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Calories to Quads Converter

Convert calories (thermochemical) (cal) to quads (10¹⁵ Btu) (quad), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
3.96566683139 × 10⁻¹⁸ quad
joules (watt-seconds)
4.184 J
kilojoules
0.004184 kJ
megajoules
4.184 × 10⁻⁶ MJ
gigajoules
4.184 × 10⁻⁹ GJ
kilocalories (food Calories)
0.001 kcal
megacalories
1 × 10⁻⁶ Mcal
watt-hours
0.00116222222222 Wh
kilowatt-hours
1.16222222222 × 10⁻⁶ kWh
megawatt-hours
1.16222222222 × 10⁻⁹ MWh
British thermal units (IT)
0.00396566683139 Btu
million Btu
3.96566683139 × 10⁻⁹ MMBtu
therms (100,000 Btu)
3.96566683139 × 10⁻⁸ thm
electronvolts
2.61144739675 × 10¹⁹ eV
kiloelectronvolts
2.61144739675 × 10¹⁶ keV
megaelectronvolts
26,114,473,967,500 MeV

1 cal = 3.96566683139 × 10⁻¹⁸ quad

Show the working
  1. 1 cal = 3.96566683139e-18 quad
  2. 1 × 3.96566683139e-18 = 3.96566683139e-18 quad

How to convert calories to quads

1 cal = 3.96566683139 × 10⁻¹⁸ quad, so multiply by 3.96566683139 to go from calories (thermochemical) to quads (10¹⁵ Btu). Going the other way, 1 quad = 2.52164400722 × 10¹⁷ cal.

quad = cal × 3.96566683139
cal = quad × 2.52164400722

Worked example:

1 cal = 3.96566683139e-18 quad
5 × 3.96566683139e-18 = 1.9828334157e-17 quad

Calories to quads table

CaloriesQuads
1 cal3.96566683139 × 10⁻¹⁸ quad
2 cal7.93133366278 × 10⁻¹⁸ quad
3 cal1.18970004942 × 10⁻¹⁷ quad
4 cal1.58626673256 × 10⁻¹⁷ quad
5 cal1.9828334157 × 10⁻¹⁷ quad
6 cal2.37940009883 × 10⁻¹⁷ quad
7 cal2.77596678197 × 10⁻¹⁷ quad
8 cal3.17253346511 × 10⁻¹⁷ quad
9 cal3.56910014825 × 10⁻¹⁷ quad
10 cal3.96566683139 × 10⁻¹⁷ quad
15 cal5.94850024709 × 10⁻¹⁷ quad
20 cal7.93133366278 × 10⁻¹⁷ quad
25 cal9.91416707848 × 10⁻¹⁷ quad
30 cal1.18970004942 × 10⁻¹⁶ quad
40 cal1.58626673256 × 10⁻¹⁶ quad
50 cal1.9828334157 × 10⁻¹⁶ quad
75 cal2.97425012354 × 10⁻¹⁶ quad
100 cal3.96566683139 × 10⁻¹⁶ quad
250 cal9.91416707848 × 10⁻¹⁶ quad
500 cal1.9828334157 × 10⁻¹⁵ quad
1000 cal3.96566683139 × 10⁻¹⁵ quad

About the units

Calories (cal)
Calories (thermochemical), a specialised unit. The thermochemical calorie, 4.184 J, used on US food labels as 1 Calorie = 1 kilocalorie. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.
Quads (quad)
Quads (10¹⁵ Btu), a US customary unit. Definition: NIST SP 811 Appendix B.8, factors for units listed alphabetically.

Formula version 0.1.0Reviewed