45 Hartree to Calorie (IT)
Quick answer
45 Hartree (Eh) equals
4.685882e-17 cal (IT)
To convert 45 Hartrees to Calorie (IT)s, multiply by 1.041307e-18. Therefore, 45 Hartree (Eh) equals 4.685882e-17 Calorie (IT) (cal (IT)).
Formula: cal (IT) = Eh × 1.041307e-18. Calculation: 45 × 1.041307e-18 = 4.685882e-17 cal (IT).
Convert Hartree (Eh) to Calorie (IT) (cal (IT)) online with our free unit converter. In energy, 1 Eh = 1.041307e-18 cal (IT). Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Hartree to Calorie (IT)
- Step 1 — start with the formula. cal (IT) = Eh × 1.041307e-18
- Step 2 — substitute your figure. 45 Eh × 1.041307e-18
- Step 3 — read the result. 45 Eh = 4.685882e-17 cal (IT)
- Step 4 — check it in reverse. Eh = cal (IT) × 9.603315e+17 returns 45 Eh, which matches the figure you started with.
Energy Converter
27 units available
45 Eh = 4.685882e-17 cal (IT)
Formula:
cal (IT) = Eh × 1.041307e-18With your value: 45 Eh = 4.685882e-17 cal (IT)
How big is that?
Everyday references on a logarithmic scale, all expressed in hartree so you can sanity-check the result.
Other Hartree to Calorie (IT) conversions
Hartree to Calorie (IT) Conversion Table
| Hartree (Eh) | Calorie (IT) (cal (IT)) |
|---|---|
| 0.5 | 5.206536e-19 |
| 1 | 1.041307e-18 |
| 2 | 2.082614e-18 |
| 5 | 5.206536e-18 |
| 10 | 1.041307e-17 |
| 15 | 1.561961e-17 |
| 20 | 2.082614e-17 |
| 25 | 2.603268e-17 |
| 50 | 5.206536e-17 |
| 100 | 1.041307e-16 |
| 250 | 2.603268e-16 |
| 500 | 5.206536e-16 |
| 1000 | 1.041307e-15 |
Calorie (IT) to Hartree Conversion Table
| Calorie (IT) (cal (IT)) | Hartree (Eh) |
|---|---|
| 0.5 | 4.801657e+17 |
| 1 | 9.603315e+17 |
| 2 | 1.920663e+18 |
| 5 | 4.801657e+18 |
| 10 | 9.603315e+18 |
| 15 | 1.440497e+19 |
| 20 | 1.920663e+19 |
| 25 | 2.400829e+19 |
| 50 | 4.801657e+19 |
| 100 | 9.603315e+19 |
| 250 | 2.400829e+20 |
| 500 | 4.801657e+20 |
| 1000 | 9.603315e+20 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Hartree (Eh)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Calorie (IT) (cal (IT))
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Hartree to Calorie (IT)
To convert from Hartree (Eh) to Calorie (IT) (cal (IT)), multiply the value by 1.041307e-18.
Formula: cal (IT) = Eh × 1.041307e-18
Reverse: Eh = cal (IT) × 9.603315e+17
Step-by-Step Example
- Start with your value in Hartree. For example: 5 Eh
- Multiply by the conversion factor: 5 x 1.041307e-18
- The result is: 5.206536e-18 cal (IT)
Hartree and Calorie (IT) Relationship
This calculation facilitates standardized conversion between recognized units of energy. Since 1 Hartree represents a fraction of a Calorie (IT) (1 Calorie (IT) ≈ 9.603e+17 Hartrees), the Calorie (IT) is the larger measurement interval. Understanding the relationship between Hartree and Calorie (IT) is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Hartree
The Hartree (symbol: Eh) is a recognized unit in the Standard measurement framework, utilized within energy applications for precision and standardized data representation.
Common uses of Hartree: energy calculations, engineering and science, education.
About Calorie (IT)
The Calorie (IT) (symbol: cal (IT)) is a recognized unit in the Standard measurement framework, utilized within energy applications for precision and standardized data representation.
Common uses of Calorie (IT): energy calculations, engineering and science, education.
Frequently Asked Questions
- What is 45 Hartree in Calorie (IT)?
- 45 Hartree equals 4.685882e-17 Calorie (IT).
- How many Calorie (IT)s are in 1 Hartree?
- There are exactly 1.041307e-18 Calorie (IT)s in 1 Hartree. This means the conversion factor from Hartree to Calorie (IT) is 1.041307e-18.
- What is the formula to convert Hartree to Calorie (IT)?
- The formula to convert Hartree to Calorie (IT) is: cal (IT) = Eh × 1.041307e-18. For example, to convert 10 Hartrees to Calorie (IT)s, you would multiply 10 by 1.041307e-18.
- What is a Hartree?
- The Hartree (symbol: Eh) is a recognized unit in the Standard measurement framework, utilized within energy applications for precision and standardized data representation.
- What is a Calorie (IT)?
- The Calorie (IT) (symbol: cal (IT)) is a recognized unit in the Standard measurement framework, utilized within energy applications for precision and standardized data representation.
- What are the common uses of Hartree?
- The Hartree is commonly used in energy calculations, engineering and science, education.
Related Energy Conversions
Cite this page
UnitConvertLab. (2026). 45 Hartree to Calorie (IT). UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/45-hartree-to-calorie_it