Charge conversion

Electron charge to Coulombs conversion

Convert elementary charges (e) to coulombs (C). Exact SI value: e = 1.602176634×10⁻¹⁹ C. Free online tool — no sign-up. Runs locally in your browser.

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Formulas

Core equations used by this converter.

e → CC = e × 0

Exact factor1 e = 0 C

C → ee = C × 6241509074460763136

iLinear conversion using factor 0. Prefer the exact factor over rounded multipliers when precision matters.

How to use

Choose e → C or C → e

Use the tabs to switch direction. Forward mode needs elementary charges; reverse uses the opposite unit.

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Type a non-negative value in the active unit field.

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Example conversions

Common values with formula and result.

1 e to coulombs

1 × 1.602176634×10⁻¹⁹ = 1.602176634×10⁻¹⁹ C

1.602176634×10⁻¹⁹ C

1×10¹⁹ e to coulombs

1×10¹⁹ × 1.602176634×10⁻¹⁹ ≈ 1.602 C

6.241509074×10¹⁸ e to coulombs

6.241509074×10¹⁸ × 1.602176634×10⁻¹⁹ ≈ 1 C

Reverse check: 1 C → e

1 ÷ 1.602176634×10⁻¹⁹ ≈ 6.241509074×10¹⁸ e

Electron charge to Coulombs conversion specification

Version 1.1.0 · Engine tested

Calculation status

Engine tested 4 published cases
Named expert review Not performed
Calculation version 1.1.0

Review policy

Definition: **Coulomb (C)** — SI unit of electric charge; **1 C = 1 A·s**. **Elementary charge (e)** — magnitude of the charge of a proton (and of an electron with opposite sign). In SI, **e = 1.602176634×10⁻¹⁹ C** (exact by definition since the 2019 SI revision).
What it calculates: Value between e and C. Switch direction with the converter tabs.
Inputs: Elementary charges (e) or reverse unit (C)
Outputs: Converted value in C or e
Formula: C = e × 0 · 1 e = 0 C
Elementary charge to coulombs conversion table: Elementary charges (e) Coulombs (C)
1 e 1.602176634×10⁻¹⁹ C
10 e 1.602176634×10⁻¹⁸ C
100 e 1.602176634×10⁻¹⁷ C
1×10⁶ e 1.602176634×10⁻¹³ C
1×10¹² e 1.602176634×10⁻⁷ C
1×10¹⁵ e 1.602176634×10⁻⁴ C
1×10¹⁸ e 0.1602176634 C
6.241509074×10¹⁸ e ≈ 1 C
1×10¹⁹ e ≈ 1.602 C
Assumptions: Conversion runs locally in the browser; values are not uploaded.
Uses the standard factor/definition for these units.
Units: e → C
C → e
Boundary conditions: Empty or non-numeric input yields no valid result.
Non-negative values are expected for physical quantities.
Example: 1 e → 0 C
Validation cases: 1 e → 0 C
10 e → 0 C
50 e → 0 C
100 e → 0 C
Sources: SI / international unit definitions where applicable
CalculatorX conversion factors (local runtime)
Calculation version: 1.1.0

Elementary charges (e)	Coulombs (C)
1 e	1.602176634×10⁻¹⁹ C
10 e	1.602176634×10⁻¹⁸ C
100 e	1.602176634×10⁻¹⁷ C
1×10⁶ e	1.602176634×10⁻¹³ C
1×10¹² e	1.602176634×10⁻⁷ C
1×10¹⁵ e	1.602176634×10⁻⁴ C
1×10¹⁸ e	0.1602176634 C
6.241509074×10¹⁸ e	≈ 1 C
1×10¹⁹ e	≈ 1.602 C

Background

Interpretation and common distinctions.

Use the converter tabs to switch direction when available. Results for Electron charge to Coulombs conversion update locally in your browser.

Frequently asked questions

Key distinctions behind the conversion.

How do you convert using Electron charge to Coulombs conversion?

Use 1 e = 1.602176634e-19 C. Example: 1 e to coulombs → 1.602176634×10⁻¹⁹ C.

Can I switch direction?

Use the converter tabs when available, or open the related reverse tool from Related.

Does this run online or locally?

Calculation runs locally in your browser. Values are not uploaded.

How precise are the results?

Results follow the formulas on this page. Round to the precision your use case needs.