law
N/C to V/m
This main tab uses F = qE. Enter charge, click Calculate, and the results will show force across common electric fields plus a live adjustable field control.
This tab uses Coulomb's law to calculate the electrostatic force magnitude between two point charges.
1 N/C is exactly equal to 1 V/m, so this tab is useful for field-unit conversions and scaled equivalents.

Coulombs To Newtons Formula

The following formula is used to calculate the force in Newtons from the electric charge in Coulombs. 

F = Q * E

Variables:

  • F is the force in Newtons (N)
  • Q is the electric charge in Coulombs (C)
  • E is the electric field strength (N/C)

To calculate the force in Newtons, multiply the electric charge in Coulombs by the electric field strength. This conversion is based on Coulomb's Law, which states that the force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. However, in this context, we are considering a charge in an electric field, so the force is simply the product of the charge and the field strength.

Coulombs to Newtons Conversion Table (Assumes uniform electric field E = 1.00 N/C)
Coulombs (C) Newtons (N)
1×10⁻¹²1×10⁻¹²
5×10⁻¹²5×10⁻¹²
1×10⁻¹¹1×10⁻¹¹
5×10⁻¹¹5×10⁻¹¹
1×10⁻¹⁰1×10⁻¹⁰
5×10⁻¹⁰5×10⁻¹⁰
1×10⁻⁹1×10⁻⁹
2×10⁻⁹2×10⁻⁹
5×10⁻⁹5×10⁻⁹
1×10⁻⁸1×10⁻⁸
5×10⁻⁸5×10⁻⁸
1×10⁻⁷1×10⁻⁷
5×10⁻⁷5×10⁻⁷
1×10⁻⁶1×10⁻⁶
2×10⁻⁶2×10⁻⁶
5×10⁻⁶5×10⁻⁶
1×10⁻⁵1×10⁻⁵
5×10⁻⁵5×10⁻⁵
1×10⁻⁴1×10⁻⁴
1×10⁻³1×10⁻³
* Assumes E = 1.00 N/C in F = q × E. To adjust for a different electric field, multiply the Newtons column by your E (in N/C).

What is a Coulombs To Newtons?

Coulombs to Newtons is a conversion process used in physics to change the measurement of electric charge (Coulombs) to force (Newtons). This is typically used in the context of electric fields, where the force exerted on a charged particle is calculated. The conversion involves multiplying the charge by the electric field strength, as per Coulomb's Law. It's important to note that this conversion is only applicable when dealing with electric charges and forces.

How to Calculate Coulombs To Newtons?

The following steps outline how to calculate the Coulombs To Newtons using the formula: F = Q * E.

  1. First, determine the electric charge in Coulombs (Q).
  2. Next, determine the electric field strength (E).
  3. Next, use the formula F = Q * E to calculate the force in Newtons (F).
  4. Finally, calculate the Coulombs To Newtons.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

electric charge in Coulombs (Q) = 5

electric field strength (E) = 10