Convert Calories to Electronvolts
Instantly convert Calories (cal) to Electronvolts (eV) with our free online calculator.
Formula: cal to eV — multiply by 2.6114e+19
Reference Table
| Calories (cal) | Electronvolts (eV) |
|---|---|
| 1 | 2.611447e+19 |
| 5 | 1.305724e+20 |
| 10 | 2.611447e+20 |
| 25 | 6.528618e+20 |
| 50 | 1.305724e+21 |
| 100 | 2.611447e+21 |
How to Convert Calories to Electronvolts
Formula
To convert Calories (cal) to Electronvolts (eV): multiply by 2.6114e+19
Step-by-Step
- Start with your value in Calories (cal).
- Multiply by 2.6114e+19 to perform the conversion.
- The result is your value expressed in Electronvolts (eV).
Conversion Factor
1 cal = 2.611447e+19 eV
Reverse Factor
1 eV = 3.829294e-20 cal
Worked Example
Convert 25 Calories to Electronvolts: 25 cal = 6.528618e+20 eV
About Calorie (cal)
The "small" gram-calorie, equal to the energy needed to raise one gram of water by 1°C (exactly 4.184 joules). This is the scientific calorie used in chemistry and physics literature — not the larger Calorie (Cal, capital C) used on US food labels, which is actually a kilocalorie (1 kcal = 1,000 gram-calories). This ambiguity between "cal" and "Cal" is a notorious source of confusion when comparing nutrition data to scientific sources.
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.
Quick Facts
- 1 Calorie equals 2.611447e+19 Electronvolts
- 1 Electronvolt equals 3.829294e-20 Calories
- Calorie is a unit of energy
- Electronvolt is a unit of energy
- This conversion is commonly used in nutrition, electrical billing, physics, and mechanical engineering
Common Calorie to Electronvolt Conversions
| Calories (cal) | Electronvolts (eV) |
|---|---|
| 0.01 | 2.611447e+17 |
| 0.1 | 2.611447e+18 |
| 0.25 | 6.528618e+18 |
| 0.5 | 1.305724e+19 |
| 1 | 2.611447e+19 |
| 2 | 5.222895e+19 |
| 3 | 7.834342e+19 |
| 5 | 1.305724e+20 |
| 10 | 2.611447e+20 |
| 15 | 3.917171e+20 |
| 20 | 5.222895e+20 |
| 25 | 6.528618e+20 |
| 50 | 1.305724e+21 |
| 75 | 1.958586e+21 |
| 100 | 2.611447e+21 |
| 250 | 6.528618e+21 |
| 500 | 1.305724e+22 |
| 1000 | 2.611447e+22 |
| 5000 | 1.305724e+23 |
| 10000 | 2.611447e+23 |
Understanding Calories
The Calorie (symbol: cal) is a unit of energy. The "small" gram-calorie, equal to the energy needed to raise one gram of water by 1°C (exactly 4.184 joules). This is the scientific calorie used in chemistry and physics literature — not the larger Calorie (Cal, capital C) used on US food labels, which is actually a kilocalorie (1 kcal = 1,000 gram-calories). This ambiguity between "cal" and "Cal" is a notorious source of confusion when comparing nutrition data to scientific sources.
Calories are commonly used in nutrition, electrical billing, physics, and mechanical engineering.
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.
Why Convert Calories to Electronvolts?
Converting energy between Calories and Electronvolts 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 Calories to Electronvolts?
The "small" gram-calorie, equal to the energy needed to raise one gram of water by 1°C (exactly 4. To convert Calories to Electronvolts, multiply by 2.6114e+19. For example, 25 cal equals 6.528618e+20 eV.
How many Electronvolts are in 1 Calorie?
There are 2.611447e+19 Electronvolts in 1 Calorie.
How many Calories are in 1 Electronvolt?
There are 3.829294e-20 Calories in 1 Electronvolt.
What is the formula for Calorie to Electronvolt conversion?
The formula is: multiply by 2.6114e+19. This means 1 cal = 2.611447e+19 eV.
Is a Calorie bigger than a Electronvolt?
No. One Calorie is smaller than one Electronvolt because 1 cal equals 2.611447e+19 eV, which is greater than 1.
When do you need to convert between Calories and Electronvolts?
A unit of energy equal to the energy gained by an electron accelerating through a one-volt electric field (exactly 1. Calorie and Electronvolt 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.