Convert Electronvolts to Kilocalories
Instantly convert Electronvolts (eV) to Kilocalories (kcal) with our free online calculator.
Formula: eV to kcal — multiply by 3.8293e-23
Reference Table
| Electronvolts (eV) | Kilocalories (kcal) |
|---|---|
| 1 | 3.829294e-23 |
| 5 | 1.914647e-22 |
| 10 | 3.829294e-22 |
| 25 | 9.573235e-22 |
| 50 | 1.914647e-21 |
| 100 | 3.829294e-21 |
How to Convert Electronvolts to Kilocalories
Formula
To convert Electronvolts (eV) to Kilocalories (kcal): multiply by 3.8293e-23
Step-by-Step
- Start with your value in Electronvolts (eV).
- Multiply by 3.8293e-23 to perform the conversion.
- The result is your value expressed in Kilocalories (kcal).
Conversion Factor
1 eV = 3.829294e-23 kcal
Reverse Factor
1 kcal = 2.611447e+22 eV
Worked Example
Convert 25 Electronvolts to Kilocalories: 25 eV = 9.573235e-22 kcal
About Electronvolt (eV)
A unit of energy equal to the energy gained by an electron accelerating through a one-volt electric field (exactly 1.602176634 × 10⁻¹⁹ joules). The electronvolt is the working unit of atomic, molecular, and particle physics: chemical bonds are a few eV; X-rays carry keV (thousands of eV); nuclear reactions release MeV (millions); particle colliders operate at GeV-TeV (billions-trillions). Almost every modern particle-physics paper reports energies in eV.
About Kilocalorie (kcal)
A unit of energy equal to 1,000 gram-calories (exactly 4,184 joules). This is the unit behind the "Calorie" (capital C) on US food packaging — a 200-Calorie granola bar contains 200 kcal = 200,000 small calories = 836 kJ. Adult daily dietary intake is typically 1,800–2,500 kcal depending on size and activity. Kilocalories are also used for heating-system output in some parts of Europe and for metabolic rate reporting in physiology.
Quick Facts
- 1 Electronvolt equals 3.829294e-23 Kilocalories
- 1 Kilocalorie equals 2.611447e+22 Electronvolts
- Electronvolt is a unit of energy
- Kilocalorie is a unit of energy
- This conversion is commonly used in nutrition, electrical billing, physics, and mechanical engineering
Common Electronvolt to Kilocalorie Conversions
| Electronvolts (eV) | Kilocalories (kcal) |
|---|---|
| 0.01 | 3.829294e-25 |
| 0.1 | 3.829294e-24 |
| 0.25 | 9.573235e-24 |
| 0.5 | 1.914647e-23 |
| 1 | 3.829294e-23 |
| 2 | 7.658588e-23 |
| 3 | 1.148788e-22 |
| 5 | 1.914647e-22 |
| 10 | 3.829294e-22 |
| 15 | 5.743941e-22 |
| 20 | 7.658588e-22 |
| 25 | 9.573235e-22 |
| 50 | 1.914647e-21 |
| 75 | 2.871971e-21 |
| 100 | 3.829294e-21 |
| 250 | 9.573235e-21 |
| 500 | 1.914647e-20 |
| 1000 | 3.829294e-20 |
| 5000 | 1.914647e-19 |
| 10000 | 3.829294e-19 |
Understanding Electronvolts
The Electronvolt (symbol: eV) is a unit of energy. A unit of energy equal to the energy gained by an electron accelerating through a one-volt electric field (exactly 1.602176634 × 10⁻¹⁹ joules). The electronvolt is the working unit of atomic, molecular, and particle physics: chemical bonds are a few eV; X-rays carry keV (thousands of eV); nuclear reactions release MeV (millions); particle colliders operate at GeV-TeV (billions-trillions). Almost every modern particle-physics paper reports energies in eV.
Electronvolts are commonly used in nutrition, electrical billing, physics, and mechanical engineering.
Understanding Kilocalories
The Kilocalorie (symbol: kcal) is a unit of energy. A unit of energy equal to 1,000 gram-calories (exactly 4,184 joules). This is the unit behind the "Calorie" (capital C) on US food packaging — a 200-Calorie granola bar contains 200 kcal = 200,000 small calories = 836 kJ. Adult daily dietary intake is typically 1,800–2,500 kcal depending on size and activity. Kilocalories are also used for heating-system output in some parts of Europe and for metabolic rate reporting in physiology.
Kilocalories are commonly used in nutrition, electrical billing, physics, and mechanical engineering.
Why Convert Electronvolts to Kilocalories?
Converting energy between Electronvolts and Kilocalories is common in physics, nutrition, and engineering. Electricity bills use kilowatt-hours, food labels list calories or kilojoules, and mechanical engineers work with joules and BTUs. Reliable conversion helps professionals and consumers compare energy values across different contexts.
Frequently Asked Questions
How do I convert Electronvolts to Kilocalories?
A unit of energy equal to the energy gained by an electron accelerating through a one-volt electric field (exactly 1. To convert Electronvolts to Kilocalories, multiply by 3.8293e-23. For example, 25 eV equals 9.573235e-22 kcal.
How many Kilocalories are in 1 Electronvolt?
There are 3.829294e-23 Kilocalories in 1 Electronvolt.
How many Electronvolts are in 1 Kilocalorie?
There are 2.611447e+22 Electronvolts in 1 Kilocalorie.
What is the formula for Electronvolt to Kilocalorie conversion?
The formula is: multiply by 3.8293e-23. This means 1 eV = 3.829294e-23 kcal.
Is a Electronvolt bigger than a Kilocalorie?
Yes. One Electronvolt is larger than one Kilocalorie because 1 eV equals 3.829294e-23 kcal, which is less than 1.
When do you need to convert between Electronvolts and Kilocalories?
A unit of energy equal to 1,000 gram-calories (exactly 4,184 joules). Electronvolt and Kilocalorie are both energy units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.